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ABB CR-U 71A Pack of 10 Pluggable Modules
£34.84 per pack of 10
Why Choose the ABB CR-U 71A Pluggable Relay Module?
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.
Key Advantages
- Designed for ABB CR-U universal relay sockets.
- Provides varistor-based overvoltage protection.
- Protects relay coils against switching voltage spikes.
- Compact plug-in design simplifies installation and maintenance.
- No additional wiring required for module installation.
Key Features
- ABB CR-U series pluggable function module.
- CR-U 71A varistor protection module without LED.
- Rated control supply voltage: 115 V AC.
- Integrated overvoltage suppression function.
- Designed for universal CR-U relay socket mounting.
- Compact accessory format for industrial control systems.
Reliable Relay Coil Protection
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.
Typical Applications
- Industrial automation control panels.
- PLC interface relay systems.
- Machine control equipment.
- Electrical switching cabinets.
- Factory automation installations.
- Control and monitoring circuits.
Technical Specifications
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| Device Type | Accessory | |
|---|---|---|
| Mounting Type | Plug-in socket | |
| Current | 71 A | |
| Coil / Supply Voltage | 115 V AC | |
| 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 |
Frequently Asked Questions
What is the ABB CR-U 71A used for?
The ABB CR-U 71A is a pluggable relay accessory module that provides varistor overvoltage protection for ABB CR-U relay sockets.
What voltage does the CR-U 71A support?
The CR-U 71A supports a rated control supply voltage of 115 V AC.
Which relay series is compatible with this module?
The CR-U 71A is designed for use with ABB CR-U universal relay socket systems.
Does the CR-U 71A include LED indication?
No. The CR-U 71A is a varistor protection module without LED indication.
Trusted by Industrial Automation Engineers
ABB CR-U pluggable function modules provide dependable relay accessories for industrial automation, electrical panels and modern control applications.
