Thermal overload relay for MC9b-40a series contactor MT current 0.25-0.4A MT-32 0.25-0.4A MT-32 0,25-0,4A

Motor and Circuit Protection – Thermal Relay MT-32

The MT-32 thermal relay is a reliable element for protecting electrical installations, designed to work with MC9b-40a series contactors. The device protects motors and circuits against the effects of overloads, phase failures, and prolonged starting currents. Its bimetal construction ensures precise and effective response to irregularities, minimizing the risk of damage and downtime.

This model, in the current range of 0.25-0.4A, is particularly useful in applications requiring precise selection of protection for smaller motors or delicate circuits. The possibility of mounting directly under the contactor or using a dedicated UZ-63L base provides installation flexibility and adaptation to individual needs.

Construction and application

The MT-32 relay is a key element in overload protection systems. Its operation is based on the use of a bimetal, which heats up and bends under the influence of the flowing current, causing the circuit to disconnect when the set tripping threshold is exceeded. This ensures that the protected device is disconnected from the power supply before it is damaged.

The device finds application in:

• Protection of electric motors (single-phase and three-phase)
• Protection of electrical circuits against overloads
• Industrial automation systems
• Building and commercial installations
• Applications requiring high reliability and safety

Advantages of use

• Wide adjustment range: The relay allows for precise adjustment of the tripping threshold to the specifics of the protected circuit.
• Compatibility: Designed to work with MC9b-40a contactors, guaranteeing seamless integration with existing installations.
• Easy installation: Direct mounting or using the UZ-63L base facilitates installation and servicing.
• High reliability: The use of high-quality materials and precise construction ensure long-lasting and trouble-free operation of the device.
• Tripping indicator: Allows for quick identification of the cause of the circuit disconnection and facilitates troubleshooting.
• Manual and automatic reset: Allows you to choose the method of restoring the device to operation after the protection has activated.
• Compact dimensions: Allows for mounting in limited space.

The MT-32 thermal relay is an investment in the safety and reliability of your electrical installation – for both professionals and end users.