Motor circuit-breaker Legrand M250 3P 2.5 kW 4–6.3 A 1Z/1R model 606828

Legrand M250 motor circuit-breaker model 606828 is a three-pole protection and control device designed for use with small three-phase motors up to 2.5 kW. The unit provides adjustable thermal-magnetic protection with an adjustable current range of 4–6.3 A and integrates auxiliary contacts for control and signaling. It is intended for motor overload protection, start/stop control and short-circuit interruption in industrial and commercial electrical panels.

Advantages

The motor circuit-breaker combines overload and short-circuit protection in a single compact device, reducing panel space while simplifying wiring. Adjustable thermal tripping allows matching protection to the specific motor full-load current, and the built-in auxiliary contacts (one normally closed and one normally open) facilitate direct connection to control circuits and status monitoring. Robust design and compatibility with standard mounting and accessories make it suitable for retrofit and new installations.

Suitable for

• Protection and control of three-phase motors up to 2.5 kW
• Start/stop control circuits in industrial and commercial panels
• Overload and short-circuit protection in machinery and HVAC systems
• Replacement or upgrade in existing motor control centers

Key specifications

• Poles: 3-pole protection and switching
• Rated motor power: up to 2.5 kW
• Adjustable current range: 4–6.3 A (thermal trip setting)
• Trip type: thermal-magnetic (overload and short-circuit protection)
• Auxiliary contacts: 1 normally closed (NC) and 1 normally open (NO)
• Mounting: panel/rail-compatible compact housing
• Application: motor protection, start/stop control, short-circuit interruption

How to use

Install the device in the electrical panel according to local wiring regulations and the manufacturer's installation instructions, ensuring correct orientation and secure mounting. Connect the three-phase supply and motor leads to the corresponding terminals and wire the auxiliary contacts into the control circuit for start/stop or signaling functions. Set the thermal trip dial to the motor's rated full-load current within the 4–6.3 A adjustment range. After installation, perform an operational check by initiating a controlled motor start and verifying correct tripping behavior and auxiliary contact operation.

Usage recommendations

For reliable protection, verify motor nameplate current before adjusting the trip setting and ensure proper coordination with upstream protection devices. Periodically inspect terminals for tightness and signs of overheating, and test auxiliary contacts as part of routine maintenance. Use the device within its rated thermal and short-circuit limits and follow applicable safety standards when performing installation or service.

Legrand M250 motor circuit-breaker model 606828 provides compact, adjustable protection for small three-phase motors, with integrated auxiliary contacts for control and signaling in industrial and commercial applications.