MX OF Circuit Breaker Accessory

 

This HKB5 MX+OF Circuit breaker accessory delivers reliable, versatile electrical protection and status monitoring for power distribution systems. Engineered for tool-free snap-on installation, it enables quick, hassle-free assembly without modifying existing panels, saving time and labor costs. Its compact modular design (max 36mm width per breaker) optimizes space in electrical cabinets, while the passive (no-power) operation eliminates energy consumption. Built with flame-retardant materials, it offers exceptional durability, wide temperature tolerance (-35℃~+70℃), and long service life in industrial and commercial environments.

 

 

The unit features a universal AC/DC operating range (24V~400V), integrated MX shunt trip and OF auxiliary contacts, and clear terminal markings for simplified wiring. It includes a visual status indicator for real-time breaker position monitoring, a 1NO/NC contact configuration for status signaling, and strict compliance with international Electrical Safety standards. Each accessory undergoes rigorous testing to ensure reliable tripping at 70%~110% rated voltage, consistent performance, and resistance to voltage fluctuations.

 

 

Ideal for industrial automation, commercial buildings, power distribution cabinets, and fire safety systems, this accessory enables remote tripping, status monitoring, and emergency shutdown. It is compatible with standard miniature Circuit Breakers, making it a versatile solution for electrical contractors, system integrators, and facility managers seeking to enhance electrical safety and control.