ABB CR Interface Relays & Accessories

• CR-P: PCB-type pluggable relays, with PCB mounting options described in the relevant ABB documentation.
• CR-M: miniature pluggable relays; CR-U: universal pluggable relays.
• CR-S: slim interface relays and optocouplers. Electromechanical and solid-state outputs require different load checks.
• The reference list also contains CR-MX items and accessories. Their exact specifications must be checked against the complete product code.

Coil, Contacts & Load Selection

Match the coil or input voltage, AC/DC supply and permitted operating range to the control circuit. Then confirm contact arrangement, number of changeover contacts, load voltage and switching duty. A resistive-load current rating does not establish suitability for an inductive load, motor or DC circuit.

For solid-state relay or optocoupler versions, check the specified output type, AC/DC load, minimum and maximum load, leakage current and protection requirements. Do not transfer electromechanical contact ratings to an electronic output.

Sockets, Modules & Standards

Check the matching socket, terminal style, retaining holder and any indication, suppression or timing module. Accessories in the table are separate products; a relay code does not automatically include them.

ABB publishes contact utilization categories and ratings under IEC 60947-5-1 in its interface relay catalogue. Apply the relevant rating and approval to the exact relay, socket and output version, rather than assigning one current, voltage or certification to the entire CR range.

Selecting a CR Product & Requesting a Quote

Provide the complete model, ABB Order Code / Article Number, quantity and destination country. For a new selection, include control voltage, AC/DC supply, contact arrangement or electronic output type, load voltage/current and application. For an existing installation, add the relay and socket markings, wiring details and a clear photo.

Contact us to request a quote. Historical codes remain available for identification; their individual ratings and accessory combinations require confirmation.

Technical reference: ABB interface relays and optocouplers and ABB interface relay catalogue, October 2024.