Glossary - Siemens UL 1066 Operating Instructions Manual

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Glossary

Automatic reset
Circuit breakers feature an automatic reset of the tripping solenoid. No manual resetting of the Trip Unit is required to 
place the circuit breaker in a ready-to-close state. UL 1066 circuit breakers are factory-fitted with this automatic reset feature as standard. 
The automatic reset feature can be removed as a customer option.
Auxiliary releases
Both undervoltage releases and shunt trips are available.
BSS module
Breaker Status Sensor - for collecting circuit breaker status information via signaling switches and transmitting these data to the
c.
Closing coil
A coil used for electrically closing the circuit breaker.
Closing spring
Module containing a spring as an energy store. The spring is charged by means of a hand-operated lever or a motor, and is latched in its
charged state. When the latches are released, the stored energy is transmitted to the pole and the circuit breaker closes.
Coding of auxiliary connectors
The auxiliary connectors are coded to prevent accidental interchanging of the auxiliary wiring connections.
COM15/COM16 Module
Communications module
Interface adapter for:
- converting c signals to PROFIBUS-DP / MODBUS signals and vice-versa
- providing three potential-free outputs for control functions (OPEN, CLOSE, 1 freely available)
- one input, freely usable for control information from the switchgear.
Additional function for draw-out circuit breakers:
- detecting the circuit breaker position in the cradle by means of signaling switches S 46, S 47 and S 48.
c
Bus system in the vicinity of the circuit breaker and to the FieldBus (PROFIBUS-DP / MODBUS)
Electrical closing lockout
For electrical interlocking of two or more circuit breakers (closing interlock). The electrical closing lockout can block the circuit breaker from
closing via a sustained signal.
Electrical Closed
Electrical activation of the stored energy through the closing coil.
Guide rail
Used for placing the circuit breaker in the cradle.
Finger clusters
Connect the main terminals of the circuit breaker with the main terminals of the cradle.
Mechanical reclosing lockout and Bell Alarm
After tripping, the circuit breaker cannot be reclosed until the mechanical reclosing lockout has been reset by hand.
Mechanism Operated Auxiliary Contacts (MOC)
A switching module for signaling the circuit breakers switch position, which is mounted in the cradle and activated by the actuating shaft of
the circuit breaker.
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