ABB CR-M4SS Relay Socket for CR-M Series Relays, 250V, 7A

The ABB CR-M4SS is a professional-grade relay socket engineered specifically for the ABB CR-M series of miniature plug-in relays. This component serves as a stable interface for relays equipped with 2 or 4 changeover contacts, providing a secure electrical connection and reliable mounting within industrial control panels. The unit features a durable white housing and utilizes screw connection terminals to ensure firm wiring and long-term operational stability in demanding environments.

Advantages

This relay socket offers exceptional reliability for industrial automation systems by providing a standardized and secure platform for miniature relays. The use of screw terminals facilitates straightforward installation and maintenance, allowing for quick replacement of relays without the need to disconnect primary wiring. Its compatibility with both 2 and 4 changeover contact configurations makes it a versatile choice for various switching tasks, while the availability of optional accessories like pluggable function modules and markers allows for customized system monitoring and identification.

Suitable for

• Industrial control and automation systems
• Signal switching and monitoring circuits
• Panel building and electrical distribution boards
• Maintenance and repair of relay-based control logic

When it may not be suitable

This socket is designed specifically for the ABB CR-M series and may not be compatible with relays from other manufacturers or different series. It is intended for standard industrial environments and is not suitable for applications requiring high-vibration resistance or extreme environmental protection without additional housing.

Key specifications

• Rated voltage: 250 V AC
• Rated current: 7 A
• Compatible relay types: CR-M series with 2 or 4 changeover contacts
• Connection type: Screw terminals
• Dimensions: 27 x 82 x 42.5 mm
• Weight: 70 g
• Colour: White

How to use

To install the ABB CR-M4SS, mount the socket onto a standard DIN rail or directly onto a mounting plate as required by your control panel layout. Connect the necessary control and load wires to the designated screw terminals, ensuring that all connections are tightened to the manufacturer's specified torque. Once the wiring is complete, plug the compatible CR-M relay into the socket until it clicks into place. If required, attach the appropriate function modules or markers to the designated slots on the socket to complete the installation.

What to consider before purchase

• Verify that your relay model belongs to the ABB CR-M series.
• Ensure the electrical load does not exceed the 7 A current rating.
• Check available space in the control cabinet for the 27 mm width of the socket.
• Consider purchasing additional accessories such as holders or markers if needed for your specific application.

Usage recommendations

Always ensure that the power supply is disconnected before installing or replacing the relay in the socket to prevent electrical shock or damage to the equipment. Regularly inspect the screw terminals for tightness during scheduled maintenance to maintain optimal electrical contact.