It's built for distribution duty in a fixed-mount, 2-pole configuration, and it's certified to EN/IEC 60947-2. At 415 V AC the breaking capacity drops to 18 kA Icu, which is still enough for most commercial distribution boards. The thermal-magnetic trip gives you two protection curves in one package: the thermal element (L) handles overloads — slow, sustained overcurrents from a stalled motor or a loaded feeder — and the magnetic element (I) catches short-circuits instantly. No electronics to fail, no auxiliary power needed to trip. It's the workhorse choice for panels where simplicity and reliability beat adjustability.
This breaker mounts on a backplate — fixed, not DIN-rail — so it's for a panel where you bolt the MCCB directly to the mounting plate. The 70 mm width and 161 mm height fit standard enclosure cutouts, and the 86 mm depth leaves room for front-connected cables (both line and load connections are front-facing). The IK07 impact rating means it shrugs off a 2 J hammer blow during installation. The 35 mm connection pitch matches standard busbar spacing. Pollution degree 3 means it's happy in a typical industrial panel with conductive dust or occasional condensation.
Rated current: 50 A at 40 °C. Poles: 2. Breaking capacity (Icu): 36 kA at 240 V AC, 18 kA at 415 V AC, 15 kA at 440 V AC, 10 kA at 525 V AC, 5 kA at 690 V AC. DC breaking: 36 kA at 250 V DC (1 pole), 36 kA at 500 V DC (2 poles in series). Electrical endurance: 20,000 cycles at 277 V at In/2, 10,000 cycles at 277 V at In. Mechanical endurance: 20,000 cycles. Power dissipation per pole: 4.11 W. Operating altitude: 0–2000 m without derating, 2000–5000 m with derating. Relative humidity: 0–95 %. Ambient temperature for trip rating: 40 °C.