BF4000A400 Lovato contactor 3 pole AC3:40A 18.5kw 400VAC coil

Why Choose the BF4000A400?

Lovato’s BF4000A400 three-pole contactor (SKU BF4000A400) delivers reliable motor switching with IEC AC3 Ie 40A at 400V (18.5 kW) and an AC coil 50/60Hz at 400VAC. Built on the BF40 platform, it offers Ui 1000 V and Uimp 8 kV insulation performance. Flexible screw or 35 mm DIN rail mounting streamlines panel integration for UK industrial control, automation and machinery applications.

Rated Ith (AC1) 70 A and UL/CSA 480 V horsepower 30 HP, this BF40 series device suits demanding duty cycles, with a mechanical life of 15,000,000 cycles. It operates from -50 to 70 °C up to 3000 m (pollution degree 3), with 4–5 Nm terminal torque. Conformity includes IEC/EN/BS 60947-1/-4-1, UL 60947 and CSA C22.2 standards.

Key Benefits

• IEC AC3 Ie 40A at 400V, suitable for 18.5 kW motors.
• High insulation: Ui 1000 V and Uimp 8 kV withstand levels.
• Wide ambient range from -50 to 70 °C for harsh sites.
• Long mechanical life rated at 15,000,000 operating cycles.
• Versatile screw or 35 mm DIN rail mounting options.
• Strong AC1 Ith 70 A capability for resistive loads.
• UL/CSA 480 V rating up to 30 HP.

Technical Specification

• Product type designation: BF40
• Number of poles: 3
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 70 A
• Terminal tightening torque: 4 to 5 Nm
• Weight: 1020 g
• Mechanical life: 15000000 cycles
• Operating temperature: -50 to 70 °C
• Storage temperature: -60 to 80 °C
• Max altitude: 3000 m
• Pollution degree: 3

What’s Included

• Lovato BF4000A400 three-pole contactor unit
• Manufacturer datasheet or documentation (as provided)
• Original packaging for protection during transport
• Conformity information to listed standards

Applications

• Three-phase motor control up to 18.5 kW at 400 V (AC3)
• General-purpose switching of resistive loads up to 70 A (AC1)
• Industrial control panels with 35 mm DIN rail or screw mounting
• Equipment operating in wide ambient temperatures or up to 3000 m altitude
• Systems requiring IEC/EN/BS 60947 and UL/CSA compliance

Safety note: Installation must be performed by qualified personnel. Isolate power before work, apply terminal tightening torque of 4 to 5 Nm, and follow the applicable standards.