The TM-D trip provides L (thermal) overload protection and I (magnetic) short-circuit protection, so it covers both sustained overcurrents and fault events in one device. The breaking capacity is the headline number for a distribution MCCB: 50 kA Icu at 415 V AC (50/60 Hz) per IEC 60947-2. At 480 V AC the UL rating is also 50 kA Icu, so it holds up under North American distribution voltages as well.
Mounting and integration into your switchboard
Front connection for both line and load sides simplifies busbar or cable routing inside the enclosure. The 105 mm width and 161 mm height fit standard MCCB cutouts; depth is 86 mm including the toggle handle. The toggle control type gives a clear visual indication of the contact position — ON, OFF, or tripped — which helps a technician walking the line spot an open breaker without opening the door.
Rated for category A utilization (no intentional short-time delay), so it trips instantaneously on magnetic pickup. That makes coordination with downstream devices straightforward — the 50 kA breaking capacity gives plenty of headroom for a selective scheme if the upstream breaker has a short-time delay and higher rating. The electrical durability figures — 40,000 cycles at 440 V In/2 and 20,000 cycles at 440 V In — indicate it handles frequent switching in a distribution board without premature wear.