IMO MU25A25 manual motor starter with adjustable 20-25A overload protection for industrial motor control applications.
The IMO MU25A25 is a high-performance manual motor starter designed to provide reliable motor isolation, switching and overload protection for industrial automation and motor control systems. Manufactured by IMO Precision Controls, this compact starter combines thermal and magnetic motor protection within a durable industrial enclosure suitable for demanding industrial environments.
Part of the trusted IMO MU25A manual motor starter series, the MU25A25 is engineered to protect three-phase motors against overload and short-circuit conditions while providing safe manual switching and local isolation. Its DIN rail mountable design makes it ideal for automation panels, motor control centres and OEM machinery installations where compact and reliable motor protection are essential.
With an adjustable thermal setting range of 20 to 25 A, the IMO MU25A25 is ideally suited to protecting industrial motors used in conveyors, pumps, compressors, fans and process machinery. The integrated rotary handle enables safe local motor isolation and manual control directly from the panel front.
Manual motor starters combine motor isolation, overload protection and short-circuit protection within a single compact device. This simplifies panel design while helping protect motors against electrical faults and overload conditions that could otherwise result in equipment damage or unplanned downtime.
The IMO MU25A series is widely used in industrial motor control systems requiring compact and reliable motor protection. The MU25A25 is particularly suited to protecting medium-sized motors within automation systems, machinery and OEM equipment installations.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Series | MU25A Manual Motor Starters |
| Product type | Manual motor starter |
| Current adjustment range | 20–25 A |
| Protection type | Thermal magnetic motor protection |
| Motor protection | Overload and short-circuit protection |
| Switching method | Rotary manual operation |
| Mounting type | DIN rail mounting |
| No. of phases | Three phase |
| Rated insulation voltage | 690 V AC |
| Frequency | 50 / 60 Hz |
| Rated current Ith open at 50°C | 25 A |
| Mechanical life | Approx. 100,000 operations |
| Electrical life | Approx. 100,000 operations |
| Switching frequency | 30 operations per hour |
| Operate time | Approx. 7 ms |
| Trip class | Class 10A |
| Terminal capacity | Main 0.75–4 mm² |
| Compliance | IEC / EN 60947-4-1 and EN 60947-2 |
| Weight | Approx. 0.25 kg |
The MU25A25 is a manual motor starter used for switching and protecting three-phase electric motors in industrial motor control systems.
The IMO MU25A25 supports adjustable motor protection settings from 20 to 25 A.
The unit provides integrated overload and short-circuit protection for industrial motor applications.
Yes. The MU25A25 is designed for installation on standard DIN rails within industrial control panels.
Yes. The starter supports optional auxiliary contacts and under-voltage trip accessories for enhanced control functionality.
IMO manual motor starters are widely used in industrial automation and motor control applications to provide dependable motor protection, compact installation and reliable long-term operation.
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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...