Why Choose the ABB MCRC040ATWD Mini Contactor Relay?
The ABB 1SAH220410R9900, type MCRC040ATWD, is a compact four-pole mini contactor relay designed for switching control signals and small electrical loads in residential, commercial and industrial applications. Part of ABB’s MCRC range, it provides reliable auxiliary switching performance in a space-saving design for electrical control panels.
The MCRC040ATWD features four normally open contacts (4NO) and a DC-operated control circuit. Its extended operating-limits coil is rated for a 24 V DC control supply, while screw-terminal connections provide secure and practical wiring for automation and control installations.
Designed for switching control signals up to 6 A at 240 V AC in AC-15 applications, the MCRC040ATWD combines compact dimensions with flexible installation options. It is suitable for wall or DIN-rail mounting and provides a practical solution where high performance is required but available panel space is limited.
Key Advantages
- Compact four-pole mini contactor relay for control applications.
- Four normally open (4NO) contacts for auxiliary switching functions.
- 24 V DC control supply with extended operating limits.
- Suitable for switching control signals up to 6 A at 240 V AC (AC-15).
- Screw-terminal connections for straightforward electrical installation.
- Suitable for wall or DIN-rail mounting in compact control assemblies.
Key Features
- ABB MCRC mini contactor relay range.
- MCRC040ATWD product type.
- Four-pole contactor relay.
- 4NO auxiliary contact configuration.
- 24 V DC rated control circuit voltage.
- Extended operating-limits coil.
- 6 A AC-15 switching capability at 240 V AC.
- 10 A conventional free-air thermal current.
- Screw-terminal connections.
- Suitable for DIN-rail or wall mounting.
- Compact 48 × 45 × 68 mm construction.
Compact Auxiliary Switching for Control Systems
Mini contactor relays such as the ABB MCRC040ATWD provide electrically operated auxiliary contacts for switching control signals and small electrical loads. The four normally open contacts allow multiple control circuits to be operated simultaneously from a single DC control input.
The ABB MCRC range combines compact dimensions with reliable switching performance, making these relays suitable for industrial automation, machinery control and building electrical systems where efficient use of panel space is important.
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 electrical assemblies.
