£53.60
The ABB CR-U 71A (1SVR405666R1000) is a compact pluggable function module designed for ABB CR-U universal relay sockets. This accessory module provides reliable varistor-based overvoltage protection for relay coils and control circuits, helping improve switching reliability and protect industrial automation systems from voltage transients.
Designed for the ABB CR-U interface relay series, the CR-U 71A offers a simple plug-in solution for enhancing relay protection without additional wiring. The module installs directly into compatible CR-U sockets and helps suppress transient voltages generated during relay switching operations.
With a rated control supply voltage of 115 V AC, the ABB CR-U 71A is suitable for industrial control panels, PLC interface systems and electrical automation applications where dependable relay coil protection is required.
The ABB CR-U 71A improves relay circuit reliability by reducing the effects of transient overvoltages created during switching operations. The integrated varistor helps protect relay components and connected control devices, supporting longer service life and stable operation.
As part of the ABB CR-U accessory family, this pluggable module allows engineers to customise relay assemblies with additional protection features while maintaining a compact installation footprint.
| Current | 71 A |
|---|---|
| Manufacturer | ABB |
| Series | CR-U |
| Model | CR-U 71A |
| Product ID | 1SVR405666R1000 |
| Product type | Pluggable function module |
| Application | Accessory for CR-U interface relays |
| Function | Overvoltage protection |
| Protection component | Varistor |
| LED indication | None |
| Rated control supply voltage | 115 V AC |
| Output | None |
| Output signal | None |
| Mounting type | Plug-in relay socket mounting |
| Compatible series | ABB CR-U universal relay sockets |
| Width | 34 mm |
| Height | 24 mm |
| Depth | 9 mm |
| Weight | approx. 0.007 kg |
| HS Code | 85480090 |
| Country of Manufacture | China |
The ABB CR-U 71A is a pluggable relay accessory module that provides varistor overvoltage protection for ABB CR-U relay sockets.
The CR-U 71A supports a rated control supply voltage of 115 V AC.
The CR-U 71A is designed for use with ABB CR-U universal relay socket systems.
No. The CR-U 71A is a varistor protection module without LED indication.
ABB CR-U pluggable function modules provide dependable relay accessories for industrial automation, electrical panels and modern control applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...