11B40000440 - 3P CONTACTOR B400.00 440/480V

Why Choose the 11B40000440?

Lovato’s B400 three‑pole contactor (SKU 11B40000440) delivers high‑capacity motor switching with IEC AC‑3 Ie 420 A at 400 V and Ith 550 A (AC‑1). An AC/DC coil rated for 440–480 VAC/DC simplifies control supply selection, while a 1000 V rated insulation and 8 kV impulse withstand support demanding environments. Screw mounting and durable construction make it a reliable choice for heavy switching duties in control panels and motor starters.

Designed for longevity, the B400 offers 10,000,000 mechanical cycles and operates from −50 to +70 °C, with storage −60 to +80 °C and use at altitudes up to 3000 m (pollution degree 3). It conforms to IEC/EN 60947‑1 and 60947‑4‑1, plus UL and CSA equivalents, supporting global compliance. Backed by Lovato quality and sustainability certification, this 9450 g unit integrates cleanly into industrial control assemblies and motor control centres.

Key Benefits

• AC-3 Ie 420 A at 400 V for heavy motor loads.
• Wide 440–480 VAC/DC coil simplifies control supply compatibility.
• High insulation: Ui 1000 V, Uimp 8 kV protection margins.
• Extended operating range from −50 to +70 °C.
• Long mechanical life: 10,000,000 cycles for dependable service.
• Certified to IEC/EN, UL, and CSA standards.
• Suitable up to 3000 m; pollution degree 3 environments.

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: 9450 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 11B40000440
• Integrated AC/DC coil 440–480 VAC/DC
• Installation and safety instructions
• Manufacturer datasheet

Applications

• AC‑3 motor switching up to 420 A at 400 V
• Motor control centres and industrial control panels
• Heavy‑duty switching in machinery and process equipment
• High‑power starters compliant with IEC/EN 60947‑4‑1

Safety note: Install and commission only by qualified personnel. Isolate all power sources before work, follow IEC/EN 60947 practices, and observe ratings, altitude and pollution degree limits.