Thermal overload relay for MC9b-40a series contactor, current 1-1.6A MT-32 1-1.6A MT-32 1-1,6A

Thermal overload relay for contactor – reliable motor protection

This thermal overload relay, designed to work with MC9b-40a series contactors, is a key element in protecting electric motors from overloads. Its function is to monitor the current flowing through the motor and, in the event of exceeding the set threshold (in the range of 1-1.6A), to disconnect the circuit, protecting it from damage. This is an ideal solution for both professional installers and end users who value the safety and reliability of their devices.

Construction and application

The MT-32 relay is a three-pole device, designed for direct mounting on the MC9b-40a contactor or – optionally – on a dedicated UZ-32 base (available separately). This allows for the creation of a compact and efficient protection system. The device finds application in a wide spectrum of electrical installations where motor protection against the effects of overloads, phase failures and long-term starts is required. Its versatility makes it suitable for various working conditions.

Key features and benefits

• Wide adjustment range: Rated current in the range of 1-1.6A allows you to match the relay to different types of motors and loads.

• High reliability: Construction based on a bimetallic mechanism ensures stable and precise operation in variable conditions.

• Compact dimensions: Dimensions 45 x 75 x 90 mm make it easy to mount even in tight spaces.

• Compliance with standards: The device meets the required safety and quality standards, guaranteeing safe operation.

• Protection against phase failures: Protects the motor not only against overload, but also against voltage asymmetry in the power supply network.

• Ambient temperature compensation: Ensures correct operation of the relay in a wide range of ambient temperatures (-5°C to +40°C).

• Reset capability: Has the ability to manually or automatically reset after the protection has activated.

• Universal mounting: The possibility of mounting directly on the contactor or on a dedicated UZ-32 base increases installation flexibility.

Technical data

• Manufacturer: LS Electric / Aniro Sp. z o.o.

• Catalog number: MT-32 1-1,6A

• Rated operating voltage AC Ue: 690V

• Rated insulation voltage Ui: 690V

• Maximum impulse withstand voltage Uimp: 6kV

• Network frequency f: 50/60 Hz

• Weight: 0.17 kg

• Current adjustment range: 1 - 1.6 A

• Release class: 10

Remember to comply with applicable regulations during installation!