11B40000220 Lovato b series 3 pole maxi contactor 420A 225kW 550A 230VAC/DC

Why Choose the 11B40000220?

Lovato B400 three‑pole contactor (SKU 11B40000220) delivers robust motor switching for demanding installations. Featuring a 220–240V AC/DC coil and IEC AC3 rating of 420A at 400V (up to 225 kW), it handles high inrush currents with confidence. The device offers an IEC AC1 Ith of 550A, providing generous headroom for resistive loads in industrial control panels and power distribution assemblies.

Built for longevity, this contactor achieves 10,000,000 mechanical cycles and operates from −50 to +70 °C. With Ui 1000 V, Uimp 8 kV and screw mounting, it suits harsh environments up to 3000 m altitude (pollution degree 3). Terminal torque is 35 Nm. Conforms to IEC/EN 60947-1/-4-1 and UL/CSA equivalents, with 350 HP at 480 V per UL/CSA ratings.

Key Benefits

• AC3 420A at 400V for heavy-duty motor switching up to 225 kW.
• Broad 220–240V AC/DC coil simplifies control voltage compatibility.
• High Ith 550A capacity supports substantial resistive load applications.
• Enduring 10,000,000 mechanical cycles for extended service life.
• Robust dielectric strength: Ui 1000 V and Uimp 8 kV.
• Operates from −50 to +70 °C; suitable up to 3000 m.
• Screw mounting with 35 Nm terminal torque for secure connections.

Technical Specification

• Product type designation: B400
• Number of poles: 3
• 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: 9600 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 three-pole contactor (product code 11B40000220).
• 220–240V AC/DC coil fitted.
• Installation and safety instructions.

Applications

• Switching large three-phase motors in industrial machinery.
• Pumps, compressors and fans requiring AC3 420A performance.
• Conveyors and material handling systems at 400 V supply.
• HVAC chillers and plant rooms with high inductive loads.
• Control panels needing high-current contactors to IEC 60947.

Safety note: Installation must be performed by qualified personnel. Isolate all power sources, observe the stated ratings and environmental limits, and tighten terminals to 35 Nm to maintain a safe, compliant installation.