Description

The ABB MCBH-11 is a modular contact block providing one normally open (N.O.) contact plus one normally closed (N.C.) contact in a single module, for use with ABB M2 series pushbutton components as part of the MCBH stacking contact block range. This combined N.O. + N.C. configuration enables a single contact block module to serve both a switching and an interlocking or signalling function simultaneously, reducing the number of modules required for control circuits needing both contact states from a single operator action. Rated to IEC 60947-5-1, it offers reliable performance in demanding industrial control circuit applications.

The MCBH-11 features screw terminal connections and is rated for AC-15 and DC-13 utilisation categories. The simultaneous availability of N.O. and N.C. contacts in a single module simplifies the assembly of operator devices for reversing starter interlock circuits, start/stop signalling pairs, and dual-function PLC input interfaces, minimising the number of contact block modules needed and reducing the depth of the modular contact stack on the operator actuator. It is compatible with the MCBH-00 holder module and other MCBH series blocks for multi-contact assemblies.

The MCBH-11 is widely used in industrial control panel design, machine operator interface construction, and motor control panel assembly where both N.O. and N.C. outputs are required from a single pushbutton or selector switch. Panel builders value the efficiency of its combined contact design, which reduces component counts and assembly time without compromising functionality. As part of ABB’s M2 modular operator system, it maintains full dimensional compatibility with other M2 operator components and accessories.