IMO MU25A-U400 under voltage trip module for MU25A manual motor starters operating on 380-415V AC control voltage.
The IMO MU25A-U400 is a dedicated under voltage trip module designed specifically for use with IMO MU25A manual motor starters. Engineered for industrial automation and motor control systems, this accessory automatically trips the motor starter when the supply voltage drops below a safe operating threshold, helping prevent unsafe automatic motor restart when power returns.
Manufactured by IMO Precision Controls, the MU25A-U400 provides enhanced safety and protection for industrial machinery, motor control centres and automation equipment. The module mounts internally within compatible MU25A manual motor starters and is designed for operation on 380–415 V AC control voltages.
Part of the trusted IMO MU25A accessory range, the MU25A-U400 is widely used in industrial applications where protection against unexpected motor restart is essential. It is ideal for OEM machinery, conveyors, pumps, compressors and automation systems operating in demanding industrial environments.
Under voltage trip modules are used to improve motor safety by disconnecting motor starters if the control voltage falls below a safe operating level. This helps protect machinery operators and equipment by preventing motors from automatically restarting after a power interruption.
The IMO MU25A accessory range is widely used in industrial automation and motor control systems where dependable motor isolation and restart prevention are essential. The MU25A-U400 provides a compact and reliable solution for improving safety and compliance in industrial machinery installations.
| Current | 25 A |
|---|---|
| Voltage | 415 V |
| IP Rating | IP40 |
| Series | MU25A Accessories |
| Product type | Under voltage trip module |
| Compatible products | IMO MU25A manual motor starters |
| Control voltage | 380–415 V AC, 50 Hz / 440 V AC, 60 Hz |
| Function | Under voltage release protection |
| Mounting type | Internal mounting |
| Power consumption | Approx. 2.7 VA / 1.8 W |
| Application | Industrial motor control systems |
| Industrial use | Motor restart prevention and safety protection |
| Connection type | Internal accessory connection |
| Construction | Industrial thermoplastic housing |
| Compliance | IEC / EN 60947 compliant systems |
| Operating environment | Industrial control panels and machinery |
| Weight | Approx. 0.06 kg |
The MU25A-U400 is an under voltage trip module designed to disconnect MU25A manual motor starters if the supply voltage drops below a safe operating level.
The module is specifically designed for use with IMO MU25A manual motor starters.
The MU25A-U400 is designed for 380–415 V AC 50 Hz or 440 V AC 60 Hz control voltages.
Under voltage releases help prevent unsafe automatic restart of motors and machinery after a power failure or voltage drop.
The module mounts internally within compatible MU25A manual motor starter assemblies.
IMO motor starter accessories are widely used in industrial automation and motor control applications to improve operational safety, reliable protection and dependable long-term performance.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...