General technical data Part 2

Motor connection and connenction boxes

Connection, circuit and connection boxes

Location of the connection box

The connection box of the motor can be mounted in four different locations or positions. The position of the connection box must always be viewed from the drive end (DE). The standard position of the connection box is on top, with the exception of non-standard motors in which case the standard position of the connection box is on the right-hand side.
Connection box on right-hand side – Order codeK09
Connection box on left-hand side – Order codeK10

If rotation of the connection box is possible later for motors that are supplied as standard with cast feet, it is recommended that the version “Connection box on top, feet screwed on” is recommended.
Order codeK11

The number of winding ends depends on the winding design. Three-phase motors are connected to the three phase conductors L1, L2 and L3 of a three-phase system. The rated voltage of the motor in the running connection must match the phase conductor voltages of the network.

When the three phases are operating in a time sequence and are connected to the terminals of the motor in alphabetical order U1, V1 and W1, clockwise rotation is established as viewed from the motor shaft. The direction of rotation of the motor can be reversed if two connecting leads are interchanged.

Labeled terminals are provided to connect the protective conductor.
A protective earth terminal is provided in the connection box for earthing. An earth terminal is located on the outside of the motor housing (special version in the case of 1LA5, 1LA6, 1LA7 and 1LA9 motors. Order codeL13).

If a brake control system or thermal protection is installed, the connections will also be in the connection box.
The motors are suitable for direct connection to the line supply.

Design of the connection box

Connection boxes for motors to (E)Exn (Zone 2) type of protection and for protection against dust explosions (Zone 21) differ from the basic version. For dust explosion protection (Zone 22), the connection boxes of the basic version are used.

For 1LG4 and 1LG6 motors, frame sizes 180 to 225 and 1MA6 motors frame sizes 180 to 200, 1MJ6 frame sizes 71 to 160 M and frame sizes 180 to 200 L, a connection box is available in cast iron.
Order codeK15
For 1LA6 and 1MA6 frame size 100 – 160, 1MJ6 frame size
160 L and 1MJ7, 1MA6 frame size 225 – 315 standard version.
Not possible for 1LA7 and 1MA7.

For 1MJ motors:
The connection boxes are designed to EEx e type of protection. The ends of the windings for motors up to frame size 160 are routed through a shared explosion-proof leadthrough into the connection box; for frame size 180 and above, they are routed through single leadthroughs.

For 1MJ motors, an explosion-proof connection box with
EEx d II C type of protection is available.

Fur die 1MJ-Motoren ist ein druckfester Anschlusskasten der Zundschutzart EEx d II C entspricht erhaltlich.
Order codeK53

For motor series 1LA8, 1PQ8 and 1LL8, the ends of the windings are routed through single leadthroughs into the connection box.

The number of terminals and the size of the connection box is designed for standard requirements. For special requirements or if the customer requires a larger connection box, the connection box for the next larger frame size can be supplied.

For all motors except for non-standard motors, 1MJ6 and 1MJ7 motors: Next larger connection box
Order codeL00

For non-standard motors (motor series 1LA8, 1PQ8 and 1LL8) Next larger 1XB1 621 connection box
Order codeM58 Next larger 1XB1 631 connection box
Order codeL00

Detailed assignment of connection boxes, see page 1/42.

If the necessary installation angle of the motor would cause machine components to collide with the connection box, the connection box can be moved from the drive end (DE) to the non-drive end (NDE). Order code M64 Not possible for explosion-proof motors.

Motor connection

Line feeder cables

The line feeder cables must be dimensioned acc. to DIN VDE 0298. The number of required feeder cables, if necessary in parallel, is defined by:

The max. cable cross-section which can be connected
The cable type
Routing
Ambient temperature and the corresponding maximum current in accordance with DIN VDE 0298

Cable entry on connection box

Unless stated otherwise, the cable entry is located in the standard position as shown in the illustration below.

The connection box can also be rotated such that the cable entry is located

Towards the drive end (DE) (rotation of connection box by 90°, entry from DE)
Order codeK83
Towards the non-drive end (NDE) (rotation of connection box by 90°, entry from NDE)
Order codeK84

With optionsK83andK84, 1LA7 motors of frame sizes 100 to 160 require an additional connection box upper section. This measure results in increased height of the connection box. The dimension AD increases by approx. 30 mm, dimension AF changes depending on the frame size by between 45 and 47 mm. For the precise values of AD and AF, see “Dimension drawings” in the corresponding sections of the catalogue.

If the cable entry is rotated by 180°, special measures are required for 1LA7 and 1LA5 motors of frame sizes 63 to 90 as well as 180 to 225 (without a change in dimensions). (Rotation of the connection box by 180°)
Order codeK85

From frame size 100 to 160, the break-outs in the connection box can be used.
The dimensions of the connection box are listed in the relevant sections of the catalogue in accordance with the frame size and the “Dimension drawings”.

If the position of the connection box (connection box RHS, LHS or above) is changed, the position of the cable entry must be checked and, if necessary, it can be ordered with the corresponding order codes (K83;K84;K85).

Ordering example

Connection box RHS (Order codeK09):
If no other order code is specified: Cable entry from below the motor.
With additional order codeK85:
Cable entry from drive end (DE)

For cable entry to a standard connection box, acable gland can be ordered for motor connection.
Cable entry, standard configuration
Order codeK54

For cable entry to a connection box with the options of motor protection or anti-condensation heating,two cable glands will be supplied.
Cable entry, maximum configuration
Order codeK55

For non-standard motors (motor series 1LA8, 1PQ8 and 1LL8), the cable entry can be implemented in accordance with DIN 89280 for the maximum possible configuration of cable entries in the connection box.
Order codeK57

A two-part plate on the connection box can be supplied if required.
Order codeK06

For special requirements for which the standard holes for the cable entries are inadequate, too large or when the routing must be implemented differently, an undrilled entry plate can be supplied to allow holes to be drilled as required on assembly.
Order codeL01

Protruding cable ends

For confined spaces, protruding cable ends can be ordered, without a connection box with cover plate.

For protruding cable ends for smoke extraction motors, see the “Smoke extraction motors” section of the catalogue.

The following lengths of protruding cables can already be ordered using order codes on request:

3 cables protruding, 0.5 m long
Order codeL44
3 cables protruding, 1.5 m long
Order codeL45
6 cables protruding, 0.5 m long
Order codeL47
6 cables protruding, 1.5 m long
Order codeL48
6 cables protruding, 3.0 m long
Order codeL49

It is also possible to rotate the position of the three protruding cables:

Cable connection on right side, as viewed from drive end (DE)
Order codeL51
Cable connection on left side, as viewed from non-drive end (NDE)
Order codeL52

For 1LG4/1LG6/1LP4/1PP4 motors, it is also possible to order the length of protruding cable in plian text with order codesL51andL52.

In combination with winding monitoring (Order codeA11, A12, A15, A16, A23, A25 or A31) or anti-condensation heating (Order codeK45 orK46), optionL44, L45, L47, L48 orL49must be specified twice on ordering.

Position of protruding cables

Motor series 1LA7Frame sizes 56 to 160: As standard, above at drive end (DE).

Motor series 1LA6Frame sizes 100 to 160: As standard, above at drive end (DE).

Motor series 1LA5Frame sizes 180 to 225: As standard, above at drive end (DE).

Motor series 1LA9Frame sizes 56 to 90: As standard, above at drive end (DE). Frame sizes 100 to160: Viewed from drive end, as standard at drive end (DE) on right. Frame sizes 180 to 200: As standard, above at drive end (DE).

Motor series 1LG4/1LG6/1LP4/1PP4Frame sizes 180 to 315: As standard, above at drive end (DE). Optionally left or right at drive end (DE)

Connection, circuit and connection boxes

Type gk 030	Type gk 127	Type gk 130, gk 230, gk 330 (for 1LA5, 1LG4, 1LG6 only)

Type gk 330 (for 1LA5, 1LG4, 1LG6)	Type gk 135, gk 235, gk 335	Type gk 430, gk 431

Type 1XB7 222	Type gt 520, gt 540, gt 620, gt 640	Type 1XB7 422, 1XB7 522

Type 1XB7 622	Type 1XB1 621	Type 1XB1 631

Type gk 465	Type 1XC1 270, 1XC1 380	Type 1XC1 480, 1XC1 580

Type 1XB7 322

Connection boxes for 1LA, 1LG, 1LP and 1PP motors

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection
1LA7, 1LA9 1LP7, 1PP7	56 ... 71	2 cable glands incl. Plugs	Aluminum alloy	Without cable lug or with cable lug
	80 ... 90
	100 ... 160	2 holes 180° apart, 4 break-out openings sealed with cast iron skin (2 left, 2 right), connection box is moulded
1LA5, 1LA9 1LP5, 1PP5	180 ... 225	2 holes with plugs
1LA6	100 ... 160		Cast iron
1LG4, 1LG6 1LP4, 1PP4, 1PP6	180 ... 200		Aluminium alloy¹⁾	Without cable lug
	225			With cable lug
	250 ... 315		Cast iron
1LA8, 1PQ8, 1LL8	315 ... 355 ^{2) 3)}
	400 ... 450	4 holes with plugs

¹⁾ Connection box in cast-iron version K15.

²⁾ 15° to the vertical in each case

³⁾ Frame sizes 357-2 and 357-4 as for frame sizes 400 and 450

Possible positions of connection boxes for 1LA, 1LG, 1LP and 1PP motors

Motors	Frame size	Connection box position			Rotation of connection box
		top	Side, right or left	Retrofitting possible	90°⁴⁾	180°⁴⁾	Retrofitting possible
1LA5, 1LA7, 1LA9 1LP5, 1LP7 1PP5, 1PP7	56 ... 71	°	–	–	°	°	Yes
	80 ... 90	°	°	–	°	°	Yes
	100 ... 160	°	°	–	–⁵⁾	°	Yes
	180 ... 225	°	°	–	°	°	Yes
1LA6	100 ... 160	°	°	–	°	°	Yes
1LG4, 1LG6 1LP4, 1PP4, 1PP6	180 ... 315	°	°	–⁶⁾	°	°	Yes
1LA8	315	°	° ²⁾	–	°	°	–
	355	°	° ²⁾	–	°	°	–
	400, 450	°	° ²⁾	–	°	°	–

° Available version

For further details of 1LA8 motors, see “Dimensions”, “1LA8”.

Connection boxes for 1LA, 1LG, 1LL, 1LP, 1PP and 1PQ motors in standard version and for Zone 22

See the next section of the catalogue for connection boxes for 1LA8, 1PQ8 and 1LL8.

Frame size	Connection box	Number of terminals	Contact screw thread	Max. conductor size	Sealing range	Cable entry^{1) 2)}	Two-part plate ³⁾ Max. outer cable diameter
	Type			mm²	mm	Size	mm
1LA5, 1LA7, 1LA9, 1LP5, 1LP7, 1PP5 and 1PP7
56	gk030 (gk127)⁴⁾	6	M4	1.5 (2.5 with cable lug)	9...17 4.5...10	M25x1.5 M16x1.5
63
71
80
90
100	gk130	6	M4	4	11...21	M32x1.5
112
132	gk230	6	M4	6	11...21	M32x1.5
160	gk330	6	M5	16	19...28	M40x1.5
180
200	gk430	6	M6	25	27...35	M50x1.5
225	gk431	6	M8	35	27...35	M50x1.5
1LA6
100	gk135	6	M4	4	11...21	M32x1.5
112
132	gk235	6	M4	6	11...21	M32x1.5
160	gk335	6	M5	16	19...28	M40x1.5
1LG4, 1LG6, 1LP4, 1PP4 and 1PP6
180	gk330	6	M5	16	19...28	M40x1.5
200	gk430	6	M6	25	27...35	M50x1.5
225	gk431	6	M8	35	27...35	M50x1.5
250	gt 520	6	M10	120	34...42	M63x1.5
280
315	gt 620	6	M12	240⁵⁾	38...45	M63x1.5

The connection box table does not apply to pole-changing motors with three speeds.

¹⁾ Designed for cable glands with O-ring.

²⁾ For 1LA7 motors frame sizes 100 to 160, speed nuts are enclosed for the cable glands.

³⁾ A two-part plate is available. Order code K06. Standard version for 1XB1 631 connection box. For frame size 250 M and above, with strain relief.

⁴⁾ (gk 127) For frame sizes 63 to 90, with additional installation of several temperature sensors, order code A12 or a brake, a larger connection box will be necessary. The specified values do not change.

⁵⁾ With cable cross-sections ?240 mm2, it is recommended that the next larger connection box is used (Order code L00). Alternatively, order a two-part plate (Order code K06).

Connection boxes for 1LA8 and 1PQ8 motors in standard version

Line-fed operation

Frame size	Connection box	Number of terminals	Contact screw thread	Max. rec. conductor cross- section	Outer cable diameter (sealing range)	Cable entry ⁶⁾	Cable gland optionK57 ⁷⁾	Auxiliary lead		Two-part plate optionK06
								Outer cable diameter	Cable entry	Permissible outer cable diameter	Cable entry	Auxiliary lead outer cable diameter
	Type			mm²	mm	Size	Size	mm	Size	mm	Size	mm
1LA8... 1PQ8...
. . . . 315 . . . . 317	gt 640 ^{8) 9) 11)}	6	M12	185	41.0 ... 56.5	2 x M72x2 + 2 x M20x1.5	2 x M72x2	7 ... 13	2 x M20x1.5	–	–	–
. . . . 353 . . . . 355 . . . . 357-6 . . . . 357-8	1XB1 621 ^{8) 10)}	6	M16	240	56.0 ... 68.5	2 x M80x2 + 2 x M25x1.5	2 x M80x2	11.5 ... 15.5	2 x M25x1.5	40 ... 70	2 x D80 + 2 x M25x1.5	11.5 ... 15.5
. . . . 357-2	1XB1 631¹⁰⁾	12	M16	240	56.0 ... 68.5	4 x M80x2 + 2 x M25x1.5	4x M80x2	11.5 ... 15.5	2 x M25x1.5	40 ... 75	4 x D80 + 2 x M25x1.5	11.5 ... 15.5
. . . . 357-4 . . . . 40 . . . . . 45 .	1XB1 634¹⁰⁾

¹⁾ Others available on request.

²⁾ Shielded cable (EMC); with option K57, the cable glands can be supplied.

³⁾ With option L00, the motor can be supplied with the 1XB1 631 connection box (recommended for cable cross-sections ?240 mm2).

⁴⁾ Cable entry without removable plate, cable entry in connection box casing.

⁵⁾ Cable entry with removable plate or supports.

⁶⁾ With option M58, the motor can be supplied with the 1XB1 621 connection box (recommended for cable cross-sections >185 mm2).

Converter-fed operation

Frame size	Connection box	Number of terminals	Contact screw thread	Max. rec. conductor cross-section	Outer cable diameter (sealing range)	Cable entry¹⁾	Cable gland optionK57 ²⁾	Auxiliary lead
								Outer cable diameter	Cable gland optionK57²⁾
	Type			mm²	mm	Size	Size	mm	Size
1LA8... 1PQ8...
. . . . 315 . . . . 317	gt 640 ^{3) 4) 6)}	6	M12	185	41.0 ... 56.5	2 x M72x2 + 2 x M20x1.5	2 x M72x2	9 ... 13	2 x M20x1.5
. . . . 353 . . . . 355	1XB1 621 ^{3) 5)}	6	M16	240	56.0 ... 68.5	2 x M80x2 + 2 x M25x1.5	2 x M80x2	11 ... 16	2 x M25x1.5
. . . . 357-6 . . . . 357-8	1XB1 634 ^{3) 5)}
....357-2	1XB1631⁵⁾	12	M16	240	56.0...68.5	4xM80x2+ 2xM25x1.5	4xM80x2	11...16	2xM25x1.5
....357-4 ....40. ....45.	1XB1634⁵⁾

1) Others available on request.

2) Shielded cable (EMC); with option K57, the cable glands can be supplied.

3) With option L00, the motor can be supplied with the 1XB1 631 connection box (recommended for cable cross-sections ?240 mm2).

4) Cable entry without removable plate, cable entry in connection box casing.

5) Cable entry with removable plate or supports.

6) With option M58, the motor can be supplied with the 1XB1 621 connection box (recommended for cable cross-sections >185 mm2).

Connection boxes for 1LL8 motors in standard version

Line-fed operation

Frame size	Connection box	Number of terminals	Contact screw thread	Max. rec. conductor cross- section	Outer cable diameter (sealing range)	Cable entry ¹⁾	Cable gland optionK57 ⁷⁾	Auxiliary lead		Two-part plate optionK06
								Outer cable diameter	Cable gland optionK57 ⁷⁾	Permissible outer cable diameter	Cable entry	Auxiliary lead outer cable diameter
	Type			mm²	mm	Size	Size	mm	Size	mm	Size	mm
1LL8...
. . . . 31 .	1XB1 621 ^{8) 5)}	6	M16	240	56.0 ... 68.5	2 x M80x2 + 2 x M25x1.5	2 x M80x2	11.5 ... 15.5	2 x M25x1.5	40 ... 70	2 x D80 + 2 x M25x1.5	11.5 ... 15.5
. . . . 35 .	1XB1 631⁵⁾	12	M16	240	56.0 ... 68.5	4 x M80x2 + 2 x M25x1.5	4 x M80x2	11.5 ... 15.5	2 x M25x1.5	40 ... 75	4 x D80 + 2 x M25x1.5	11.5 ... 15.5
. . . . 40 . . . . . 45 .	1XB1 634⁵⁾

¹⁾ Others available on request.

²⁾ Shielded cable (EMC); with option K57, the cable glands can be supplied.

³⁾ With option L00, the motor can be supplied with the 1XB1 631 connection box (recommended for cable cross-sections ?240 mm2).

⁴⁾ Cable entry without removable plate, cable entry in connection box casing.

Converter-fed operation

Frame size	Connection box	Number of terminals	Contact screw thread	Max. rec. conductor cross-section	Outer cable diameter (sealing range)	Cable entry ¹⁾	Cable gland optionK57 ²⁾	Auxiliary lead
								Outer cable diameter	Cable gland optionK57 ²⁾
	Type			mm²	mm	Size	Size	mm	Size
1LL8 ...
. . . . 31.	1XB1 621 ^{8) 5)}	6	M16	240	56.0 ... 68.5	2 x M80x2 + 2 x M25x1.5	2 x M80x2	11 ... 16	2 x M25x1.5
. . . . 35 .	1XB1 631 ⁵⁾	12	M16	240	56.0 ... 68.5	4 x M80x2 + 2 x M25x1.5	4 x M80x2	11 ... 16	2 x M25x1.5
. . . . 40 . . . . . 45 .	1XB1 634 ⁵⁾

¹⁾ Others available on request.

²⁾ Shielded cable (EMC); with option K57, the cable glands can be supplied.

³⁾ With option L00, the motor can be supplied with the 1XB1 631 connection box (recommended for cable cross-sections ?240 mm2).

⁴⁾ Cable entry without removable plate, cable entry in connection box casing.

Connection boxes for 1MA6 and 1MA7 explosion-proof motors and for 1LA6/7/9 and 1LG4/6 motors in (E) Ex n version or for Zone 2 and Zone 21

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection
1MA7, 1LA7, 1LA9	56¹⁾ ... 90	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Aluminum alloy	Without cable lug ²⁾ or with cable lug
	100 ... 160	4 holes incl. 1 certified cable gland with sealing washer and 3 certified plugs
1MA6, 1LA6	100 ... 160	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Cast iron
1MA6, 1LA9	180 ... 200	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Aluminum alloy
	225	2 holes with 2 certified cable glands with sealing washer	Cast iron
	250 ... 315
1LG4,1LG6	180...225	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Aluminum alloy
	250...315	2 holes with 2 certified cable glands with sealing washer	Cast iron

¹⁾ 1MA7 motor series as well as 1LA7/1LA9 motor series in Zone 2, only frame size 63 and above.

²⁾ The components required for connection without cable lugs are supplied with motors of frame size 225 and above as an accessory pack in the connection box.

Connection boxes for 1LA8 and 1PQ8 explosion-proof motors in (E) Ex version or for Zone 2 and Zone 22

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection
1LA8, 1PQ8	315, 355 ^3) 4)	Undrilled cable entry	Cast iron	With cable lug
	400, 450

¹⁾ 15° to the vertical in each case.

²⁾ Frame sizes 357-2 and 357-4 as for frame sizes 400 and 450.

Connection boxes for 1LA8 and 1PQ8 explosion-proof motors in (E) Ex version or for Zone 2 and Zone 22

Frame size	Connection box	Number of terminals	Contact screw thread	Recommended max. conductor cross-section	Cable entry⁵⁾	Two-part plate optionK06
						Max. outer cable diameter	Cable entry	Auxiliary lead outer cable diameter
	Type			mm2	Size	mm	Size	mm
1LA8 ... 1PQ8 ...
.... 315 .... 317	1XB1 621 ⁶⁾ ⁷⁾	6	M16	240	Undrilled cable entry	40 … 70	2 x D80 + 2 x M25x1.5	11.5 … 15.5
.... 353 .... 355 .... 357-6 .... 357-8	1XB1 621⁶⁾⁸⁾	6	M16	240	Undrilled cable entry	40 … 70	2 x D80 + 2 x M25x1.5	11.5 … 15.5
.... 357-2 .... 357-4 .... 40. .... 45.	1XB1 631⁸⁾	12	M16	240	Undrilled cable entry	40 … 75	4 x D80 + 2 x M25x1.5	11.5 … 15.5

¹⁾ Others available on request.

²⁾ Shielded cable (EMC); with option K57, the cable glands can be supplied.

³⁾ With option L00, the motor can be supplied with the 1XB1 631 connection box (recommended for cable cross-sections ?240 mm2).

⁴⁾ Cable entry without removable plate, cable entry in connection box casing.

Possible positions of connection boxes for 1MA6 and 1MA7 explosion-proof motors and for 1LA6 and 1LA7 motors in (E) Ex n version or for Zone 2 and Zone 21

Motors	Frame size	Connection box position			Rotation of connection box
		Above	Side, right or left	Retrofitting possible	90° ⁹⁾	180° ⁹⁾	Retrofitting possible
1MA7 and 1LA7 in Zone 2, 21	56 ¹⁰⁾ ... 71	°	–	–	°	°	Yes
	80 ... 90	°	°	–	°	°	Yes
	100 ... 160	°	°	°	–	° ¹¹⁾	Yes
1MA6 and 1LA6 in Zone 2, 21	100 ... 160	°	°	°	°	°	Yes
	180 ... 225	°	°	–	°	°	Yes
	250 ... 315	°	°	–	°	°	Yes

° Available version

¹⁾ Designed for cable glands with O-ring.

²⁾ 1MA7 motor series as well as 1LA7/1LA9 motor series in Zone 2, only frame size 63 and above.

³⁾From frame size 100.

Standard connection boxes for 1MA6, 1MA7 explosion-proof motors and for 1LA6, 1LA7, 1LA9, 1LG4 and 1LG6 motors in (E) Ex n, VIK version, Zone 2 and Zone 21

Frame size	Connection box	Number of terminals	Contact screw thread	Max. connectable cross-section	Sealing range	Cable entry¹⁾	Two-part plate Max. outer cable diameter
	Type			mm²	mm	Size	mm
1MA7, LA7, 1LA9
56²⁾	gk130	6	M4	4	9...17 4.5...10	M25x1.5 M16x1.5
63
71
80
90
100					14...21	M32x1.5
112
132	gk230	6	M4	6	14...21	M32x1.5
160	gk330	6	M5	16	19...28	M40x1.5
180	1XB7222	6	M6	10	19...28	M40x1.5
200	1XB7322	6	M8	50	26...35	M50x1.5
1MA6, 1LA6
100	gk135	6	M4	4	14...21	M32x1.5
112
132	gk235	6	M4	6
160	gk335	6	M5	16	19...28	M40x1.5
180	1XB7222	6	M6	10	19...28	M40x1.5
200	1XB7322	6	M8	50	26...35	M50x1.5
225
250	1XB7422	6	M10	120	34...42	M63x1.5
280
315	1XB7522	6	M12	240	38...45	M63x1.5
1LG4, 1LG6
180	gt351	6	M6	16	19...27	M40x1.5
200	gt451	6	M8	50	24...35	M50x1.5
225
250	gt540	6	M10	120	34...42	M63x1.5
280
315	gt640	6	M12	240	38...45	M63x1.5

With 1MA motors, unused drilled holes must be sealed in accordance with
EN 50014.

¹⁾ Designed for cable glands with O-ring.

²⁾ 1MA7 motor series as well as 1LA7/1LA9 motor series in Zone 2, only frame size 63 and above.

Connection boxes in EEx de IIC type of protection for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection
1MJ6	71 ... 160 M	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Aluminum alloy	Without cable lug³⁾ or with cable lug
	160 L		Cast iron
	180 ... 200		Aluminum alloy
1MJ7	225	2 holes with 2 certified cable glands with sealing washer	Cast iron
	250 ... 315
1MJ8	355	2 entry threads without cable glands	Cast iron
1MJ1	315 ... 450		Welded steel

¹⁾ The components required for connection without cable lugs are supplied with 1MJ7 motors of frame size 225 M and above as an accessory pack in the connection box.

Possible positions of the connection boxes in EEx de type of protection for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Motors	Frame size	Connection box position			Rotation of connection box
		Above	Side, right or left	Retrofitting possible	90°⁴⁾	180°⁴⁾	Retrofitting possible
1MJ6	71 ... 200	°	°	–	°	°	Yes
1MJ7	225 ... 315	°	°	–	°	°	Yes
1MJ8	355	°	°	–	°	°	Yes
1MJ1	315 ... 450	°	°	–	°	°	Yes

° Available version

¹⁾ The position of the cable entry must be specified when ordering.

Standard connection boxes in EEx de type of protection for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Frame size	Connection box	Number of terminals	Contact screw thread	Max. connectable cross-section	Sealing range	Cable entry¹⁾
	Type			mm²	mm	Size
1MJ6, 1MJ7
71	gk330	6	M4	4	9...17	Standard: 1xM25x1.5 Version with PTC ther mistor: 1xM25x1.5 1xM16x1.5
80
90	gk420	6	M4	6	9...17
100					11...21	Standard: 1xM32x1.5 Version with PTC ther mistor: 1xM32x1.5 1xM16x1.5
112	gk420	6	M4	6	11...21
132
160M	gk420	6	M4	6	19...28	Standard: M40 x 1.5 Version with PTC ther mistor: 1xM40x1.5 1xM16x1.5
160L	gk465	6	M5	16
180	1XC1270	6	M6	25	19...28	M40x1.5
200	1XC1380	6	M8	50	26...35	M50x1.5
225
250	1XC1480	6	M10	120	34...42	M63x1.5
280
315	1XC1580	6	M12	240	38...45	M63x1.5
1MJ8
355	No designation	6	M16	120...300	35...75³⁾	M63x1.5²⁾
1MJ1
315	No designation	6	M16	95...300	35...75	M63x1.5
355	No designation	6	M16	35...300	35...75	M63x1.5
400	No designation	6	M16	35...300	35...75	M63x1.5
450	No designation	6	M20	70...300	35...75	M75x1.5

With 1MJ motors, unused drilled holes must be sealed in accordance with EN 50014.

Version with explosion-proof connection box is available, with the exception of frame sizes 180 and 200.

¹⁾ Designed for cable glands with O-ring.

²⁾ Standard version with cable entry glands split lengthwise for 35 to 75 mm and strain relief.

Connection boxes in cast iron version (Order code K15) for motors 1LG4, 1LG6 and 1MA6, 1MJ6, 1MJ7 explosion-proof motors

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection
1MJ6	71 ... 160 M	2 holes incl. 1 certified cable gland with sealing washer and 1 certified plug	Cast iron	Without cable lug³⁾ or with cable lug
	180 ... 200
1LG4, 1LG6, 1MA6, 1MJ7	180 ... 225	2 holes incl. 2 certified cable glands with sealing washer and 1 certified plug	Cast iron

Possible positions of the connection boxes in cast iron version (Order code K15) for 1LG4, 1LG6 motors and
1MA6, 1MJ6, 1MJ7 explosion-proof motors

Motors	Frame size	Connection box position			Rotation of connection box
		Above	Side, right or left	Retrofitting possible	90° ⁴⁾	180° ⁴⁾	Retrofitting possible
1MJ6	71 ... 80	°	–	–	°	°	Yes
	90 ... 160 M	°	°	–	°	°	Yes
	180 ... 200	°	°	–	°	°	Yes
1LG4, 1LG6, 1MA6, 1MJ7	180 ... 225	°	°	–	°	°	Yes

° Available version

Connection boxes in cast iron version (Order code K15) for motors 1LG4, 1LG6 and 1MA6, 1MJ6, 1MJ7 explosion-proof motors

Frame size	Connection box	Number of terminals	Contact screw thread	Max. connectable cross-section	Sealing range	Cable entry¹⁾
	Type			mm²	mm	Size
1MJ6
71	gk065	6	M4	4	9...17	M25x1.5
80
90				6
100	gk065	6	M4	6	11...21	M32x1.5
112	gk265	6	M4	6	11...21	M32x1.5
112	gk465	6	M4	6	11...21	M32x1.5
132
160 M	gk465	6	M4	6	19...28	M40x1.5
160L²⁾	gk465	6	M5	16	19...28	M40x1.5
180	1XC1290	6	M6	25	24...35	M50x1.5
200	1XC1390	6	M8	50	24...35	M50x1.5
1LG4, 1LG6
180	gt320	6	M5	16	19...28	M40x1.5
200	gt420	6	M6	25	24...35	M50x1.5
225	gt421	6	M8	25	24...35	M50x1.5
1MA6
180	1XB7323	6	M8	50	24...35	M50x1.5
200	1XB7323	6	M8	50	24...35	M50x1.5

With 1MJ motors, unused drilled holes must be sealed in accordance with EN 50014.

Explosion-proof connection boxes in EEx d IIC type of protection (Order code K53) for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Motors	Frame size	Number of cable entries	Connection box material	Feeder connection³⁾
1MJ6	71 ... 160	In standard version: 1 certified plug In versions with PTC thermistors: 2 certified plugs	Cast iron	Without cable lug⁴⁾ or with cable lug
1MJ7	225	2 certified plugs	Welded steel
	250 ... 315
1MJ8	355	2 entry threads without cable glands	Cast iron
1MJ1	315 ... 450		Welded steel

Possible positions of the explosion-proof connection boxes in EEx d IIC type of protection (Order code K53) for explosion- proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Motors	Frame size	Connection box position			Rotation of connection box
		Above	Side, right or left	Retrofitting possible	90° ⁵⁾	180° ⁵⁾	Retrofitting possible
1MJ6	71 ... 80	°	–	–	°	°	Yes
	90 ... 160	°	°	–	°	°	Yes
1MJ7	225 ... 315	°	°	–	°	°	Yes
1MJ8	355	°	°	–	°	°	Yes
1MJ1	315 ... 450	°	°	–	°	°	Yes

° Available version

Explosion-proof connection boxes in EEx d IIC type of protection (Order code K53) for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1

Frame size	Connection box	Number of terminals	Contact screw thread	Max. connectable cross-section	Sealing range	Cable entry
	Type			mm²	mm	Size
1MJ6, 1MJ7
71	gk065d	6	M4	4		Standard: 1xM25x1.5¹⁾Version with PTC thermistor: 1xM25x1.5 1xM20x1.5
80
90				6
100	gk065d	6	M4	6		Standard: 1xM32x1.5¹⁾Version with PTC thermistor: 1xM32x1.5 1xM20x1.5
112	gk265d	6	M4	6
132	gk465d	6	M4	6
160M	gk465d	6	M4	6		Standard: 1xM40x1.5¹⁾Version with PTC thermistor: 1xM40x1.5 1xM20x1.5
160L	gk465d	6	M5	16
225	1XC332.	6	M8	50		2xM55x1.5 or 1xM55x1.5+1xM20x1.5²⁾
250	1XC342.	6	M10	120		2xM63x1.5or 1xM63x1.5+1x M20x1.5²⁾
280
315	1XC352.	6	M12	240		2xM80x2or 1xM80x2+1xM20x1.5²⁾
1MJ8
355	No designation	6	M16	16...300	40...57	2xM63x1.5¹⁾
1MJ1
315	No designation	6	M16	120...300	40...57	2xM63x1.5¹⁾
355	No designation	6	M16	16...300	40...57	2xM63x1.5¹⁾
400	No designation	6	M16	16...300	40...57	2xM63x1.5¹⁾
450	No designation	6	M20	16...300	56...68	2xM75x1.5¹⁾

With 1MJ motors, unused drilled holes must be sealed in accordance with
EN 50014.

Terminal connection

The terminal board accomodates the terminals that are connected to the leads to the motor windings. The terminals are designed so that up to frame size 225, the external (line) connections can be made without the need for cable lugs. With frame size 250 and above, standard connection is with cable lugs.

For the 1LG4/1LG6/1LP4/1PP4 motor series, for frame sizes 250 to 315, stud terminals are available for connection using cable lugs (accessory pack, 3 items). Order codeM46

With frame size 250 and above, if connection without cable lugs is required, the appropriate saddle terminals for connection without cable lugs (accessory pack, 6 items) must be ordered. Order codeM47

For EExe and EExde motors, connection is generally without cable lugs.

The terminal board is permanently mounted on the housing for all motors so that if the connection box is rotated, rotation of the connections for the motor windings is prevented.
Exception:With connection boxes 1XB1 621 and 1XB1 631, the terminal support is mounted on the lower section of the connection box.

For motor series 1LA7/1LP7/1PP7 frame sizes 63 to 90, a terminal strip can be supplied for the main and auxiliary terminals.Order codeM69

Number of auxiliary terminals for 1LA, 1LG, 1LL, 1LP, 1PP and 1PQ motors – Standard version

Motor series 1LA5, 1LA6, 1LA7, 1LP5, 1LP7, 1PP5, 1PP7 have no auxiliary terminals in the standard version.

The maximum number of auxiliary terminals in the main connection box of the motor is specified. An auxiliary connection box is required when the total number of auxiliary terminals exceeds the specified values. The connections can be routed through a separate auxiliary connection box.

For motor series

1LA8, 1PQ8 and 1LL8 frame sizes 315 to 450
1MA6 frame sizes 225 to 315
1MJ7 frame sizes 225 to 315

the 1XB3 020 connection box is available.

Order codeL97

For non-standard motors (1LA8, 1PQ8 and 1LL8 motor series), the following can be supplied:

1XB9 016 auxiliary connection box – Order codeM50

1XB9 014 auxiliary connection box (aluminium) – Order codeM88

Type series	Frame size	Main connection box	Maximum No. of auxiliary terminals
1LG4, 1LG6, 1LP4, 1PP4, 1PP6	180	gk 330	4
	200	gk 430	10
	225	gk 431	10
	250	gt 520	12
	280
	315	gt 620	16
1MA6	225	1XB7 322	8
	250	1XB7 422	12
	280
	315	1XB7 522	12
1MJ7	225	1XC1 380	4
	250	1XC1 480
	280
	315	1XC1 580	6
1LA8, 1PQ8, 1LL8	315	gt 640	6
	355	1XB1 621	12
	400	1XB1 631	24
	450

System ECOFAST

ECOFAST is a system which permits extensive decentralization and a modular structure for installation elements on the component level.

The following motor connectors are available for the separate MICROMASTER 411 frequency converter:

ECOFAST motor connector Han Drive 10e for 230 VD/400 VY
Order code G55
ECOFAST motor connector EMC Han Drive 10e for 230 VD/400 VY
Order code G56

In the basic version, cable entry for the ECOFAST connector
is towards the non-drive end (NDE). The dimensions of the ECOFAST motor connector depend on the motor frame size and can be read from the dimension drawing generator for motors in the “SD configurator for low-voltage motors” tool. It is particularly important to check the dimensions when a brake with a manual release lever is used towards the non-drive end (NDE) due to possible collision of the motor connector and manual release lever as well as in the direction of the drive end (DE) due to possible collision with drive units such as coupling or gear wheels.

Advantages:
The main advantages of the ECOFAST motor connector over a terminal strip are as follows:

Fast assembly of I/O devices (e.g. motor starters) from the ECOFAST system.
Reduction of assembly and repair times at the end user
No wiring errors due to connector technology
Replacement of motor without intervention in the electronics

Main features of the ECOFAST motor connector (with separate MICROMASTER 411 frequency converter):
The motor connector is mounted at the factory and replaces the connection box with terminal board. The connector is mounted towards the non-drive end (NDE). It comprises an angled motor connection casing that can be rotated by 4 x 90°. A 10-pole
(+ earth) male insert is used in the housing. In the plug-in connector, the winding connections are connected and optionally the power supply for the brake and the signal leads for the temperature sensors. The ECOFAST motor connector is compatible with the products of the ECOFAST field device system. Further information can be found in Catalog IK PI.

The mounting dimensions of this casing match those of standard industrial connectors, so it is possible to use a complete series of different standard inserts (such as Han E, ES, ESS from Harting). The motor circuit (star or delta connection) is selected in the mating connector for motor connection. The relevant jumpers are inserted by the customer in the mating connector. As a casing for the mating connector, all standard sleeve casings with lengthwise locking, frame size 10B (e.g. from Harting) can be used.

Note:
Only one sensor (temperature sensor or PTC thermistor) can be connected. The maximum permissible line voltage at the motor connector is ?500 V

Availability of the ECOFAST motor connector
The ECOFAST motor connector can be supplied for the following motor versions with the exception of the explosion-proof motors:

Frame sizes 56 M to 132 M
Output range 0.06 to 5.5 kW (7.5 kW on request)
Direct on-line starting: Voltage code 1 for 230 VD/400 VY, 50 Hz
Star-delta starting: Voltage code 9 with order code L1U 400 VD, 50 Hz

Further details:
Further information can be found in Catalogue IK PI and in Catalogue DA 51.3 “Distributed Drive Solutions MICROMASTER 411 COMBIMASTER 411” as well as on the Internet at:
http://www.siemens.com/ecofast