The Schneider Electric MGP0633X is a PowerPacT 4 molded case circuit breaker (MCCB) with three poles, rated 63 A at 40 °C, and a TM-D thermal-magnetic trip unit providing LI protection — L for overload (thermal, adjustable 44.1...63 A) and I for short-circuit (magnetic, fixed). It is designed for distribution in 250 A or 400/630 A panelboards, panel-mounted on a backplate, and can be installed horizontally or vertically. The toggle control type gives a clear visual indication of the contact position.
Breaking capacity and isolation — what the ratings mean
Rated 36 kA Icu (ultimate) and 36 kA Ics (service) at 415 V AC 50/60 Hz, this MCCB can safely interrupt a fault current up to 36 kA without needing replacement after a single high-fault event — the Ics equals Icu, so it remains functional after clearing a fault at its full rating.
Lifecycle status — obsolete, sourced to order
The MGP0633X is marked obsolete by the manufacturer.
Durability and mounting
Mechanical durability is rated at 50,000 cycles; electrical durability at 50,000 cycles at 440 V at In/2 and 30,000 cycles at 440 V at full In. The breaker occupies 3 module spaces on a 35 mm backplate, panel-mounted. No earth-leakage protection is integrated — that is handled separately downstream if required.