Why Choose the ABB MCRC040ATB Mini Contactor Relay?
The ABB 1SAH100000R9900, type MCRC040ATB, is a compact four-pole mini contactor relay designed for control functions and the switching of small electrical loads. Part of ABB’s M range of mini contactors and mini contactor relays, its space-saving construction makes it suitable for residential, commercial and industrial control applications where panel space is limited.
The MCRC040ATB features four normally open (4NO) auxiliary contacts and screw-terminal connections. Its DC-operated control circuit uses a 12 V DC rated control supply voltage, providing a compact switching solution for low-voltage control systems.
Designed for switching control signals and small loads up to 6 A at 240 V AC in AC-15 applications, the MCRC040ATB can be mounted on a rail or directly to a mounting surface. Its compact dimensions of 48 × 45 × 68 mm help reduce the space required for auxiliary switching inside electrical control panels.
Key Advantages
- Compact four-pole mini contactor relay for control applications.
- Four normally open (4NO) contacts for multiple control circuits.
- 12 V DC control supply for low-voltage control systems.
- Suitable for switching control signals up to 6 A at 240 V AC (AC-15).
- Flexible rail or wall mounting for electrical installations.
- Space-saving design for control panels with limited installation space.
Key Features
- ABB MCRC mini contactor relay series.
- Four-pole contactor relay.
- 4NO built-in auxiliary contacts.
- 12 V DC rated control circuit.
- Screw-terminal connections.
- Suitable for control functions and switching small loads.
- 10 A conventional free-air thermal current for the auxiliary circuit.
- Supports additional front- or side-mounted auxiliary contact blocks.
- Suitable for rail or wall mounting.
Compact Control Switching for Automation Systems
Mini contactor relays such as the ABB MCRC040ATB provide multiple electrically operated contacts for switching control signals within machinery, building services and automation systems. The four normally open contacts allow several control circuits to be operated simultaneously from the 12 V DC coil.
The ABB MCRC range is designed to combine high switching performance with compact dimensions. Additional auxiliary contact blocks can be mounted at the front or side, allowing the contact arrangement to be expanded where a control application requires additional switching points.
Typical Applications
- Industrial machinery control circuits.
- Automation and control panels.
- Building control systems.
- Commercial electrical installations.
- Switching of control signals and small electrical loads.
- OEM machinery and compact control assemblies.
