ABB CR-M230AC4 Pluggable Interface Relay

Product Overview

The ABB CR-M230AC4 pluggable interface relay is a high-performance electromechanical relay designed for industrial automation, process control, and signal isolation applications. It features a 230 VAC rated coil and a 4-changeover contact configuration, offering reliable switching performance in compact control systems. Its modular design provides easy integration into control panels, PLC interfaces, and motor control circuits.

Detailed Specifications

• Model: CR-M230AC4

• Relay Type: Pluggable interface relay

• Coil Voltage: 230 VAC

• Coil Frequency: 50/60 Hz

• Contact Configuration: 4 C/O (4 changeover contacts)

• Rated Contact Current: 6 A (resistive load)

• Rated Contact Voltage: up to 250 VAC / 30 VDC

• Mechanical Life: ≥ 10 million operations

• Electrical Life: ≥ 100,000 operations (rated load)

• Power Consumption: approx. 0.9 VA

• Mounting: DIN-rail socket mounting

• Operating Temperature: –40 °C to +70 °C

• Insulation Voltage: 6 kV (coil-to-contact)

• Protection Class: IP20 (relay body)

Key Advantages & Features

• High reliability and long operating life for industrial environments

• Wide compatibility with 230 VAC control power systems

• 4 changeover contacts allowing versatile control combinations

• Excellent electrical isolation ensuring system safety

• Modular pluggable design for easy replacement and maintenance

• Compact footprint optimized for dense control cabinet layouts

Typical Applications

• Industrial automation systems

• PLC / DCS interface expansion

• Machinery control circuits

• Motor and pump control

• Auxiliary control in power systems

• Signal isolation and conversion in process industries

• Building automation and energy management

Precautions

1. Ensure the coil voltage matches the rated 230 VAC specification.

2. Avoid overloading the contacts to maintain the relay’s service life.

3. Install in clean, dry, and well-ventilated environments.

4. Ensure proper connection to the relay socket to prevent contact failure.

5. Disconnect power before maintenance or replacement.

6. For inductive loads, external surge protection is recommended.