Why Choose the ABB MCB-02B Contact Block?
The ABB MCB-02B is a modular double contact block with two normally closed (2 NC) contacts, designed for rear mounting with compatible ABB pilot devices. It provides two independent break contacts in one compact assembly, making it suitable for industrial control, interlocking and machine-control circuits.
The MCB-02B uses screw connections for secure field wiring and is designed as a non-illuminated contact element. With a rated insulation voltage and maximum rated operational voltage of 690 V, it provides robust electrical performance for demanding industrial control applications.
Designed for rear mounting, the MCB-02B can be used with compatible ABB Modular pilot-device operators and is also suitable for specified ABB plastic enclosure and DIN-rail applications. Its compact double-contact construction provides two NC switching functions while occupying a single modular contact-block position. ABB identifies this exact product under order code 1SFA611610R2020.
Key Advantages
- 2 NC double contact block provides two normally closed switching functions.
- Rear-mounting design for compatible ABB Modular pilot devices.
- Screw connections provide secure and straightforward field wiring.
- Rated insulation voltage up to 690 V.
- Rated operational current of 6 A at 230 V AC in AC-15 applications.
- High 10 million operation mechanical durability.
- Compact double-contact construction for space-efficient industrial control assemblies.
Key Features
- ABB MCB-02B contact block.
- Double contact block construction.
- 2 NC contact configuration.
- Rear mounting.
- Non-illuminated design.
- Screw electrical connections.
- 690 V rated insulation voltage.
- 6 kV rated impulse withstand voltage.
- 10 million operations mechanical durability.
- Designed for compatible ABB Modular control and signalling devices.
Reliable Normally Closed Switching for Industrial Controls
The ABB MCB-02B provides two normally closed contacts within a single double contact block. In their normal state the contacts provide closed electrical paths, opening when the associated compatible operator is actuated. This makes the contact block useful for machine-control, interlocking and other circuits requiring two NC switching functions from one operator.
Its compact rear-mounted design simplifies integration with compatible ABB Modular pilot devices, while screw connections support straightforward installation and maintenance. The combination of robust electrical ratings and high mechanical durability makes the MCB-02B suitable for repeated operation in industrial machinery and automation systems.
Typical Applications
- Industrial pushbutton control circuits.
- Machine stop and control functions.
- Selector switch assemblies.
- Electrical interlocking circuits.
- Auxiliary control and signalling circuits.
- Industrial operator stations and OEM control panels.
