Schneider Electric LB1-LD03P55 Relay Load Starter Protection

Description:

The Telemecanique LB1LD03P55 Relay Load Starter Protection Module is used in industrial motor control systems to provide fixed thermal overload and magnetic short-circuit protection for compatible TeSys Integral 63 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 LB1LD03P55 Relay Load Starter 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: LB1LD03P55 (LB1-LD03P55)
• Product Type: Thermal-Magnetic Protection Module
• Product Series: TeSys Integral 63 (LB1LD)
• Number of Poles: 3
• Function: Fixed thermal overload and magnetic short-circuit protection for standard motors
• Thermal Protection Adjustment Range: 28–40 A
• Magnetic Trip Setting: Fixed at 15 × maximum thermal current (approximately 600 A)
• Thermal Overload Class: Class 20
• Rated Operational Voltage (Ue): 690 VAC
• Rated Insulation Voltage (Ui): 690 VAC
• Utilization Category: AC-43
• Motor Power Rating: 9 kW at 220–240 VAC; 22 kW at 400–440 VAC; 25 kW at 480–525 VAC; 33 kW at 600–690 VAC
• Protection Type: Thermal overload, magnetic short-circuit, and phase imbalance protection
• Compatible Devices: TeSys Integral 63 contactor breakers (LD1LD030, LD4LD030, and LD5LD030 series)
• IP Rating: IP20B
• Standards: IEC 60947-4 Type 2, NF C 63-650
• Net Weight: Approximately 0.78 kg
• Application Environment: Industrial motor control, automation systems, and electrical control panels.

Common Replacements:

• Schneider Electric LB1LD03P55 Thermal-Magnetic Protection Module
• Siemens SIRIUS 3RV2 Motor Protection Circuit Breaker
• Allen-Bradley Bulletin 140M Motor Protection Circuit Breaker