Thermal overload relay for MC9b-40a series contactor, current 0.63-1A MT-32 0.63-1A MT-32 0,63-1A

Motor and Circuit Protection – Thermal Relay MT-32

This MT series thermal relay, designed to work with MC9b-40a contactors, provides reliable protection for motors and electrical circuits against overloads. The device effectively protects against the effects of prolonged overloads, phase failures, starting problems, and motor locking. This ensures a longer lifespan of equipment and minimizes the risk of costly failures.

Construction and Application

The MT-32 relay uses a bimetallic construction that reacts to temperature increases caused by excessive current flow. If the set threshold is exceeded, the relay automatically disconnects the circuit, protecting the connected devices. It can be mounted directly under the contactor or separately, using a dedicated mounting base UZ-63L – providing flexibility in choosing a solution for a specific installation. This is particularly important when modernizing existing systems or in the case of limited space in the switchboard.

The MT-32 relay with a current range of 0.63-1A is compatible with MC-9b, MC-12b, MC-18b, MC-22b, MC-32a and MC-40a contactors. This versatility makes it an ideal choice for both new and modernized installations. The three-pole construction ensures uniform protection of all motor phases.

• Wide range of applications: protection of three-phase motors in various industrial and commercial applications.
• Easy installation: direct or dedicated UZ-63L base mounting.
• High reliability: bimetallic construction guarantees precise and stable operation.
• Compatibility: works with MC9b-40a series contactors – simplifying component selection for installations.
• Protection against various disturbances: protects against overloads, phase failures and motor starting problems.