Telemecanique LB1-LB03PO3 Overload Relay Protection Module

Description:

The Telemecanique LB1LB03P03 Overload Protection Module is used in industrial motor control systems to provide adjustable thermal overload and magnetic short-circuit protection for compatible INTEGRAL 18 self-protected motor starters. Commonly installed in motor control centers (MCCs), conveyor systems, pumps, compressors, and industrial control panels. Maintenance teams, OEMs, and system integrators use this protection module for repair, replacement, retrofit, or industrial automation maintenance.

Applications:

The Telemecanique LB1LB03P03 Overload Protection Module is commonly used in industrial facilities to provide dependable motor protection in equipment such as conveyors, pumps, compressors, packaging machines, HVAC systems, material handling equipment, robotics, production lines, MCCs, and industrial control panels where dependable overload protection, reliable machine control, process monitoring, and electrical interlocking are essential.

Technical Specifications:

• Manufacturer: Telemecanique / Schneider Electric
• Model / Part Number: LB1LB03P03 (LB1-LB03P03)
• Product Type: Thermal-Magnetic Overload Protection Module
• Product Series: INTEGRAL 18 (LB1LB)
• Number of Poles: 3
• Function: Adjustable thermal overload and magnetic short-circuit protection for standard motors
• Thermal Protection Adjustment Range: 0.25–0.40 A
• Magnetic Trip Setting: Fixed at 15 × maximum thermal current
• Thermal Overload Class: Class 10 (Ambient Compensated)
• Rated Operational Voltage (Ue): 600 VAC
• Maximum Rated Voltage: 660 VAC
• Maximum Continuous Current: Up to 18 A (series capability)
• Protection Type: Thermal overload, magnetic short-circuit, and phase imbalance protection
• Temperature Compensation: -20°C to +55°C
• Compatible Devices: Telemecanique INTEGRAL 18 self-protected combination motor starters
• Standards: IEC 947-4 Type 2, IEC 947-1/2/4, NF C 63-650, NF C 63-120
• Product Weight: Approximately 0.32 kg (0.71 lb)
• Application Environment: Industrial motor control, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LB1LB03P03 Thermal-Magnetic Overload Protection Module
• Siemens SIRIUS 3RV2 Motor Protection Circuit Breaker
• Allen-Bradley Bulletin 140M Motor Protection Circuit Breaker