Description

The ABB MCB-10B is a modular normally open (N.O.) contact block for use with ABB M2 series modular operator components, representing the B-variant of the MCB-10 with specific compatibility characteristics for certain actuator types within the M2 range. It snaps onto compatible ABB M2 operator actuators to provide the electrical switching function in pushbutton and selector switch assemblies within industrial control panels and machine operator interfaces. Rated to IEC 60947-5-1, the MCB-10B delivers reliable N.O. contact performance for start, enable, and signal applications in control circuits.

The MCB-10B uses screw terminal connections and is rated for AC-15 and DC-13 utilisation categories per IEC 60947-5-1, supporting use in both AC and DC control circuit applications. Its modular design allows multiple contact blocks to be stacked onto a single actuator for multi-output switching requirements, providing versatility within a compact installation footprint. The N.O. contact output is ideal for start commands, motor on indication, PLC digital input connections, and interlock signalling within machine and process control circuits.

Compatible with applicable ABB M2 actuator variants, the MCB-10B is used in industrial panel building, machine manufacture, and process plant control station assembly. It forms part of ABB’s M2 modular operator component ecosystem, which allows panel builders and electrical contractors to build complete, functional operator devices from standardised modular parts. The MCB-10B is particularly useful in high-density panel layouts where the modular approach to contact block selection maximises the flexibility and cost-efficiency of operator interface design.