The HMCB-B50/3 is a compact 3-pole miniature circuit breaker for DIN-rail assemblies, delivering dependable 50 A protection with a high 25 kA fault interruption rating. It is ideal for three-phase distribution boards, OEM control panels, and machinery where fast, predictable disconnection and compliance with industrial standards are critical.

Featuring a B-curve trip characteristic, the device provides swift overload and short-circuit protection for predominantly resistive and low inrush circuits. Rated operational voltage is 400 V AC, and the 3-pole design ensures coordinated protection across phases in 50 A feeders and branch circuits. The breaker conforms to IEC/EN 60947-2 and meets EN 45545-2 and IEC 61373 requirements, supporting use in demanding environments including rail and vibration-intensive applications while maintaining system selectivity and safety.

Choose the HMCB-B50/3 to streamline specification, reduce panel footprint, and standardize protective devices across projects; for added project assurance and lifecycle support, it is supplied with a 1-year warranty.

• Model: HMCB-B50/3
• Series: MODULAR DIN RAIL COMPONENTS
• Poles: 3-pole
• Rated current: 50 A
• Trip characteristic: B-curve
• Rated operational voltage: 400 V AC
• Breaking capacity (Icu): 25 kA at 415 V (IEC 60947-2)
• Standards: EN 45545-2, IEC 61373, IEC/EN 60947-2