11B40000380 Lovato b series 3 pole maxi contactor 420A 225kW 550A 400VAC/DC

Why Choose the 11B40000380?

The Lovato B400 three-pole contactor (SKU 11B40000380) delivers reliable high-current switching for demanding motor control. With AC-3 performance of 420 A at 400 V (225 kW) and a 380…415 VAC/DC coil, it suits flexible control schemes. Rated Ui 1000 V with 8 kV impulse withstand and screw mounting, it complies with IEC/EN 60947-1/-4-1, UL 60947-1/-4-1 and CSA equivalents.

Engineered for longevity, the B400 offers a mechanical life of 10,000,000 cycles and operates from −50 to +70 °C, up to 3000 m altitude, Pollution Degree 3. Terminals support a 35 Nm tightening torque for secure connections. At 480 V it carries a UL/CSA motor rating of 350 HP. A robust 9560 g construction and screw mounting make installation straightforward in heavy-duty panels.

Key Benefits

• High AC-3 performance: 420 A at 400 V, 225 kW motors.
• Flexible control with 380…415 VAC/DC universal coil.
• Robust insulation: Ui 1000 V and 8 kV impulse withstand.
• Extended service life with 10,000,000 mechanical cycles.
• Wide operating range −50 to +70 °C; altitude up to 3000 m.
• Secure screw mounting and 35 Nm terminal torque.
• Compliant with IEC/EN, UL and CSA standards.

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: 9560 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 (SKU 11B40000380).
• Integrated 380…415 VAC/DC coil, pre-fitted.
• Screw terminal connections per specification.
• Manufacturer product datasheet and safety information.

Applications

• AC-3 duty motor starters up to 225 kW at 400 V.
• High-current switching for industrial machinery and process equipment.
• UL/CSA installations requiring up to 350 HP at 480 V.
• Panels operating across wide temperatures and elevated sites to 3000 m.
• Heavy-duty control cabinets requiring IEC/EN 60947 compliance.

Safety note: Installation and maintenance must be performed by qualified personnel. Always isolate power before work, follow applicable standards, and observe specified torque, temperature and altitude limits.