Legrand M 250 Motor Circuit Breaker 3P 0.25kW 0.63-1A

The Legrand M 250 motor circuit breaker is a high-quality 3-pole protection device engineered specifically for electric motors with a power rating of 0.25kW. This unit provides essential safety by monitoring current flow and disconnecting the circuit in the event of an overload or short-circuit, thereby preventing costly damage to motor windings and associated electrical components. With its precise adjustable thermal release range of 0.63-1A, it offers versatile protection tailored to the specific requirements of your motor.

Advantages

This motor circuit breaker stands out due to its robust construction and reliable performance in demanding industrial environments. The adjustable thermal release allows for fine-tuning the protection level to match the exact nominal current of the motor, ensuring optimal operational safety. Its compact design facilitates easy integration into standard electrical cabinets and control panels, saving valuable space while maintaining high standards of electrical protection and motor control efficiency.

Suitable for

• Industrial automation systems
• Commercial machinery and equipment
• HVAC motor control applications
• Conveyor belt systems
• Pump and fan motor protection

When it may not be suitable

This device is not intended for use with motors exceeding the 0.25kW power rating or for applications requiring current settings outside the 0.63-1A range. It is also not suitable for high-voltage distribution networks or residential circuits that do not involve motor-driven loads.

Key specifications

• Number of poles: 3
• Power rating: 0.25kW
• Thermal release adjustment range: 0.63-1A
• Function: Overload and short-circuit protection

How to use

Installation should be performed by a qualified electrician in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within an enclosure. Once mounted, connect the power supply to the input terminals and the motor leads to the output terminals. Use the adjustment dial on the front of the unit to set the thermal release to the motor's rated current as specified on the motor nameplate. After installation, perform a functional test to ensure the breaker operates correctly under load.

What to consider before purchase

• Verify the nominal current of your motor falls within the 0.63-1A range
• Ensure the motor power rating is compatible with 0.25kW
• Check available space in your electrical cabinet for DIN rail mounting
• Confirm compatibility with your existing control system architecture

Usage recommendations

Regularly inspect the circuit breaker for signs of wear or thermal damage. Periodically test the trip mechanism to ensure continued reliability in protecting your motor assets.