11B400400220 - 4P CONTACTOR B400.4.00 220/240

Why Choose the 11B400400220?

The Lovato B400 four-pole contactor (SKU 11B400400220) delivers robust switching for heavy-duty AC applications. Its AC/DC coil operates at 220...240 VAC/DC, while IEC Ith (AC1) is rated at 550 A, and AC3 performance reaches 420 A / 225 kW at 400 V. UL/CSA horsepower is 350 HP at 480 V, with secure screw mounting for dependable installation.

Engineered for demanding environments, the B400 offers Ui 1000 V and Uimp 8 kV, a mechanical life of 10,000,000 cycles, and operation from -50 to 70 °C up to 3000 m altitude (pollution degree 3). It conforms to IEC/EN 60947-1 and 60947-4-1 plus UL/CSA standards, with 35 Nm terminal torque for reliable connections and long service.

Key Benefits

• High AC1 Ith 550 A for heavy-duty continuous-duty loads.
• Strong AC3 rating 420 A / 225 kW at 400 V.
• Universal 220...240 VAC/DC coil simplifies stocking and control voltage.
• Four-pole configuration for flexible power and control schemes.
• Rated insulation 1000 V and 8 kV impulse withstand.
• Long mechanical life of 10,000,000 cycles reduces downtime.
• Wide operating temperature -50 to 70 °C for harsh environments.
• Screw mounting with 35 Nm terminal tightening torque.

Technical Specification

• Product type designation: B400
• Number of poles: 4
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 550 A
• Terminal tightening torque: 35 to 35 Nm
• Weight: 1112 g
• Mechanical life: 10000000 cycles
• Operating temperature: -50 to 70 °C
• Storage temperature: -60 to 80 °C
• Max altitude: 3000 m
• Pollution degree: 3

What’s Included

• Lovato B400 four-pole contactor (SKU 11B400400220)
• Pre-fitted 220...240 VAC/DC coil
• Manufacturer documentation (datasheet/installation guidance)

Applications

• High-current AC motor switching (AC3 duty) up to 400 V
• Power distribution and feeder circuits (AC1 duty)
• Industrial control panels requiring four-pole isolation
• Installations operating across wide ambient temperature ranges

Safety note: Installation and maintenance must be performed by qualified personnel. Isolate all power before work, observe the stated ratings, altitude and pollution degree limits, and tighten terminals to 35 Nm in accordance with applicable standards.