Lovato SM1RM0040 motor protection circuit breaker with 0.40 A rated current, magnetic-only protection and 100 kA IEC breaking capacity at 400 V AC.
£102.61
The Lovato SM1RM0040 is a compact and dependable motor protection circuit breaker designed for industrial motor protection, machinery and automation applications. As part of the Lovato SM1RM magnetic protection series, it provides reliable short-circuit protection with a 0.40 A rated current and an impressive IEC breaking capacity of 100 kA at 400 V AC.
Designed specifically for protecting low-current motor circuits, the SM1RM0040 features magnetic-only protection, making it suitable for applications where thermal overload protection is provided separately. Its rotary knob provides clear ON/OFF operation, while the compact DIN rail design enables simple installation inside industrial control panels.
With robust construction, international approvals and compatibility with the extensive Lovato SM1 accessory range, the SM1RM0040 is an excellent choice for machine builders, panel manufacturers and maintenance engineers seeking reliable motor circuit protection.
The Lovato SM1RM0040 is designed to provide dependable magnetic short-circuit protection for motor circuits and industrial control equipment. Its high interrupting capacity allows it to be installed in demanding electrical systems where rapid fault clearance is essential for equipment protection.
The compact design and extensive compatibility with Lovato SM1 accessories make this motor protection circuit breaker suitable for new panel builds as well as maintenance and retrofit projects across a wide range of industrial applications.
| Manufacturer | Lovato Electric |
|---|---|
| Series | SM1RM |
| Model | SM1RM0040 |
| Product type | Motor protection circuit breaker |
| Rated current | 0.40 A |
| Protection type | Magnetic |
| Magnetic tripping | 13 × In |
| Breaking capacity (Icu) at 400 V AC | 100 kA |
| Rated insulation voltage (Ui) | 690 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Rated frequency | 50/60 Hz |
| Control type | Rotary knob |
| Mounting type | 35 mm DIN rail |
| Protection rating | IP20 |
| Mechanical life | 100,000 operations |
| Operating temperature | -20°C to +60°C |
| Weight | approx. 265 g |
| HS Code | 85362010 |
The SM1RM0040 provides magnetic short-circuit protection for low-current industrial motor circuits and control systems.
The Lovato SM1RM0040 has a 0.40 A rated current.
No. The SM1RM0040 is a magnetic-only motor protection circuit breaker and is intended for applications where thermal protection is provided separately.
The SM1RM0040 has an IEC breaking capacity (Icu) of 100 kA at 400 V AC.
It is commonly mounted on a 35 mm DIN rail inside industrial control panels, motor starter assemblies and OEM machinery.
Lovato SM1RM motor protection circuit breakers are trusted by panel builders, machine manufacturers and automation engineers for dependable short-circuit protection, compact installation and reliable industrial performance.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...