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.
£3,043.12
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.
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.
| Power | 170 kW |
|---|---|
| Current | 320 A |
| Voltage | 240 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| 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 |
It is used to switch high-current four-pole electrical circuits in industrial heating, lighting, power distribution, motor control and automation systems.
The contactor has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C.
The 11B310400220 is equipped with a 220–240 V AC/DC control coil.
This model has four normally open main power poles, allowing four conductors to be switched simultaneously.
The contactor is rated for motors up to approximately 170 kW at 400 V in AC-3 duty.
LOVATO Electric B310 contactors provide the high-current capacity, durable construction and control flexibility required by industrial panel builders, OEM manufacturers and automation engineers.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...