Why Choose the ABB CR-M048AC4LG Pluggable Relay?
The ABB CR-M048AC4LG is a compact and reliable pluggable miniature interface relay designed for electrical isolation, signal amplification and signal switching in industrial control and automation systems. As part of the ABB CR-M pluggable relay range, it provides a practical interface between electronic control equipment such as PLCs and field-level sensors, actuators and other electrical loads.
This relay features 4 changeover (4 C/O) contacts and a 48 V AC rated control supply voltage, providing multiple switching contacts within a compact relay format. Its gold-plated silver-nickel contacts support dependable switching, particularly in low-current signal applications, while the integrated LED provides convenient visual indication of relay operation.
With 4 C/O (SPDT) contacts rated at 250 V AC, 6 A, the CR-M048AC4LG is well suited to industrial control panels, machinery, PLC interfaces and signal switching applications. An integrated orange test button allows manual actuation and locking of the output contacts, supporting efficient commissioning, testing and maintenance.
Key Advantages
- Compact pluggable miniature interface relay for industrial automation.
- 48 V AC rated control supply voltage for compatible AC control circuits.
- 4 changeover contacts provide flexible multi-circuit switching.
- 250 V AC, 6 A contact rating for industrial control applications.
- Gold-plated contacts support reliable switching, including low-current signals.
- Integrated LED status indication provides convenient visual monitoring.
- Integrated test button enables manual actuation and locking of the output contacts.
- Pluggable construction simplifies installation, replacement and maintenance.
Key Features
- ABB CR-M pluggable miniature relay range.
- 48 V AC coil / rated control supply voltage.
- 4 C/O (SPDT) contacts.
- 250 V AC, 6 A contact rating.
- Gold-plated silver-nickel contacts (AgNi/Au).
- Integrated LED indication.
- Integrated orange test button for manual actuation and locking.
- Compatible with ABB CR-M standard sockets, logic sockets and accessories.
- Compact pluggable construction for control cabinet applications.
Reliable Interface Switching for Industrial Automation
Interface relays such as the ABB CR-M048AC4LG provide galvanic isolation and reliable switching between electronic control systems and field devices. They are commonly used to interface PLCs and other industrial controllers with sensors, actuators and electrical loads while supporting signal amplification, voltage matching and circuit multiplication where required.
The ABB CR-M range uses a modular pluggable concept with compatible standard sockets, logic sockets, function modules, holders and markers available for flexible control-panel configurations. The CR-M048AC4LG combines four changeover contacts with a 48 V AC coil, gold-plated contacts, integrated LED indication and a manual test button for versatile industrial interface applications.
Typical Applications
- PLC input and output interfacing.
- Industrial control and automation panels.
- Electrical isolation between control and field circuits.
- Low-current signal switching.
- Signal amplification and signal matching.
- Sensor and actuator interfacing.
- Industrial machinery and production equipment.
- OEM machine building and automation systems.
