The shunt trip lets a remote safety relay or PLC force the breaker open on demand, which is clean for emergency-stop chains or undervoltage protection schemes.
This MCCB carries a 187 kA interrupting rating at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V. At 690 V the 17 kA rating still handles most standard motor branch circuits, but verify against the transformer and cable impedance on your line.
At 55 °C it derates to 96 A, at 60 °C to 94 A, at 65 °C to 92 A, and at 70 °C to 90 A. If your enclosure is packed tight or near a heat source, the 100 A nameplate only holds below 50 °C.
Auxiliary contacts and trip indication
The trip indicator and voltage trigger are present. That trip alarm switch signals a fault trip separately from the auxiliary — useful for remote annunciation in a PLC or SCADA system. The electrical alarm switch reports the breaker's open/closed status, so you can distinguish a manual open from a protection trip without a separate monitoring relay.
Mechanical endurance and mounting
Rated for 20 000 mechanical operations (latching endurance). The 105 mm width is a 3-pole frame size — verify panel cutout and busbar spacing against your existing layout before ordering.