3RA2908-1A

Identification letter

13 functions

1 CO contact (1В CO), 1 NO contact (1В NO) semiconductor,
2 CO contacts switched in parallel (2В CO) or
2 CO contacts positively driven and switched in parallel with delay (2В CO)

27 functions

13 functions (A - M) 2 CO contacts switching in parallel (2В CO) + 13 functionsВ (AВ -В M) 1 CO delayed contact + 1 CO instantaneous contact (1В CO + 1В CO) and wye-delta function

A

ON-delay

ON-delay and instantaneous contact

B

OFF-delay with control signal

OFF-delay with control signal and instantaneous contact

C

ON-delay / OFF-delay with control signal

ON-delay / OFF-delay with control signal and instantaneous contact

D

Flashing, symmetrical, starting with interval

Flashing, symmetrical, starting with interval and instantaneous contact

E

Passing make contact, interval relay

Passing make contact, interval relay and instantaneous contact

F

Retriggerable interval relay with deactivated control signal (passing break contact with control signal)

Retriggerable interval relay with deactivated control signal (passing break contact with control signal) and instantaneous contact

G

Passing make contact with control signal, not retriggerable, (pulse-forming with control signal)

Passing make contact with control signal, not retriggerable, (pulse-forming with control signal) and instantaneous contact

H

Additive ON-delay, instantaneous OFF with control signal

Additive ON-delay, instantaneous OFF with control signal and instantaneous contact

I

Additive ON-delay with control signal

Additive ON-delay with control signal and instantaneous contact

J

Flashing, symmetrical, starting with pulse

Flashing, symmetrical, starting with pulse and instantaneous contact

K

Pulse-delayed (fixed pulse (at 1В s) and settable pulse delay)

Pulse-delayed (fixed pulse (at 1В s) and settable pulse delay) and instantaneous contact

L

Pulse-delayed with control signal (fixed pulse (at 1В s) and settable pulse delay)

Pulse-delayed with control signal (fixed pulse (at 1В s) and settable pulse delay) and instantaneous contact

M

Retriggerable interval relay with activated control signal (watchdog)

Retriggerable interval relay with activated control signal and instantaneous contact (watchdog)

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Wye-delta function