Why Choose the ABB CR-M120AC4 Pluggable Relay?
The ABB CR-M120AC4 is a compact and reliable pluggable interface relay designed for electrical control, automation and interface applications. As part of the ABB CR-M miniature relay range, it provides four changeover contacts for switching multiple circuits from a single control signal.
This relay operates from a 120 V AC rated control supply and provides 4 c/o (SPDT) contacts rated at 250 V / 6 A. Its silver-nickel (AgNi) contacts provide dependable switching performance, while the integrated orange test button enables manual actuation and locking of the output contacts during testing and commissioning.
Designed to plug into a suitable ABB CR-M socket, the CR-M120AC4 can form a compact DIN-rail-mounted interface relay assembly for industrial control panels. ABB offers compatible standard sockets, logic sockets, pluggable function modules, holders and markers, allowing the relay installation to be configured for a wide range of control applications.
Key Advantages
- Compact CR-M miniature pluggable interface relay for industrial control applications.
- 120 V AC rated control supply voltage.
- Four changeover (4 c/o / SPDT) contacts for switching multiple circuits.
- Contacts rated at 250 V / 6 A.
- Durable silver-nickel (AgNi) contact material.
- Integrated orange test button supports manual relay actuation and contact locking.
- Pluggable construction simplifies relay replacement and control-panel maintenance.
- Compatible with ABB CR-M sockets and associated interface relay accessories.
Key Features
- ABB CR-M miniature interface relay series.
- 120 V AC coil / control voltage.
- 4 c/o (SPDT) output contacts.
- 250 V / 6 A contact rating.
- Silver-nickel AgNi contacts.
- Integrated manual test and locking button.
- Designed for use with a suitable ABB CR-M relay socket.
- Socket-based installation supports DIN rail mounting of the complete relay assembly.
- Compact dimensions for space-efficient control cabinet installations.
Reliable Switching for Industrial Control Systems
Pluggable interface relays such as the ABB CR-M120AC4 electrically isolate and interface control signals with switched loads. The four changeover contacts allow several circuits or control functions to be switched simultaneously from the relay's 120 V AC control input, making the device suitable for automation, signalling and electrical control systems.
The CR-M miniature format combines compact dimensions with convenient plug-in installation. When fitted to an appropriate ABB CR-M socket, the relay can be incorporated into DIN-rail-mounted control assemblies, while the integrated test button simplifies functional testing and commissioning without requiring normal coil actuation.
Typical Applications
- Industrial automation and machine control panels.
- PLC and controller interface circuits.
- Control circuit isolation and signal interfacing.
- Multiple-circuit switching applications.
- Motor control and contactor interface circuits.
- Building automation and electrical control systems.
- Alarm, indication and signalling circuits.
- OEM machinery and production equipment.
