11B50000440 - 3P CONTACTOR B500.00 440/480V

Why Choose the 11B50000440?

Engineered for demanding motor control, the Lovato B500 three‑pole contactor delivers 520 A AC3 at 400 V and 700 A AC1 thermal current. The AC/DC coil spans 440–480 V for flexible control supply compatibility. Rated Ui 1000 V with 8 kV impulse withstand, it provides robust insulation performance for industrial panels needing dependable, high‑capacity switching.

Designed for longevity, this unit achieves 5,000,000 mechanical cycles and operates from −50 to 70 °C (storage −60 to 80 °C). Screw mounting with 35 Nm terminal tightening ensures secure connections, while suitability up to 3000 m and Pollution Degree 3 supports varied installations. Conforming to IEC/EN 60947-1/-4-1 as well as UL and CSA equivalents, the 1834 g assembly integrates confidently into global control panels.

Key Benefits

• High AC3 switching capability: 520 A at 400 V for heavy motors.
• Wide-range AC/DC coil 440–480 V simplifies control supply matching.
• Robust insulation: Ui 1000 V with 8 kV impulse withstand rating.
• Extended durability with 5,000,000 mechanical cycles for long service life.
• Broad operating range −50 to 70 °C; suitable up to 3000 m altitude.
• Secure screw mounting; 35 Nm terminal torque for reliable connections.
• Standards compliance: IEC/EN, UL, and CSA for assured conformity.

Technical Specification

• Product type designation: B500
• Number of poles: 3
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 700 A
• Terminal tightening torque: 35 to 35 Nm
• Weight: 1834 g
• Mechanical life: 5000000 cycles
• Operating temperature: -50 to 70 °C
• Storage temperature: -60 to 80 °C
• Max altitude: 3000 m
• Pollution degree: 3

What’s Included

• Lovato B500 three-pole contactor, SKU 11B50000440, with AC/DC coil 440–480 V
• Integrated screw terminals for power connections
• Manufacturer datasheet and conformity information
• Protective packaging for safe transit

Applications

• Motor starters requiring 520 A AC3 performance at 400 V
• Switching of resistive loads within the 700 A AC1 rating
• Industrial control panels operating in wide temperature environments
• Installations up to 3000 m altitude and Pollution Degree 3 sites

Safety note: Install and commission by qualified personnel only. Isolate power before work, observe rated currents and voltages, tighten terminals to 35 Nm, and follow IEC/EN 60947 and local regulations.