Lovato SM1R3200 motor protection circuit breaker with adjustable 24 to 32 A thermal protection, 50 kA breaking capacity and rotary knob operation.
£148.73
The Lovato SM1R3200 is a high-performance motor protection circuit breaker designed to protect three-phase motors against overloads, short circuits and phase failure conditions. As part of the Lovato SM1R series, it combines thermal and magnetic protection with a rotary knob operating mechanism, making it ideal for industrial machinery, OEM equipment and automation systems.
This manual motor starter offers an adjustable thermal protection range of 24 to 32 A, providing accurate protection for industrial motors whilst helping to improve system reliability and minimise downtime. Its compact design, robust construction and high breaking capacity make it suitable for demanding industrial motor control applications.
With a rated current of 32 A, a 3-pole configuration and a 50 kA breaking capacity at 400 V AC, the SM1R3200 delivers dependable motor protection whilst remaining suitable for DIN rail or direct panel mounting inside electrical control systems.
Motor protection circuit breakers such as the Lovato SM1R3200 disconnect the motor supply during overload, short-circuit or phase failure conditions. This helps reduce the risk of motor damage, improve equipment reliability and minimise costly downtime within industrial installations.
The SM1R series is widely used by machine builders and panel manufacturers thanks to its compact footprint, dependable protection characteristics and straightforward installation. Its adjustable thermal setting allows accurate matching to the connected motor for improved operational reliability.
| Phase | Three Phase |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SM1R |
| Model | SM1R3200 |
| Product type | Motor protection circuit breaker |
| Rated current | 32 A |
| Thermal trip adjustment range | 24 to 32 A |
| Number of poles | 3 |
| Type of protection | Magnetic and thermal |
| Phase failure protection | Yes |
| Type of control | Rotary knob |
| Short-circuit breaking capacity (Icu) | 50 kA at 400 V AC |
| Rated insulation voltage (Ui) | 690 V AC |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Frequency | 50 / 60 Hz |
| Tripping class | 10A |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail / screw mounting |
| Approximate dimensions | 97 × 45 × 91 mm |
| Weight | approx. 340 g |
| HS Code | 85362010 |
The Lovato SM1R3200 protects three-phase motors against overloads, short circuits and phase failure conditions.
The adjustable thermal protection range is 24 to 32 A.
The breaker provides a maximum short-circuit breaking capacity of 50 kA at 400 V AC.
Yes. The breaker incorporates phase failure detection together with thermal and magnetic motor protection.
It is designed for installation on a standard 35 mm DIN rail or by screw mounting inside electrical control panels and motor control centres.
Lovato SM1R motor protection circuit breakers are trusted by machine builders, automation engineers and industrial panel builders for dependable motor protection, reliable switching performance and long service life.
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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...