IMO C4/63R-40 thermal magnetic motor circuit breaker with adjustable 28-40 A overload protection and 520 A magnetic trip release for industrial motor protection applications.
Original price was: £190.73.£126.80Current price is: £126.80.
The IMO C4/63R-40 is a robust thermal magnetic motor circuit breaker designed to provide reliable protection for three-phase motors used in industrial machinery, automation systems and electrical control panels. As part of the IMO C4 motor protection circuit breaker range, it combines adjustable thermal overload protection with rapid magnetic short-circuit protection in one compact, panel-friendly device.
This motor protection circuit breaker helps safeguard motors against overloads, short circuits and phase failure conditions, reducing the risk of motor damage and unplanned downtime. Its rotary operating mechanism, manual reset function and DIN rail mounting design make it a practical choice for panel builders, OEMs and maintenance engineers working with demanding motor control applications.
With an adjustable current range of 28-40 A and a magnetic trip release of 520 A, the C4/63R-40 is ideal for protecting industrial motors used in pumps, fans, compressors, conveyors, machine tools and production machinery.
The IMO C4/63R-40 combines thermal overload and magnetic short-circuit protection to safeguard three-phase motors in industrial environments. The adjustable current setting allows the breaker to be matched to the motor's full-load current, helping maintain dependable protection and reducing unnecessary tripping.
Its compact construction and accessory compatibility make it suitable for motor starter assemblies, machine control panels and OEM equipment where safe switching, motor isolation and reliable protection are essential.
| Current | 40 A |
|---|---|
| Manufacturer | IMO Precision Controls |
| Series | C4 Motor Protection Circuit Breakers |
| Model | C4/63R-40 |
| Alternative SKU | C463R40 |
| Product type | Thermal magnetic motor circuit breaker |
| Current adjustment range | 28-40 A |
| Magnetic trip release | 520 A |
| Number of poles | 3 |
| Rated operational voltage | Up to 690 V AC |
| Rated insulation voltage | 1000 V |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Short-circuit breaking capacity | Up to 100 kA |
| Mounting type | DIN rail / panel mounting |
| Manufacturer part number | C4/63R-40 |
| HS Code | 8536201090 |
| Country of Manufacture | South Korea |
The IMO C4/63R-40 is used to protect three-phase motors against overload, short-circuit and phase failure conditions in industrial control systems.
The adjustable thermal overload range is 28-40 A.
The magnetic short-circuit release operates at approximately 520 A.
Yes. The C4/63R-40 is designed for DIN rail or panel mounting inside industrial electrical control cabinets.
It is commonly used with pumps, fans, compressors, conveyors, production machinery, motor starter panels and OEM automation systems.
IMO C4 motor protection circuit breakers are trusted by panel builders, OEM manufacturers and industrial engineers for dependable motor protection, safe isolation and reliable long-term performance in demanding control applications.
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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...