Thermal overload relay for MC130a-150a series contactor, current 80-105A MT-150 80-105A

Thermal overload relay for contactor – protection of motors and circuits

The MT-150 80-105A thermal overload relay is a reliable device used to protect electric motors and circuits from overloads. Designed to work with MC-130a and MC-150a series contactors, it provides effective protection against damage caused by excessive load, phase failures, prolonged starts or motor blockage. This is a key element in power systems that minimizes the risk of downtime and costly repairs.

Construction and application

The MT-150 relay is a three-phase device designed for direct mounting on the contactor or separately using a dedicated mounting base. Its construction based on the bimetallic principle of operation guarantees precise response to current changes. Therefore, in the event of exceeding the set threshold, the relay automatically switches off the circuit, protecting the connected devices. The current adjustment range of 80-105A makes it a universal solution for various industrial applications.

Key features and benefits

• Wide range of applications: Compatible with MC-130a and MC-150a contactors, which facilitates integration into existing installations.
• Precise protection: Bimetallic construction ensures accurate detection of overloads and a quick response.
• Durable construction: Made of high-quality materials, which guarantees reliability and long life.
• Easy installation: Direct mounting or using a dedicated base increases installation flexibility.
• Meets safety standards: UL and CE certificates confirm compliance with international quality and safety standards.
• Compact dimensions: Allows installation in limited space (95×109×113 mm).
• Phase loss protection: Additional function protecting the motor against operation in conditions of voltage asymmetry.
• Manual or automatic reset: Allows you to adapt the relay's operation to specific application needs.

The MT-150 thermal overload relay is an investment in the safety and reliability of the power system. It provides effective protection of electric motors against damage caused by overloads, which translates into reduced repair costs and production downtime. It is an ideal solution for both professional installers and end-users looking for reliable protection of their devices.