The diagrams are shown with circuits de-energized, all devices open, connected, and charged, and relays in normal position.
Terminals shown in green (
) must be connected by the customer.
After tripping initiated by the push-to-trip button or by the MN undervoltage trip release or the MX shunt trip release, circuit breaker reset can be:
oautomatic
oremote
omanual
Following tripping due to an electrical fault (with an SDE contact), reset must be carried out manually.
Motor Mechanism (MT) With Reset
Motor mechanism wiring diagrams:
|
With automatic reset 
|
With remote reset 
|
With manual reset 
|
|
Item |
Description |
|---|---|
|
Q |
Circuit breaker |
|
A4 |
Opening order |
|
A2 |
Closing order |
|
B4, A1 |
Motor mechanism power supply |
|
L1 |
Manual position (manu) |
|
B2 |
SDE interlocking (mandatory for correct operation) |
|
BPO |
Opening pushbutton |
|
BPF |
Closing pushbutton |
|
SDE |
Electrical-fault indication contact (short-circuit, overload, ground-fault, earth-leakage) |
Communicating Motor Mechanism (MTc)
Opening, closing and reset orders are transmitted via the communication network. The Enable automatic reset and Enable reset even if SDE parameters must be set using EcoStruxure Power Commission software via the screen, by clicking the blue text.
Auto/manu is a switch on the front of the motor mechanism.
Terminals shown in green () must be connected by the customer.
|
Item |
Description |
|---|---|
|
Q |
Circuit breaker |
|
B4, A1 |
Motor mechanism power supply |
|
BSCM |
Breaker status control module |
