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11B310400220 – 4P CONTACTOR B310.4 220/240
Lovato 11B310400220 four-pole industrial contactor with 450A AC1 thermal current rating, 320A AC3 operational current and 220…240V AC/DC universal control coil for industrial automation and motor control systems.
Why Choose the LOVATO Electric 11B310400220 Four-Pole Contactor?
The LOVATO Electric 11B310400220 is a heavy-duty four-pole industrial power contactor designed for reliable switching of high-current electrical loads. As part of the robust LOVATO B310 contactor series, it provides a conventional free-air thermal current rating of 450 A in AC-1 duty, making it suitable for demanding power distribution, heating, lighting and industrial automation applications.
This contactor features a versatile 220–240 V AC/DC control coil, allowing operation with compatible alternating-current or direct-current control supplies. Its four-pole design enables four conductors to be switched simultaneously, making it particularly useful in three-phase systems where neutral switching or additional circuit isolation is required.
With a rated operational current of 320 A in AC-3 duty and a motor rating of up to 170 kW at 400 V, the 11B310400220 is suitable for high-power motors as well as resistive and slightly inductive loads. Its screw-mounted construction, high insulation rating and compliance with international standards support dependable use in industrial control panels and switchboards.
Key Advantages
- Heavy-duty four-pole contactor for industrial power switching.
- 450 A IEC thermal current rating in AC-1 duty.
- 320 A operational current rating in AC-3 duty.
- 220–240 V AC/DC control coil for flexible integration.
- Suitable for motors up to 170 kW at 400 V AC-3.
- Four-pole configuration supports neutral and multipole circuit switching.
Key Features
- LOVATO Electric B310 power contactor series.
- Four main normally open power poles.
- 450 A conventional free-air thermal current.
- 320 A AC-3 operational current at up to 440 V.
- 220–240 V AC/DC control coil.
- 170 kW motor rating at 400 V AC-3.
- Mechanical life of up to 10 million operations.
- Screw mounting for secure industrial installation.
Reliable Four-Pole Power Switching
Four-pole contactors use a low-power electrical control signal to switch four high-current conductors simultaneously. When the control coil is energised, all four main contacts close together, enabling remote operation through PLCs, relays, timers, pushbuttons and automated control systems.
The LOVATO Electric 11B310400220 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including industrial heaters, lighting circuits and power distribution equipment. Its AC-3 rating also supports the switching of large three-phase motors in demanding machinery and automation systems.
Typical Applications
- Industrial heating and resistive load control.
- Four-wire three-phase electrical systems.
- Neutral conductor switching.
- Large three-phase motor starters.
- Industrial lighting installations.
- Power distribution and transfer panels.
- Motor control centres and switchboards.
- Heavy-duty OEM machinery and automation systems.
Technical Specifications
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| Terminal Type | Bar / bolt | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 200–250 V | |
| Power | 170 kW | |
| Current | 320 A | |
| Voltage | 240 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Device Type | Contactor | |
| Current AC-1 | 450 A | |
| Series | B310 Contactors | |
| Product type | Four-pole industrial contactor | |
| Number of poles | 4 | |
| Contact configuration | 4 NO | |
| IEC thermal current Ith (AC1) | 450 A | |
| Operational current AC3 at 400 V | 320 A | |
| Rated operational power AC3 at 400 V | 170 kW | |
| Operational current AC4 at 400 V | 110 A | |
| UL/CSA horsepower rating at 480 V | 250 HP | |
| Control coil voltage | 220...240 V AC/DC | |
| Type of coil | AC/DC universal coil | |
| Rated insulation voltage | 1000 V | |
| Impulse withstand voltage | 8 kV | |
| Operational frequency | 25 to 400 Hz | |
| Mounting type | Screw mounting | |
| Terminal type | Bolt connection | |
| Protection rating | IP20 | |
| Operating temperature | -50 °C to +70 °C | |
| Weight | approx. 11.14 kg | |
| Dimensions | approx. 208 × 196 × 227 mm | |
| EAN | 8013975053386 | |
| Compliance | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947-1, UL 60947-4-1, CSA C22.2 n° 60947-1, CSA C22.2 n° 60947-4-1 |
Frequently Asked Questions
What is the LOVATO Electric 11B310400220 used for?
It is used to switch high-current four-pole electrical circuits in industrial heating, lighting, power distribution, motor control and automation systems.
What is the AC-1 current rating of this contactor?
The contactor has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C.
What control voltage does the coil require?
The 11B310400220 is equipped with a 220–240 V AC/DC control coil.
How many poles does this contactor have?
This model has four normally open main power poles, allowing four conductors to be switched simultaneously.
What motor power can the contactor control?
The contactor is rated for motors up to approximately 170 kW at 400 V in AC-3 duty.
Trusted for Heavy-Duty Industrial Power Control
LOVATO Electric B310 contactors provide the high-current capacity, durable construction and control flexibility required by industrial panel builders, OEM manufacturers and automation engineers.
