Control And Signaling Accessories; Closing Coil, Shunt Trip, Undervoltage Release; Description - Siemens SENTRON 3WA1 Manual

Accessories

4.3 Control and signaling accessories

4.3 Control and signaling accessories
4.3.1

Closing coil, shunt trip, undervoltage release

4.3.1.1

Description

Closing coil (CC/CC-COM)
The closing coil makes remote closing of the circuit breaker possible. The prerequisite
for this is the ready-to-close status of the circuit breaker.
Remote closing can take place both via the communication system and by means of
electrical signals on the secondary disconnect terminal system.
The closing coil can be ordered from the factory pre-assembled in the 3WA circuit
breaker/non-automatic circuit breaker or it can be retrofit by the customer.
Closing coils are available in three versions:
• Closing coil (CC) 100% OP, suitable for uninterrupted duty
This version is suitable for uninterrupted duty with an ON period (OP) of 100%.
• Closing coil (CC-COM) 100% OP, communication-capable, suitable for uninterrupted
duty
This version is suitable for uninterrupted duty with an ON period of 100% and for
switching via communication.
• Closing coil (CC) 5% OP, not suitable for uninterrupted duty
The closing coil for momentary duty reduces the make time of the circuit breaker; the
ON period is 5%. This closing coil is not suitable for uninterrupted duty.
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3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06