Telemecanique LB1LC03M32 Thermal Overload Relay

Description

The Telemecanique LB1LC03M32 is a 3-pole thermal overload relay designed to protect motors from overcurrents, phase loss, and prolonged starting times. It offers a wide, adjustable current setting range from 23A to 32A, making it suitable for a variety of motor applications. This relay is engineered for direct mounting onto Telemecanique LC1-D series contactors, providing a compact and efficient motor starter solution.

Specifications

• Manufacturer: Telemecanique (Schneider Electric)
• Model: LB1LC03M32
• Product Type: Thermal Overload Relay
• Number of Poles: 3
• Thermal Protection Adjustment Range: 23 to 32 A
• Rated Insulation Voltage (Ui): 690V AC
• Trip Class: Adjustable Class 10 / Class 20
• Mounting: Direct mount on contactor

Label Info

• Brand: Telemecanique
• Model: LB1 LC03M..
• Ui: 690V a.c. max.
• Certifications: UL, SP, NOM, CE

Application

This relay is ideal for protecting AC motors in industrial environments, including applications such as pumps, fans, conveyors, and machine tools, particularly where reliable overload protection is critical.

Country of Origin

Made in France.

CO2 Impact

Opting for this pre-owned component avoids the emission of approximately 6 kg of CO2 compared to manufacturing a new one. This choice supports sustainable industrial practices.

Availability

This item is a reliable, tested component from our inventory. Order now from PLC2Day for expert support and fast delivery.

FAQ

What contactors is the LB1LC03M32 compatible with?

The LB1LC03M32 is designed for direct mounting on Telemecanique (Schneider Electric) TeSys D-line contactors, specifically models LC1-D09, LC1-D12, LC1-D18, LC1-D25, LC1-D32, and LC1-D38.

On the side of the relay, there is a small dial labeled "CLASS". Using a flat-head screwdriver, you can turn this dial to select either the Class 10 or Class 20 trip curve. Class 10 is for standard motor starting conditions, while Class 20 is for heavy-duty applications with longer start times.

Yes, the LB1 series features a selectable manual/automatic reset function. This is typically controlled by a blue push-button on the front of the unit. Pushing it in selects manual reset, while pulling it out selects automatic reset. It also features a red 'Stop' button and a yellow 'Trip' indicator.

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Last Update: Friday, March 13, 2026