LB1LC03M

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The Telemecanique LB1LC03M is a robust thermal-magnetic protection module designed to safeguard electric motors from potential damage due to overload and phase imbalance. This module is an integral part of the Integral 32 range and is characterised by its 3-pole design, ensuring comprehensive protection for three-phase electrical systems.

With a motor power capacity ranging from 7.5 kW at 220-240 V AC up to 25 kW at 600-690 V AC, the LB1LC03M is versatile and suitable for a variety of industrial applications. Its magnetic tripping current is finely adjustable between 2.4 to 4.8 A, allowing for precise protection settings in accordance with IEC standards.

The LB1LC03M boasts a substantial breaking capacity of 50 kA across a range of voltages, from 220 V AC up to 690 V AC, providing reliable performance in demanding conditions. The thermal protection adjustment range is broad, from 0.1 A to 18 A, which can be set to ensure optimal protection without derating, even in environments with temperatures ranging from -20°C to 70°C.

This protection module is compliant with IEC 60947-4 type 2 and NF C 63-650 standards, ensuring it meets rigorous quality and performance criteria. The LB1LC03M is a compact and efficient solution for motor protection, with a weight of just 0.4 kg and compatibility with the LB1LC code, making it a preferred choice for professionals seeking dependable motor protection solutions.
Specification Description
Part Number LB1LC03M
Manufacturer Telemecanique
Product Type Thermal-magnetic protection module
Poles Description 3P (3 poles)
Number of Protected Poles 3
Motor Power kW 15 kW at 400...415 V AC 50/60 Hz, 15 kW at 440 V AC 50/60 Hz, 25 kW at 600...690 V AC 50/60 Hz, 7.5 kW at 220...240 V AC 50/60 Hz, 18.5 kW at 480...525 V AC 50/60 Hz
Utilisation Category AC-43
Magnetic Tripping Current 2.4...4.8 A +/- 20 % conforming to various IEC standards
[Ue] Rated Operational Voltage 690 V
Breaking Capacity 50 kA at various voltages ranging from 220 V AC to 690 V AC
Thermal Protection Adjustment Range 0.1...12 A minimum at -20...60 °C without derating, 0.16...18 A maximum at -20...70 °C with derating
Protection Type Phase imbalance
Thermal Overload Class Class 10
Product Weight 0.4 kg
Compatibility Code LB1LC
Standards IEC 60947-4 type 2, NF C 63-650

What is the function of the LB1LC03M protection module?

The LB1LC03M is a thermal-magnetic protection module designed to protect electric motors from overloads and phase imbalances. It ensures the safe operation of the motor by interrupting the current in case of a fault.

Can this protection module be used with different motor power ratings?

Yes, the LB1LC03M can be used with various motor power ratings, including 15 kW at 400...415 V AC, 15 kW at 440 V AC, 25 kW at 600...690 V AC, 7.5 kW at 220...240 V AC, and 18.5 kW at 480...525 V AC.

What are the tripping characteristics of this module?

The module has a magnetic tripping current of 2.4...4.8 A +/- 20%, conforming to several IEC standards. This feature helps in protecting the motor by tripping in the event of short-circuit conditions.

What is the breaking capacity of this module?

The LB1LC03M has a breaking capacity of 50 kA at various voltages, including 440 V AC, 220...240 V AC, 400...415 V AC, 600...690 V AC, and 500 V AC.

How is the thermal protection adjustment range defined for this module?

The thermal protection adjustment range for the module is 0.1...12 A minimum at -20...60 °C without derating and 0.16...18 A maximum at -20...70 °C with derating.

What standards does the LB1LC03M comply with?

The module complies with IEC 60947-4 type 2 and NF C 63-650 standards, ensuring its reliability and quality for industrial applications.

What is the utilisation category of this protection module?

The utilisation category of the LB1LC03M is AC-43, which specifies the conditions for which the module is designed, including the type of load and duty cycle.

What is the weight of the LB1LC03M?

The weight of the module is approximately 0.4 kg, making it a lightweight component for its functionality.

What type of protection does the LB1LC03M offer?

The module offers phase imbalance protection and thermal overload protection, which are critical for maintaining motor integrity and performance.

Is the LB1LC03M compatible with other devices?

The module is compatible with devices that match the compatibility code LB1LC, allowing for integration with compatible motor control systems.

  • Motor control in industrial automation systems
  • Protection of three-phase motors from overload and phase imbalance
  • Integration into motor starter assemblies for thermal and magnetic protection
  • Use in control panels for machinery in manufacturing plants
  • Application in HVAC systems for compressor motor protection
  • Implementation in pump control systems for thermal overload safety
  • Utilisation in material handling equipment for motor safety
  • Deployment in agricultural machinery for motor circuit protection
  • Installation in packaging machines to safeguard motor operation
  • Inclusion in conveyor systems to prevent motor burnout due to overcurrent

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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