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11B310400440 - 4P CONTACTOR B310.4 00 440-480
MPN: 11B310400440
Alt. SKU: B310400440
Why Choose the 11B310400440?
The Lovato B310 four-pole contactor (SKU 11B310400440) delivers reliable switching for demanding industrial control. With an AC/DC coil rated 440…480VAC/DC and an IEC AC1 operating current of 450A, it handles substantial loads with confidence. At 400V AC3, it is rated 320A/170kW, and carries 250HP at 480V under UL/CSA. Screw mounting ensures secure installation in panels and MCCs.
Designed for durability, it offers Ui 1000V and Uimp 8kV, a mechanical life of 10,000,000 cycles, and operates from -50 to 70°C up to 3000 m (pollution degree 3). Terminal tightening torque is 35 Nm and unit weight 1118 g. Conforms to IEC/EN 60947-1/-4-1 and UL/CSA equivalents, with Sustainability certification to support responsible specification.
Key Benefits
- High IEC AC1 current rating of 450A for heavy-duty loads.
- Strong AC3 performance: 320A/170kW at 400V for motor switching.
- Wide 440…480VAC/DC coil range simplifies control circuit design.
- Rated insulation 1000V and 8kV impulse withstand for resilience.
- Extreme operating temperatures from -50°C to 70°C broaden applications.
- Long mechanical life of 10,000,000 cycles reduces maintenance.
- Built to IEC/EN and UL/CSA standards for assured compliance.
- Suitable up to 3000 m altitude; pollution degree 3 rated.
Technical Specification
- Product type designation: B310
- Number of poles: 4
- 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: 1118 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 four-pole contactor, 440…480VAC/DC coil (SKU 11B310400440)
- Manufacturer datasheet (digital download)
- Original manufacturer packaging
- Basic installation and safety information
Applications
- Motor control centres and industrial automation panels
- Pumps, compressors and conveyors requiring high AC3 switching capacity
- HVAC and building services control systems
- Power distribution and switching in process industries
- Heavy-duty contactor replacement and panel upgrades
Frequently Asked Questions
What coil voltage does this contactor use?
The AC/DC coil is rated for 440…480VAC/DC.
What are its current and power ratings?
IEC AC1 is 450A; at 400V AC3 it is 320A/170kW, with 250HP at 480V under UL/CSA.
Which standards does it comply with?
It conforms to IEC/EN 60947-1 and 60947-4-1, UL 60947-1/-4-1, and CSA C22.2 n° 60947-1 and n° 60947-4-1.
What are the environmental limits?
It operates from -50 to 70°C up to 3000 m altitude, pollution degree 3. Storage temperature is -60 to 80°C.
How is it mounted and what is the terminal torque?
It uses screw mounting. Terminal tightening torque is 35 Nm.
Safety note: Installation and maintenance must be performed by qualified personnel. Always isolate power, verify coil voltage, and tighten terminals to 35 Nm before energising the circuit.
| Manufacturer Part Number | 11B310400440 |
|---|---|
| Manufacturer | Lovato |
| HS Code | 85365080 |
| Barcode | 8013975075272 |
| Alternative Product SKU | B310400440 |
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