Electrical Parameters
Rated Control Supply Voltage: 24 V AC.
Rated Operational Voltage (Output Contacts): Up to 250 V AC.
Contact Configuration: Four SPDT (changeover) contacts.
Contact Ratings: 6 A switching capacity at 250 V AC per contact.
Operational Current Categories:
AC‑12: ~6 A at ~230 V AC
AC‑15: ~1.5 A at ~120 V AC, ~1 A at ~230 V AC
DC‑12: ~6 A at ~24 V DC
DC‑13: ~2 A at ~24 V DC, ~0.1 A at ~250 V DC
Rated Insulation Voltage: ~250 V between control and output circuits.
Mechanical & Physical
Dimensions:
Width: ~21.2 mm
Height: ~35.6 mm
Depth: ~27.5 mm
Weight: ~0.033 kg.
Terminal Type: Flat‑pin connections for secure and compact socket wiring.
Mounting: Relays plug into a socket that clips to a TH35 DIN rail.
Environmental
Operating Ambient Temperature: Approximately –40 °C to +55 °C.
Storage Temperature: Typically down to –40 °C to +85 °C.
Protection Rating: IP40 (touch‑protected terminals when mounted).
Typical Applications
Electrical Isolation & Signal Amplification: Between PLC/logic outputs and field devices.
Control Panels: Switching auxiliary devices, indicators, and small loads.
Automation Systems: Relay logic implementation, interlocking, and control signal distribution.
Equipment Interfaces: Between low‑power control circuitry and higher voltage outputs.
The ABB CR‑M024AC4 is a pluggable miniature interface relay designed for industrial and automation control systems. It plugs into a compatible ABB CR‑M socket and can be mounted on a standard DIN rail. Its purpose is to provide reliable electrical isolation and switching between a low‑power control signal and one or more output circuits, enabling control logic to operate external devices such as contactors, indicators, or other loads.