Thermal overload relays are protection devices required in various motor starter combinations. L&T Electrical & Automation’s range of contactors complements the range of thermal overload relays. These are available for various DOL/ Star delta combinations. The overload relays have a built-in sensitive mechanism that protects the motor from overload and single phasing.

Features of our thermal overload relays

Type RTX & MN-suitable for MNX contactors

• Ratings: RTX Relay 0.23A-41A
• MN Relay 0.2A-570A
• Inbuilt single phasing protection
• Suitable for direct/separate mounting
• Built-in ‘START’ and ‘OFF / RESET’ push buttons
• Auto and manual reset modes
• Ambient temperature compensation: -5 C to +55 C
• Electrically separate NO contact
• Conformance to IEC 60947-4-1 and IS/IEC 60947-4-1

Type RTO- suitable for MO contactors 

• Ratings: 0.23A - 110A
• Phase failure sensitive
• Visual status indication
• Sealable transparent cover
• Auto/manual reset function
• Ambient temperature compensated
• Conforms to IEC 60947-4-1 & IS/IEC 60947-4-1