11B3100024 Lovato b series 3 pole maxi contactor 320A 170kW 450A 24VAC/DC

Why Choose the 11B3100024?

The Lovato B310 three‑pole contactor (SKU 11B3100024) combines high motor duty performance with flexible control. Its 24VAC/DC AC/DC coil supports AC or DC control circuits, while AC‑3 ratings reach 320A at 400V (170 kW). For AC‑1 it offers an Ith of 450A, and UL/CSA motor duty is 250 HP at 480V. A robust, screw‑mounted design makes it a dependable choice for demanding switchgear and OEM builds.

Engineered for reliability, the B310 provides Ui 1000V insulation and 8 kV impulse withstand, backed by a mechanical life of 10,000,000 cycles. It operates from −50 to 70 °C and up to 3000 m altitude, with Pollution Degree 3 suitability. Terminals tighten to 35 Nm for secure connections. Conformity includes IEC/EN 60947‑1/‑4‑1, UL 60947‑1/‑4‑1 and CSA C22.2, streamlining specification in international projects.

Key Benefits

• AC‑3 320 A at 400 V, up to 170 kW motor duty
• Dual 24 VAC/DC coil enables AC or DC control circuits
• High Ith 450 A for AC‑1 applications and feeders
• Rated insulation Ui 1000 V with 8 kV impulse withstand
• UL/CSA motor duty 250 HP at 480 V for North American panels
• Wide operating range: −50 to 70 °C; altitude up to 3000 m
• Long mechanical life: 10,000,000 cycles for reduced maintenance
• Screw mounting with terminals tightened to 35 Nm

Technical Specification

• Product type designation: B310
• Number of poles: 3
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Ith (IEC): 450 A
• Terminal tightening torque: 35 to 35 Nm
• Weight: 9690 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 B310 three‑pole contactor, 24 VAC/DC coil (SKU 11B3100024)
• Manufacturer’s installation and safety instructions
• Product datasheet (downloadable)
• Original manufacturer packaging

Applications

• AC‑3 motor control up to 320 A at 400 V (170 kW)
• AC‑1 switching for power distribution and feeder circuits up to 450 A
• OEM machinery, conveyors, compressors and pump control panels
• Switchboards, MCCs and industrial automation requiring IEC/UL compliance
• Sites with wide temperature range and altitudes up to 3000 m

Safety note: Installation and maintenance must be performed by qualified personnel. Isolate power before work, follow IEC/EN 60947 and local regulations, and observe all specified ratings, torque, temperature and altitude limits.