Thermal overload relay for MC130a-150a series contactor, current 63-85A MT-150 63-85A

Thermal overload relay for contactor – protection of motors and installations

The MT-150 thermal overload relay, designed to work with MC130a-150a series contactors, is a reliable device used to protect electric motors from overload. It provides effective protection against damage caused by prolonged current draw, which translates to a longer motor life and minimized repair costs. It is a key element of any electrical installation powering motors.

Construction and application

The MT-150 relay is designed for direct mounting on the MC130a-150a contactor. Its main task is to monitor the current flowing through the motor and disconnect the circuit if the set threshold is exceeded. The set current range for this model is 63-85A, making it an ideal solution for a wide range of industrial and commercial applications. Because it reacts to the temperature rise of the motor windings, it provides precise and effective protection.

Key features and benefits

• Wide adjustment range: the ability to set the tripping current in the range of 63-85A allows you to adapt the relay to specific application needs.
• Direct mounting: simple mounting on the MC130a-150a contactor saves time and space in the switchgear.
• High reliability: solid construction and the use of high-quality materials guarantee long-lasting and trouble-free operation of the device.
• Compliance with standards: meets safety and performance requirements, ensuring compliance with applicable regulations (e.g., flame resistance according to UL 94: V0 and IEC 695-2-1: 960°C).
• Versatility: suitable for use in various industrial environments where protection of electric motors against overload is required.
• Weight: 0.67 kg – compact size facilitates integration with existing systems.
• Rated operating voltage (Ue): 690V – ensures compatibility with most standard electrical installations.
• Rated insulation voltage (Ui): 690V – guarantees safe operation in demanding conditions.
• Rated frequency: 50/60Hz - possibility of operation in different power systems.

Thanks to these features, the MT-150 thermal overload relay is a reliable and effective solution for anyone who cares about the safety and efficiency of their electrical equipment.