Why Choose the LOVATO Electric 11B310400380 Four-Pole Contactor?
The LOVATO Electric 11B310400380 is a heavy-duty four-pole industrial power contactor designed for reliable switching of high-current electrical loads. As part of the robust LOVATO B310 contactor series, it provides a conventional free-air thermal current rating of 450 A in AC-1 duty, making it suitable for demanding industrial power distribution, heating, lighting and automation applications.
This contactor features a versatile 380–415 V AC/DC control coil, enabling operation from compatible alternating-current or direct-current control supplies. Its four-pole configuration allows four conductors to be switched simultaneously, making it particularly useful in three-phase systems requiring neutral switching or complete multipole circuit isolation.
With an operational current rating of 320 A in AC-3 duty, a high insulation voltage and robust screw-mounted construction, the 11B310400380 is engineered for dependable operation in industrial switchboards, motor control centres, production machinery and power-management systems.
Key Advantages
- Heavy-duty four-pole contactor for industrial power switching.
- 450 A conventional thermal current rating in AC-1 duty.
- 320 A operational current rating in AC-3 duty.
- 380–415 V AC/DC control coil for flexible integration.
- Four-pole configuration supports neutral and multipole circuit switching.
- High electrical capacity for demanding industrial installations.
Key Features
- LOVATO Electric B310 power contactor series.
- Four main power poles.
- 450 A conventional free-air thermal current.
- 320 A AC-3 operational current at up to 440 V.
- 150 A AC-4 operational current at 400 V.
- 380–415 V AC/DC control coil.
- 1000 V rated insulation voltage.
- Screw mounting for secure industrial installation.
Reliable Four-Pole Power Switching
Four-pole contactors allow four high-current conductors to be switched simultaneously using a low-power electrical control signal. When the control coil is energised, the main contacts operate together, enabling remote control through PLCs, relays, timers, pushbuttons and automated industrial control systems.
The LOVATO Electric 11B310400380 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including electric heating, lighting and power-distribution circuits. Its AC-3 rating also supports the control of large three-phase motors in industrial machinery and automation systems.
Typical Applications
- Industrial heating and resistive load control.
- Four-wire three-phase electrical systems.
- Neutral conductor switching.
- Large three-phase motor starters.
- Industrial lighting installations.
- Power distribution and transfer panels.
- Motor control centres and switchboards.
- Heavy-duty OEM machinery and automation systems.
