Why Choose the LOVATO Electric 11B31040048 Four-Pole Contactor?
The LOVATO Electric 11B31040048 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 power distribution, heating, lighting and industrial automation applications.
This contactor features a versatile 48 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 and a motor rating of up to 170 kW at 400 V, the 11B31040048 delivers the capacity required for large motors and industrial power circuits. Its high insulation rating, secure screw mounting and compliance with international standards support dependable installation in switchboards, motor control centres and heavy-duty machinery.
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.
- 48 V AC/DC control coil for flexible control-system integration.
- Suitable for motors up to 170 kW at 400 V AC-3.
- Four-pole configuration supports neutral and multipole circuit switching.
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.
- 48 V AC/DC control coil.
- 170 kW motor rating at 400 V AC-3.
- 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 11B31040048 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 automated production equipment.
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.
