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11B31000440 - 3P CONTACTOR B310.00 440/480V
MPN: 11B31000440
Alt. SKU: B31000440
Why Choose the 11B31000440?
The Lovato B310 three‑pole contactor (SKU 11B31000440) delivers high‑capacity motor control for demanding industrial applications. Rated 320A AC‑3 at 400V (170kW) and 450A AC‑1, it handles heavy switching with confidence. Its universal AC/DC coil operates at 440–480V, simplifying spares and panel standardisation. With UL/CSA 250HP at 480V ratings and robust IEC performance, this contactor supports reliable, compliant control across global installations.
Engineered for longevity and resilience, the B310 provides Ui 1000V, 8kV impulse withstand, and a mechanical life up to 10,000,000 cycles. It operates from −50 to +70°C and up to 3000m altitude, Pollution Degree 3. Screw mounting and 35Nm terminal tightening torque ensure secure installation. Conforming to IEC/EN 60947‑1/‑4‑1, UL 60947 and CSA standards, and backed by a Sustainability certification, it’s a dependable choice for control panels.
Key Benefits
- 320A AC‑3 at 400V, switching motors up to 170kW
- 450A AC‑1 rating for high resistive load duty
- AC/DC coil operates reliably at 440–480V
- Ui 1000V and 8kV impulse withstand for insulation strength
- Mechanical life up to 10,000,000 operations
- Wide operating temperature from −50 to +70°C
- Screw mounting with 35Nm terminal tightening torque
- Complies with IEC, UL and CSA standards
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: 9400 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 (SKU 11B31000440)
- Pre‑fitted AC/DC coil rated 440–480VAC/DC
- Manufacturer documentation and datasheet (downloadable)
- Protective packaging for transit
Applications
- AC‑3 motor starters up to 170kW at 400V
- Industrial pumps, compressors and conveyors
- Switching resistive loads up to 450A AC‑1
- UL/CSA installations up to 250HP at 480V
- Power distribution and control panels
Frequently Asked Questions
What is the AC‑3 rating of this contactor?
It is rated 320A AC‑3 at 400V, suitable for motors up to 170kW.
What coil voltage does the B310 use?
It has an AC/DC coil operating at 440–480VAC/DC.
Which standards does it comply with?
It conforms to IEC/EN 60947‑1/‑4‑1, UL 60947 and CSA C22.2 standards.
What is the operating temperature range?
The operating temperature is −50 to +70°C.
How is the unit mounted?
It is designed for screw mounting; terminals tighten to 35Nm.
Safety note: Installation and maintenance must be performed by qualified personnel. Isolate power before work, follow the manufacturer’s instructions, and tighten terminals to 35Nm to ensure safe operation.
| Manufacturer Part Number | 11B31000440 |
|---|---|
| Manufacturer | Lovato |
| HS Code | 85365080 |
| Barcode | 8013975074657 |
| Alternative Product SKU | B31000440 |
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