Thermal overload relay for MC75a-100a series contactor MT current 45-65A MT-95 45-65A

Thermal overload relay for contactor – protection of motors and circuits

The MT-95 45-65A thermal overload relay is a protective device designed to work with MC75a-100a series contactors. Its task is to protect electric motors from overload, which allows extending their lifespan and avoiding costly downtime. This device finds application in a wide range of electrical installations, both in industry and in commercial construction.

Construction and principle of operation

The MT-95 relay uses the principle of a bimetallic tripping element. In the event of exceeding the set rated current, this element deforms and causes disconnection of the contactor control circuit, disconnecting the motor power supply. Thanks to this, even short-term overloads will not lead to damage to the motor windings. The device's construction ensures reliable operation and long life.

Key features and benefits

• Current range: The MT-95 45-65A relay is designed to protect circuits with a rated current of 45 to 65 amps. This makes it a universal solution for many applications.
• Compatibility: It has been designed to work with MC75a-100a series contactors, which guarantees the correct operation of the entire system.
• Release class: Different release classes are available (e.g. Class 10, Class 20), which allow adapting the relay's operating characteristics to the specifics of the protected load. Class 10 is characterized by a faster reaction to overloads than class 20.
• Application in various systems: The possibility of mounting on a DIN rail facilitates integration with existing electrical installations.
• Protection against damage: Protects motors against the effects of overloads, such as winding overheating and reduced lifespan. This translates into savings related to repairs or motor replacement.
• Safety: Ensures safe operation of the electrical installation by quickly disconnecting the power supply in the event of a failure.
• Solid construction: Made of high-quality materials guarantees the reliability and durability of the device even in difficult working conditions.

Let us remember that the correct selection of a thermal overload relay is crucial to ensure effective protection of the electric motor. The motor power, rated current and operating conditions of the installation should be taken into account.