Lovato SM1R2300 motor protection circuit breaker with adjustable 17 to 23 A thermal protection, 50 kA breaking capacity and rotary knob operation.
£96.69
The Lovato SM1R2300 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 proven Lovato SM1R series, it combines thermal and magnetic protection with an easy-to-use rotary operating mechanism, making it ideal for industrial machinery, control panels and OEM equipment.
This manual motor starter offers an adjustable thermal protection range of 17 to 23 A, providing precise motor protection for larger industrial motors. Its compact construction, high mechanical durability and IEC-compliant performance make it a dependable solution for demanding motor control applications.
With a rated current of 23 A, a 3-pole configuration and a 50 kA breaking capacity at 400 V AC, the SM1R2300 provides reliable protection whilst remaining suitable for installation on standard DIN rails or direct panel mounting within industrial control systems.
Motor protection circuit breakers such as the Lovato SM1R2300 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 | SM1R2300 |
| Product type | Motor protection circuit breaker |
| Rated current | 23 A |
| Thermal trip adjustment range | 17 to 23 A |
| Number of poles | 3 |
| Type of protection | Magnetic and thermal |
| Phase failure detection | 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 SM1R2300 protects three-phase motors against overloads, short circuits and phase failure conditions.
The adjustable thermal protection range is 17 to 23 A.
The breaker provides a maximum short-circuit breaking capacity of 50 kA at 400 V AC.
Yes. The breaker incorporates phase failure detection in addition to 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...