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SM1RM0400 Lovato magnetic manual motor starter 2.5-4.0 amp
Lovato SM1RM0400 motor protection circuit breaker with magnetic protection, 4 A rated current and 100 kA breaking capacity at 400 V AC for industrial motor circuits and control panels.
£61.57
Why Choose the Lovato SM1RM0400 Motor Protection Circuit Breaker?
The Lovato SM1RM0400 is a compact and dependable motor protection circuit breaker designed to provide magnetic short-circuit protection for industrial motor circuits, machinery and automation panels. As part of the robust Lovato SM1RM series, it is suited to panel builders, OEM machine manufacturers and maintenance engineers requiring reliable protection in a compact three-pole format.
This breaker uses magnetic protection to disconnect the circuit rapidly during short-circuit fault conditions, helping safeguard motors, cabling and connected control equipment. Its rotary knob control provides clear local operation, while screw terminal connections and DIN rail mounting support straightforward installation inside industrial enclosures.
With a rated current of 4 A and a high 100 kA breaking capacity at 400 V AC, the SM1RM0400 is ideal for smaller motor circuits, machine control panels and industrial automation systems where compact size and dependable fault protection are essential.
Key Advantages
- Compact motor protection circuit breaker for industrial control panels.
- 4 A rated current for motor and control circuit protection.
- 100 kA breaking capacity at 400 V AC for high fault-level installations.
- Magnetic protection for fast short-circuit interruption.
- Rotary knob control for simple and visible operation.
- DIN rail mounting with screw terminal connections for easy installation.
Key Features
- Lovato SM1RM motor protection circuit breaker series.
- 4 A rated current.
- 100 kA Icu at 400 V AC.
- Magnetic short-circuit protection.
- Three-pole construction.
- Rotary knob operating control.
- Screw terminal electrical connection.
- IP20 protection rating.
Reliable Magnetic Protection for Motor Circuits
Motor protection circuit breakers such as the Lovato SM1RM0400 help protect electrical circuits by rapidly disconnecting during short-circuit events. This reduces the risk of damage to motors, cables and downstream control equipment in demanding industrial installations.
The SM1RM series is designed for use in machinery, control panels and automation systems where reliable protection, compact installation and simple operation are required. Its magnetic trip function and rotary operation make it suitable for motor starter assemblies and electrical distribution applications.
Typical Applications
- Industrial motor control circuits.
- OEM machinery and automation systems.
- Motor starter assemblies.
- Conveyors and material handling equipment.
- Electrical control panels and distribution boards.
- Manufacturing and process machinery.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Actuator Type | Rotary | |
| Terminal Type | Screw Terminal | |
| Current Range | 2.5–6.3 A | |
| Application | Magnetic only | |
| Poles | 3-pole | |
| Device Type | Motor protection breaker | |
| Breaking Capacity | 100 kA | |
| Manufacturer | Lovato Electric | |
| Series | SM1RM | |
| Model | SM1RM0400 | |
| Product type | Motor protection circuit breaker | |
| Rated current | 4 A | |
| Protection type | Magnetic | |
| Breaking capacity (Icu) | 100 kA at 400 V AC | |
| Operating voltage | 230–690 V AC | |
| Rated insulation voltage | 690 V AC | |
| Rated impulse withstand voltage | 6 kV | |
| Number of poles | 3 | |
| Control type | Rotary knob | |
| Electrical connection | Screw terminals | |
| Protection rating | IP20 | |
| Mounting type | DIN rail mounting | |
| Dimensions (H × W × D) | approx. 97 × 45 × 91 mm | |
| Weight | approx. 331 g | |
| HS Code | 85362010 |
Frequently Asked Questions
What is the Lovato SM1RM0400 used for?
The SM1RM0400 is used to provide magnetic short-circuit protection for motor circuits, machinery and industrial control panels.
What is the rated current of the SM1RM0400?
The breaker has a rated current of 4 A.
What breaking capacity does this breaker provide?
The SM1RM0400 provides a high 100 kA breaking capacity at 400 V AC.
What type of protection does the SM1RM0400 offer?
This model provides magnetic short-circuit protection for motor and control circuits.
How is the SM1RM0400 installed?
It is designed for DIN rail mounting inside an electrical enclosure or industrial motor control cabinet.
Trusted by Industrial Panel Builders Worldwide
Lovato SM1RM motor protection circuit breakers are widely used by machine builders, panel manufacturers and automation engineers to deliver compact, reliable and high-performance protection for industrial motor circuits.
