Why Choose the Lovato BF420T4E400 4-Pole Power Contactor?
The Lovato BF420T4E400 is a heavy-duty 4-pole power contactor designed for high-current industrial load switching, motor control and power distribution applications. Part of the Lovato BF series, this contactor combines a conventional free-air thermal current rating of 630 A with an electronically controlled 250–500 V AC/DC coil, providing reliable switching for demanding industrial electrical systems.
The BF420T4E400 is particularly well suited to AC-1 resistive and general-purpose load switching, while also providing substantial AC-3 motor control capability. Its four main power poles enable simultaneous switching of four conductors, making the contactor suitable for industrial distribution, isolation and control arrangements that require a 4-pole switching configuration.
With an AC-3 operational current of 420 A and a motor power rating of 200 kW at 400 V AC, the BF420T4E400 can control large industrial motors as well as high-current non-inductive and slightly inductive loads. The wide-range electronic coil supports both AC and DC control supplies, helping simplify integration into modern automation and power control panels.
Key Advantages
- Heavy-duty 4-pole contactor for high-current industrial switching.
- 630 A conventional free-air thermal current Ith for demanding power applications.
- Suitable for high-current AC-1 load switching.
- 420 A AC-3 operational current for industrial motor control.
- Rated for approximately 200 kW at 400 V AC under AC-3 motor duty.
- Wide-range electronically controlled 250–500 V AC/DC coil.
- Four normally open main poles provide simultaneous 4-pole power switching.
- Robust BF series construction for industrial machinery and power distribution systems.
Key Features
- Lovato BF420 series power contactor.
- 4 normally open main power poles.
- 630 A conventional free-air thermal current Ith.
- 420 A AC-3 operational current at up to 440 V.
- 200 kW AC-3 motor rating at 400 V AC.
- 250–500 V AC/DC electronically controlled coil.
- AC coil operation compatible with 50/60 Hz supplies.
- 1000 V rated insulation voltage Ui.
- 8 kV rated impulse withstand voltage Uimp.
- Designed for screw mounting in industrial electrical assemblies.
- Suitable for motor starters, power switching and automation systems.
Reliable High-Current Switching for Industrial Automation
Power contactors such as the Lovato BF420T4E400 allow high-current electrical circuits to be controlled remotely using a lower-power control signal. Energising the electronically controlled coil operates the four main contacts simultaneously, enabling machinery, motors and other industrial loads to be switched safely through an automated control system.
The BF420T4E400 combines high-current AC-1 capability with an AC-3 rating of 420 A, making it suitable for both general load switching and large motor applications. Its wide 250–500 V AC/DC coil range provides additional flexibility for panel builders and system integrators working with different industrial control voltages.
Typical Applications
- High-current industrial power switching.
- Three-phase motor starters and motor control centres.
- Industrial motors up to 200 kW at 400 V AC under AC-3 conditions.
- Four-pole electrical load switching systems.
- Industrial machinery and production equipment.
- Pumps, compressors, fans and ventilation systems.
- Process automation and manufacturing installations.
- Power distribution and electrical control panels.
