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3RA6870-3AC

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Заказной номерВесPGОписание продуктаЦена
3RA6870-3AC0.0242FPE PICK OFF, CONNECTION СИЛОВАЯ ЦЕПЬ: ПРУЖИННЫЕ КЛЕММЫ,По запросу

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More information

Home page, seeВ http://www.siemens.com/compactstarter

Online configurator, seeВ https://www.siemens.com/sirius/configurators

Industry Mall, seeВ http://www.siemens.com/product?3RA68

В 


Infeed system for 3RA6

The infeed system for 3RA6 compact starters enables far less wiring in the main circuit and, thanks to the easy exchangeability of the compact feeders, reduces the usual downtimes for maintenance work during the plant's operating phase.

The infeed system provides the possibility of completely prewiring the main circuit without a compact starter needing to be connected at the same time. As the result of the removable terminals in the main circuit, compact starters can be integrated in an infeed system in easy manner (without the use of tools).

In addition, the integrated PE bar means it is optionally possible to connect the motor cable directly to the infeed system without additional intermediate terminals. The infeed system for 3RA6 compact starters is designed for summation currents up to 100 A with a maximum 70 mmВІ conductor cross-section on the feeder terminal block.

The infeed system can be mounted on a standard mounting rail or flat surfaces.

Infeed system for 3RA6 compact starters

(1) Infeed

The 3-phase infeed is available with screw connection (25/35В mm2 up to 63В A or 50/70В mm2 up to 100В A) and spring-type connection (25/35В mm2 up to 63В A).

The infeed with spring-loaded terminal can be fitted on the left as well on as the right to an expansion module.

The infeed with screw terminal is supplied only with a 3-socket expansion module and permanently fitted on the left side.

The infeeds with screw connection enable connection of the main conductors (L1, L2, L3) either from above or from below.

The screw-type infeed is supplied complete with one end cover, the spring-loaded infeed complete with two end covers.

(2) Three-socket expansion modules

The expansion module with three sockets for compact starters is available with screw connection and with spring-type connection.

Expansion modules enable the infeed system to be expanded and can be fitted to each other in any number.

Two expansion modules are held together with the help of two connecting wedges and one expansion plug. These assembly parts are included in the scope of supply of the respective expansion module.

When the infeed system for 3RA6 is used, the compact starters (plug-in modules) are easily assembled and disassembled even when live.

Optional possibilities:

  • PE connection on motor outgoing side
  • Outfeed for external auxiliary devices
  • Connection to 3RV29 infeed system
  • Integration of SIRIUS 3RV1 and 3RV2 motor starter protectors size S0 up to 25 A (using 3RA6890-0BA adapter)
(3) Two-socket expansion modules

If only two instead of three additional sockets are required, then the 2-socket expansion module is the right choice. It has the same functionality as the 3-socket expansion module.

(4) Expansion plug

Two expansion modules can be connected together using the expansion plug. Flexible expansion of the infeed system is thus possible.

(5) PE infeed

This module enables a PE cable to be connected.

The PE infeed can be ordered with screw connection and spring-type connection (35В mm2) and can be fitted on the right or left of the expansion block.

(6) PE expansion plugs

The PE expansion plug is inserted from below and enables two PE bars to be connected.

(7) PE pick-off

The PE pick-off is available with screw connection and spring-type connection (6/10 mm2). It is snapped into the infeed system from below.

(8) connecting wedges

Two connecting wedges are used to hold together two expansion modules.

(9) End covers

On the last expansion module of a row, the socket provided for the expansion plug can be covered by inserting the end cover.

(10) 45 mm adapters for SIRIUS 3RV1/3RV2 motor starter protectors

SIRIUS 3RV1 and 3RV2 motor starter protectors size S0 with screw connection can be fitted to the adapter, enabling them to be plugged into the infeed system.

IP20 terminal covers for increasing finger-safety

Universally configured terminal covers are available for the 25/35 mm2 and 50/70 mm2 3-phase infeeds with screw connection:

  • 3RA6880-2AB terminal covers for infeeds with screw connection 25/35 mm2 (3RA6812-8AB/AC)
  • 3RA6880-3AB terminal covers for infeeds with screw connection 50/70 mm2 (3RA6813-8AB/AC)

The terminal covers can be used in two ways on the feeder terminals of the infeeds with screw connection 25/35 mm2 and 50/70 mm2:

  • If the terminals are connected, the cables are also covered:
    • by approx. 14 mm with the 3RA6880-2AB
    • by approx. 18 mm with the 3RA6880-3AB
  • On clamping points without connected cables, the covers can be turned once and then pushed over the clamping points for finger-safe covering of the metal parts.

Use of the 3RA6880-2AB terminal cover on the infeed with screw connection 25/35 mmВІ (3RA6812-8AB/AC). The upper cover increases the finger-safety for the connected conductors. The identical lower cover is turned for use and prevents touching of the voltage-carrying metal parts of the infeed terminal. For greater clarity the covers in this illustration are shown as transparent, not in their original color.

Terminal blocks

Using the terminal block the three phases can be fed out of the system; this means that single-phase, two-phase and three-phase components can also be integrated in the system.

After the end cover is pulled out, the terminal block can be plugged onto an expansion module.

Expansion plug for SIRIUS 3RV29 infeed systems

After the end cover is pulled out, the expansion plug for the SIRIUS 3RV29 infeed system can be plugged onto an expansion module. It connects the infeed system for 3RA6 compact starters with the SIRIUS 3RV29 infeed system.

Maximum rated operational current

The following maximum rated operational currents apply for the components of the infeed system for 3RA6 compact starters:

Component

Maximum rated operational current

A

Infeed with screw connection 50/70 mmВІ

100

Infeed with screw connection 25/35 mmВІ

63

Infeed with spring-load connection 25/35 mmВІ

63

Expansion plugs

63



With side-by-side mounting of several expansion modules, the maximum rated operational current from the second expansion module to the end of the row is 63В A.

Proposal for upstream short-circuit protection devices

The following short-circuit data apply for the components of the infeed system for 3RA6 compact starters:

Conductor cross-section:

mm2

Maximum let-through current Id, max and current integral I 2t

Proposal for upstream short-circuit protection device

Short-circuit protection for 3RA681.-8A. screw-type infeed (25/35 mmВІ and 50/70 mm2)

2.5 ... 35,
2.5 ... 70

Id, max < 21 kA, IВІt = 530 kAВІs

3RV1041-4MA10
(NH gG 3NA3; 315 A)

Short-circuit protection for spring-loaded infeed, 25/35mmВІ, 3RA6830-5AC

4

Id, max < 9.5 kA, IВІt = 85 kAВІs

3RV1021-4DA10

6

Id, max < 12.5 kA, IВІt = 140 kAВІs

3RV1031-4EA10

10

Id, max < 15 kA, IВІt = 180 kAВІs

3RV1031-4HA10

16/25

Id, max < 19 kA, IВІt = 440 kAВІs

3RV1041-4JA10

35

Id, max < 21 kA, IВІt = 530 kAВІs

3RV1041-4MA10
(NH gG 3NA3; 315 A)

Short-circuit protection for terminal block, 3RV2917-5D

1.5

Id, max < 7.5 kA

5SY...

2.5

Id, max < 9.5 kA

1)

4

Id, max < 9.5 kA

1)

6

Id, max < 12.5 kA

1)



1) To prevent the possibility of short circuits, the cables on the terminal block must be installed so that they are short-circuit proof.

















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания

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