Telemecanique Thermal Overload Relay 0.25-0.40A LB1-LC03M

Description

The Telemecanique LB1-LC03M is a three-pole thermal overload relay designed for the protection of AC motors. It provides reliable differential protection against phase failure and overloads. With an adjustable current setting from 0.25A to 0.40A, it offers precise calibration for small motor applications. This component is engineered for direct mounting on Telemecanique LC1-D series contactors, creating a compact and efficient motor starter.

Specifications

• Manufacturer: Telemecanique (Schneider Electric)
• Model: LB1-LC03M
• Type: Thermal Overload Relay
• Number of Poles: 3
• Thermal Protection Adjustment Range: 0.25 to 0.40 A
• Rated Insulation Voltage (Ui): 660V AC
• Mounting Style: Direct Contactor Mount
• Compatible Contactors: LC1-D09, LC1-D12, LC1-D18
• Trip Class: Class 10

Label Info

• Brand: Telemecanique
• Part Number: LB1-LC03M
• Current Range: 0.25-0.40
• Max Voltage: 660V AC

Application

This overload relay is ideal for protecting small induction motors in various industrial applications, including conveyor systems, pumps, fans, and other machinery where reliable overload protection is critical to prevent motor damage and downtime.

Country of Origin

Made in France.

CO2 Impact

By purchasing this pre-owned item, you help save approximately 6.0 kg of CO2, which is comparable to driving a car for 30 km. Choosing refurbished components contributes to a more sustainable industrial environment.

Availability

This is a legacy component, available from our stock. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?

What contactors is the LB1-LC03M compatible with?

This thermal overload relay is designed for direct mounting on Telemecanique (Schneider Electric) contactors from the LC1-D series, specifically models like LC1-D09, LC1-D12, and LC1-D18.

What is the trip class of this overload relay?

The LB1-LC03M is a Class 10 thermal overload relay, meaning it will trip within 10 seconds when subjected to a current six times its set value, providing standard motor protection.

How do I reset the LB1-LC03M after a trip?

This model features a manual reset function. After the bimetallic strips have cooled down, you can press the blue reset button on the front of the unit to restore the circuit. An automatic reset version would have a different model number.

PLC2DAY is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.

Last Update: Friday, March 13, 2026