Thermal overload relay for MC9b-40a contactor series MT current 0.63-1A MT-32 5-8A

Motor and Circuit Protection – Thermal Relay MT-32

This thermal relay, designed to work with MC9b-40a series contactors, is a key element in protecting electrical installations. Its function is to protect AC motors and circuits from the effects of overloads, phase asymmetry, long-term starts, and rotor blockage. This ensures reliable operation of devices and minimizes the risk of failure.

Construction and Application

The MT-32 relay utilizes a bimetallic operating principle, guaranteeing precise and stable reaction to current changes. The possibility of mounting directly under the contactor or on a separate UZ-63L base provides installation flexibility and adaptation to different working conditions. This solution is appreciated by both installers and end-users.

Key Features and Benefits

• Wide adjustment range: The MT-32 relay in the 0.63-1A version allows for precise setting of the tripping current, adapting to the characteristics of the protected circuit.
• Protection against various disturbances: Protects not only against overload but also against phase errors and engine starting problems.
• Compatibility: Designed to work with MC9b-40a contactors, making selection and installation easier.
• Installation flexibility: The possibility of direct or dedicated UZ-63L base mounting increases installation convenience.
• Durability and reliability: Solid construction ensures long-lasting and trouble-free operation in various environmental conditions.
• Release class: MT series relays are characterized by release class 10, which means a quick response to overloads.
• Signaling: Has one normally closed (NC) contact and one normally open (NO) contact for signaling the relay status.

The MT-32 thermal relay is a reliable solution for ensuring the safety and efficiency of electric motors in a wide range of industrial and commercial applications.