11B50000380 Lovato b series 3 pole maxi contactor 520A 290kW 700A 400VAC/DC

Why Choose the 11B50000380?

Lovato B500 three‑pole contactor (SKU 11B50000380) delivers high‑current control with an AC/DC coil rated 380–415 VAC/DC. It provides IEC AC3 520 A (290 kW at 400 V) and AC1 700 A for demanding switching duties. With a rated insulation voltage Ui of 1000 V and impulse withstand Uimp of 8 kV, it offers robust performance for heavy industrial panels and reliable operation under significant electrical stress.

Engineered for longevity, the B500 boasts 5,000,000 mechanical cycles, operation from −50 to 70 °C, and reliable service up to 3000 m altitude, Pollution Degree 3. Screw mounting and 35 Nm terminal torque simplify secure installation. Conformity includes IEC/EN 60947‑1/‑4‑1, UL and CSA standards, with a 1850 g build and Sustainability certification supporting rigorous industrial requirements and documentation needs.

Key Benefits

• High AC3 switching capability: 520 A, 290 kW at 400 V.
• Broad AC/DC coil range simplifies control at 380–415 VAC/DC.
• Extended temperature operation from −50 to 70 °C for harsh sites.
• Long mechanical life rated to 5,000,000 cycles for reliability.
• Strong insulation: Ui 1000 V and Uimp 8 kV protection.
• Secure screw mounting with 35 Nm terminal tightening torque.
• Standards compliance: IEC/EN, UL, and CSA for global acceptance.

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: 1850 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 11B50000380).
• Manufacturer datasheet and documentation (online access).

Applications

• High‑power motor starters at 400 V AC3 duty.
• Industrial control panels requiring three‑pole switching and high currents.
• Pumps, fans and compressors with significant inrush demands.
• Installations across wide temperatures or up to 3000 m altitude.

Safety note: Installation and maintenance must be performed by qualified personnel with power isolated. Follow IEC/EN 60947 guidance, observe all specified ratings and temperatures, and tighten terminals to 35 Nm.