The NXM Moulded Case Circuit Breaker (MCCB) offers reliable protection against overload, short-circuit, and under-voltage in low-voltage power distribution systems. With frame sizes from 63A to 1600A and breaking capacities up to 70kA, it ensures stable operation across commercial, industrial, and motor control applications. Available in fixed or plug-in types, with thermal-magnetic and electronic releases, the NXM series delivers high safety, flexibility, and IEC 60947-2 compliance for modern electrical networks.

Application: Protection against overload, short-circuit, and under-voltage; suitable for distribution and motor circuits
Frame Sizes: 63A, 125A, 160A(W125), 250A, 400A, 630A, 800A(W630), 1000A(W800), 1250A, 1600A
Rated Operational Voltage (Ue): 220V / 230V / 240V / 380V / 400V / 415V / 500V / 690V
Rated Insulation Voltage (Ui): Up to 1000V
Breaking Capacity Codes: E (15kA), S (25–36kA), F (36–50kA), H (50–70kA)
Rated Impulse Withstand Voltage (Uimp): 8–12 kV
Utilization Category: Cat A (Thermal Magnetic) / Cat B (Electronic)
Release Types: Thermal-magnetic fixed type; magnetic fixed type; electronic type
Rated Current (In): 16A – 1600A (depending on frame size)
Rated Short-circuit Breaking Capacity (Icu/Ics): Up to 70kA at 400V AC; up to 50kA at 690V AC
Frequency: 50/60Hz
Number of Poles: 2P, 3P, 4P
Installation Methods: Fixed or plug-in
Operating Temperature Range: −25°C to +70°C
Altitude Limit: ≤2000m (with derating above)
Protection Grade: IP30 (excluding terminals)
Environmental Durability: Tested for dry heat, salt mist, and humidity, compliant with IEC 60068
Standard Compliance: IEC/EN 60947-1, IEC/EN 60947-2, IEC/EN 60947-3
Accessories Available: Auxiliary and alarm contacts; motor-driven mechanism; shunt and undervoltage release; interphase barriers; plug-in base and handheld test module