MS132-12 Motor switch disconnector 1SAM350000R1012

Motor protection circuit breakers – reliable protection for your drives

Motor protection circuit breakers are a key element in protecting electric motors, safeguarding them against overload and short circuit. The MS132-12 model, with a rated current of 12A, is a compact device in a housing 45 mm wide, designed for use in three-phase installations with a rated voltage of 250…690 V. It provides effective protection with a rated power of up to 5.5 kW for AC-3 at 400 V.

This circuit breaker combines thermal and magnetic functions, guaranteeing a quick response to various types of failures. Characteristic C allows it to react more slowly to short current surges, making it well-suited for starting devices with a motor. Additionally, it has a built-in phase failure protection function, increasing the safety of the installation. The breaking capacity of up to 100 kA at 400 V AC ensures protection even in the event of high short-circuit currents.

Key features and benefits:

• Versatility: Can be used in both single-phase and three-phase applications.
• Compact dimensions: A width of only 45 mm makes it easy to install in tight spaces.
• High reliability: Thermal and magnetic protection guarantees effective motor protection.
• Wide adjustment range: Adjustable current range (8…12 A) allows for precise adaptation to the needs of a specific application.
• Phase failure protection: Protects the motor from damage caused by the absence of one of the supply phases.
• High breaking capacity: Up to 100 kA at 400 V AC ensures installation safety in the event of a short circuit.
• Easy installation: Screw connection of the main contacts ensures convenient and secure connection of the wires.

Applications:

The MS132-12 circuit breaker is ideal for protecting electric motors in various industrial and commercial applications, such as:

• Pumps and fans
• Compressors
• Blowers
• Agricultural machinery
• HVAC systems (heating, ventilation, and air conditioning)
• Material transport systems

This circuit breaker is particularly recommended where reliable motor protection in a compact size and the ability to precisely adjust the protection parameters to the specifics of the application are required. Power losses of only 6.9 W minimize energy losses during operation. The IP20 degree of protection provides basic protection against touch and access to the inside of the device.