Thermal overload relay for MC130a-150a series contactor, current 95-130A MT-150 95-130A

Thermal overload relay for MC series contactors

The MT-150 thermal overload relay, designed to work with MC-130a and MC-150a contactors, is a protective element for electric motors against overload. It provides reliable circuit protection by reacting to temperature increases caused by excessive current draw. It is a key element in control systems that helps avoid costly failures and downtime.

Protection and application

The MT-150 relay is designed to operate in a current range of 95-130A, making it an ideal solution for motors with power adapted to this range. Its construction based on the thermal principle allows for precise monitoring of the motor load and a quick response in the event of exceeding the permissible values. Thanks to this, the installer can be sure that the motor is adequately protected against damage caused by overload.

• Application: This relay finds application in a wide spectrum of electrical devices and installations where protection of electric motors against overload is required – from simple industrial applications to more advanced automation systems.
• Compatibility: Direct fit for MC-130a and MC-150a contactors simplifies installation and ensures proper system operation.
• Alternative: Can replace obsolete GTH-150 models.

Operating characteristics

The MT-150 relay is characterized by a solid construction and high reliability. Its operation is based on a bimetallic thermal element that bends under the influence of temperature increase caused by current flow. After exceeding the set triggering threshold, the triggering mechanism causes disconnection of the contactor control circuit, cutting off the motor power supply. This simple but effective solution provides effective protection against damage resulting from overload.