Thermal overload relay for MC50a-65a series contactor, current 24-36A MT-63 24-36A

Motor Protection with Thermal Relay MT-63

The MT-63 thermal relay is a reliable device designed to protect electric motors from overload. Designed to work with MC-50a and MC-65a series contactors, it provides effective protection in electrical installations. This is a key safety element that helps avoid costly failures and downtime in machine operation.

Construction and application

The MT-63 relay is an element mounted directly under the contactor or using a dedicated UZ-63L mounting base. This allows for flexible adaptation to specific installation conditions. Its main task is to monitor the current flowing through the motor and trigger it when the permissible value is exceeded, protecting the winding from overheating and damage. Thanks to this, the device finds application in a wide range of industrial and commercial applications – from simple devices to advanced automation systems.

Functionality and characteristic features

The MT-63 thermal relay offers three setting levels, allowing precise adjustment of the trigger threshold to the motor load characteristics. It also has a trip indicator, which facilitates identification of the cause of the circuit disconnection. In addition, it is equipped with 1NO+1NC auxiliary contacts, which can be used to signal the device status or control other installation elements. Manual or automatic reset capability provides flexibility in operation and adaptation to specific application requirements. It is worth noting the current setting range of 24-36A, which makes it an ideal solution for medium-power motors. The device operates in a temperature range of -5°C to 60°C and has an IP20 degree of protection.