Skip to main content

CR-S Range

Space-saving interface relays and optocouplers

The ABB CR-S range of pluggable interface relays and optocouplers is used for electrical isolation, amplification and signal matching between electronic controls – PLCs, iPCs or field bus systems – and the sensor / actuator level. The CR-S range combines the flexibility of a modular system with the ability to switch high currents. Its small footprint makes it ideal for applications where space savings are essential.


  • Space savings
  • Modular
  • LED integrated on all sockets


  • 9 different coil voltages from 5-24 V DC / 12-230 V AC/DC Standard slim relays (5 mm), optocouplers (5 mm), sockets  (6.2 mm) and accessories
  • Combination of 9 different rated control supply voltages possible:  DC versions: 5 V, 12 V, 24 V       AC/DC versions: 12 V, 24 V, 48 V, 60 V, 110 V, 230 V
  • Output relay: 1 c/o (SPDT) contact (6 A), standard and   gold-plated
  • Output optocoupler: Transistor 100 mA - 48 V DC,    MOS-FET 2 A - 24 V DC, Triac 2 A - 240 V AC
  • Cadmium-free contact material
  • All sockets with LED
  • Screw and spring connection terminals
  • Jumper bar (red, black, blue), marker and separator available as accessories