Thermal Overload Relay

Thermal Overload Relay

The LS ELECTRIC Thermal Overload Relay is a reliable motor protection solution designed to protect motors from overload, phase loss, and locked-rotor conditions in motor circuits. With a wide current setting range and Class 10 A/20 trip characteristics, the relay supports flexible application across various motor capacities and load conditions. Field-friendly operating features improve inspection and maintenance efficiency. Designed for reliable coordination with magnetic contactors, the thermal overload relay provides protection performance for industrial motor control applications.


Rated Operational Voltage
690 V AC
Current Setting Range
0.1 – 800 A
Trip Class
Class 10A/20

Key Features

01

Motor Protection

Protects motors from overload, phase loss, and locked-rotor conditions. Prevents motor damage and improves equipment operating stability.

02

Flexible Settings and Applications

Provides a current setting range of 0.1 A to 800 A. Supports application across various motor capacities and load conditions.

03

Reliable Trip Protection and Response

Supports Class 10A/20 trip characteristics. Provides reliable response for general loads and long-starting-load applications.

04

Operational Convenience

Field inspection and reset functions help simplify maintenance. Easy to configure as a motor starter when combined with a magnetic contactor.

Reach out to our dedicated specialist for technical inquiries and product support.

Send an Inquiry

Lineup

Item

MT-12 / 32

MT-63 / 95 / 150

MT-225 / 400 / 800

Pole 3 Pole 3 Pole 3 Pole
Trip Class Class 10A / 20 Class 10A / 20 Class 10A / 20
Terminal Type Screw Screw/Lug Screw
Operational Voltage 690 V 690 V 690 V
Insulation Voltage 690 V Up to 690 V 690 V
Impulse Withstand Voltage 6 kV 6 kV 6 kV
Current Setting Range 0.1~40 A 4~150 A 65~800 A

Downloads

Showing 1-5 of 9 results

Certificates

MT-12, MT-32, MT-63, MT-95, MT-150, MT-225, MT-400, MT-800 (2H/3H/3K/3D)

  • [ABS]26-0548830-PDA_MT-12_cert.pdf
Certificates

MT (A2L REFRIGERANTS)

  • E206826-20250617-CertificateofCompliance.pdf
Certificates

GTK-12M, GTH-12M, MT-12/3H, MT-12/3K, MT-12/3D

  • E206826-Vol1-Sec7.pdf
Certificates

MT Series MT, followed by –32, –63, –95 or -150, followed by /2H, /3H, /3K, /F2, /F3, /FK /3D, /FD, UZ Series UZ, followed by –32, -63, -95 and –150

  • E206826-Vol1-Sec9-cert.pdf
Certificates

Models MT followed by -225, -400, -800, may be followed by /2H, /3H, /3K or /3D

  • E206826-Vol3-Sec1-20250625_Certificate of Compliance.pdf

Markets

Discover how our real-time monitoring and precise control capabilities drive operational efficiency, ensure compliance,
and maintain 24/7 continuity across the most demanding global markets.

Consult with an LS ELECTRIC Expert

Have a general question not related to quotes or technical service? Leave us a message and our team will get back to you.

Send a Message