TELEMECANIQUE LB1-LC03M17

Telemecanique Thermal Overload Relay 10-16A

Description

The Telemecanique LB1-LC03M17 is a robust 3-pole thermal overload relay designed for reliable motor protection. It mounts directly onto Telemecanique LC-series contactors, providing seamless integration and protection against overloads and phase failures. With its adjustable current setting, it offers flexibility for various industrial applications.

Specifications

• Manufacturer: Telemecanique
• Type: LB1-LC03M17
• Current Setting Range: 10 A to 16 A
• Poles: 3
• Maximum Insulation Voltage (Ui): 660V AC
• Mounting Style: Direct Contactor Mount
• Trip Class: Class 10A

Label Info

• Brand: Telemecanique
• Model: LB1-LC03M17
• For use with: LD-LC Contactors

Application

This thermal overload relay is ideal for protecting AC motors in applications such as pumps, fans, conveyors, and other machinery where reliable overcurrent protection is essential.

Country of Origin

Made in France.

CO2 Impact

By purchasing this pre-owned component, you are contributing to a circular economy and helping to avoid approximately 6.0 kg of CO2 emissions associated with the production of a new unit.

Availability

This is an obsolete item, but it is available from our stock. Order now from spareparts2day for expert support and fast delivery.

FAQ

What contactors is the LB1-LC03M17 compatible with?

This thermal overload relay is designed for direct mounting on Telemecanique (now Schneider Electric) contactors from the LC1-D09 up to the LC1-D38 series.

How do I set the trip current on this device?

The trip current is set using the blue dial on the front of the unit, labeled ‘I>’. You can adjust it within the range of 10 to 16 Amperes to match your motor’s full load current (FLA).

Is this a direct replacement for a modern Schneider LRD relay?

No, while functionally similar, the LB1 series is an older, obsolete generation. A modern Schneider Electric LRD series relay (like the LRD21) is the recommended replacement, but check the dimensions and mounting compatibility for your specific installation, as they may differ slightly.

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Last Update: Friday, March 13, 2026