BF40T4A400 Lovato contactor 4 pole AC3:40A 18.5kw 400VAC coil

Why Choose the BF40T4A400?

The Lovato BF40T4A400 is a four‑pole contactor engineered for dependable switching in industrial panels. With an IEC AC1 operating current of 70 A and a 400 V AC coil rated for 50/60 Hz, it delivers consistent performance across control systems. The SKU BF40T4A400 supports screw or 35 mm DIN rail mounting, streamlining installation and panel layout while conforming to IEC/EN/BS 60947 and North American UL/CSA standards.

Designed for demanding environments, this BF40 series contactor offers Ui 1000 V and 8 kV impulse withstand, a mechanical life of 15,000,000 cycles, and reliable operation from −50 to +70 °C. It delivers AC3 performance of 40 A/18.5 kW at 400 V and 30 HP at 480 V per UL/CSA, with 4–5 Nm terminal torque, 1240 g weight, and installation up to 3000 m, pollution degree 3.

Key Benefits

• Four-pole design with 70 A AC1 rating for robust switching.
• 400 V AC coil at 50/60 Hz suits standard control supplies.
• AC3 performance: 40 A / 18.5 kW at 400 V for motor loads.
• Flexible screw or 35 mm DIN rail mounting for fast installation.
• High insulation (Ui 1000 V) and 8 kV impulse withstand.
• Long mechanical life of 15,000,000 cycles cuts maintenance.
• Wide −50 to +70 °C operating range for harsh environments.
• UL/CSA 30 HP at 480 V and IEC/EN/BS 60947 compliance.

Technical Specification

• Product type designation: BF40
• Number of poles: 4
• 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: 1240 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 BF40T4A400 four-pole contactor
• Manufacturer datasheet (downloadable)
• Original manufacturer packaging

Applications

• Motor control up to 40 A/18.5 kW at 400 V (AC3).
• Resistive load switching up to 70 A (AC1).
• HVAC and building services panels.
• Pumps, fans and compressors.
• General industrial automation and machinery control.

Safety note: Install and commission only by qualified electricians. Isolate power before work, apply specified torque, and observe the stated temperature, altitude and pollution degree limits in accordance with applicable standards.