The MGP1252L23 is a 2-pole molded case circuit breaker from the Schneider Electric PowerPacT 4 range, rated 125 A at 40 °C with a TM-D thermal-magnetic trip unit providing LI protection — thermal overload (L) and magnetic short-circuit (I). It is certified to BS EN 60947-2, with an isolation suitability declaration conforming to that standard.
Lifecycle status
This part is classified as obsolete by the manufacturer. No official successor order code has been published for the MGP1252L23.
Mounting and application context
Panel-mounted via backplate, accepting horizontal or vertical orientation. The 2-module 35 mm footprint suits standard enclosure backplate layouts. Phase connection is L2-L3, making this breaker specific to two-pole distribution circuits — not a three-phase main. Electrical durability is 20,000 cycles at rated current and 10,000 cycles at 2× In, both at 277 V; mechanical durability matches at 20,000 cycles.