Why Choose the ABB CR-U048DC2LD Pluggable Relay?
The ABB CR-U048DC2LD is a robust and versatile pluggable universal interface relay designed for electrical isolation, signal amplification and signal matching in industrial automation and control systems. As part of the ABB CR-U pluggable relay series, it combines a 48 V DC control coil with two changeover contacts for dependable switching between electronic controls and field-level devices.
This relay provides 2 C/O (DPDT) contacts rated at 250 V / 10 A. Its plug-in construction allows installation in compatible ABB CR-U sockets, providing a convenient and service-friendly solution for PLC, industrial controller, sensor, actuator and general-purpose interface circuits.
The CR-U048DC2LD incorporates an integrated LED status indicator and free-wheeling diode. The LED provides clear visual indication of coil energisation, while the diode suppresses inductive voltage peaks generated when the DC coil is switched off. An integrated blue test button provides manual actuation and locking of the output contacts for efficient commissioning, testing and maintenance.
Key Advantages
- Robust pluggable universal interface relay for industrial control applications.
- 48 V DC rated control supply voltage.
- Two changeover (2 C/O / DPDT) contacts provide flexible switching.
- 250 V / 10 A contact rating for industrial interface applications.
- Integrated LED status indication for convenient operational monitoring.
- Integrated free-wheeling diode provides DC coil transient suppression.
- Integrated blue test button supports manual actuation and locking of the output contacts.
- Plug-in design simplifies installation, commissioning and relay replacement.
Key Features
- ABB CR-U universal interface relay series.
- 48 V DC coil voltage.
- 2 C/O (DPDT) output contacts.
- 10 A contact rating.
- 250 V output rating.
- Silver-nickel alloy (AgNi) contacts.
- Built-in LED operating indicator.
- Built-in free-wheeling diode.
- Integrated blue test button for manual actuation and locking.
- Compatible with suitable ABB CR-U relay sockets and accessories.
Reliable Interface Switching for Industrial Automation
Pluggable interface relays such as the ABB CR-U048DC2LD provide electrical isolation, amplification and signal matching between electronic control equipment and field-level sensors or actuators. Its two changeover contacts allow two circuits to be switched from a single 48 V DC control signal.
The ABB CR-U range is designed for integration with PLCs, industrial controllers and conventional industrial control circuits. The integrated LED makes relay status easy to identify, while the manual test button simplifies commissioning and troubleshooting and the free-wheeling diode provides suppression of inductive voltage transients across the DC coil.
Typical Applications
- PLC and industrial controller interface circuits.
- Industrial control cabinets and switchboards.
- Machine control and factory automation systems.
- Electrical isolation and signal amplification.
- Sensor and actuator interface circuits.
- Motor control and auxiliary switching circuits.
- Process control and instrumentation systems.
