Why Choose the Lovato 11B50000440 Contactor?
The Lovato 11B50000440 is a heavy-duty three-pole industrial power contactor designed for dependable control of large three-phase motors and high-current electrical loads. As part of the robust Lovato B500 contactor series, it combines a high switching capacity with a versatile 440–480 V AC/DC control coil for integration into demanding industrial control systems.
Engineered for motor control centres, switchgear assemblies and large industrial machinery, this contactor provides reliable electrical and mechanical performance under intensive operating conditions. Its three normally open main contacts use durable bolt connections suitable for high-current power circuits, while screw mounting supports secure installation inside industrial panels.
With a conventional free-air thermal current rating of 700 A and an IEC AC-3 operational rating of 520 A / 290 kW at 400 V, the Lovato 11B50000440 is ideal for controlling large pumps, compressors, conveyors and process machinery.
Key Advantages
- Heavy-duty three-pole industrial power contactor.
- 700 A AC-1 current rating at ambient temperatures up to 40 °C.
- 520 A AC-3 operational current for demanding motor-control applications.
- Suitable for motors rated up to 290 kW at 400 V.
- 440–480 V AC/DC operating coil for flexible control-system integration.
- High insulation and impulse-withstand ratings for industrial electrical systems.
Key Features
- Lovato B500 power contactor series.
- Three normally open main power poles.
- 440–480 V AC/DC control coil.
- 700 A IEC AC-1 operational current at 40 °C.
- 520 A / 290 kW IEC AC-3 rating at 400 V.
- 1000 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Bolt-connected main terminals and screw-mounted construction.
Reliable High-Current Motor Control
Industrial contactors such as the Lovato 11B50000440 allow high-power motors and electrical equipment to be operated through a lower-power control circuit. This enables remote switching, automated sequencing and integration with overload relays, programmable controllers and industrial safety systems.
The B500 contactor’s high current capacity, wide operational frequency range and robust terminal construction make it suitable for intensive applications where dependable switching and long-term operational stability are essential.
Typical Applications
- Large three-phase industrial motor starters.
- Motor control centres and electrical switchboards.
- Industrial pumps, compressors and ventilation systems.
- Heavy conveyors and material-handling equipment.
- Process manufacturing and production machinery.
- Industrial automation and high-current power-control panels.
