Lovato 11B310400380 four-pole industrial contactor with 450A AC1 thermal current rating, 320A AC3 operational current and 380…415V AC/DC universal control coil for industrial automation and motor control systems.
£3,043.12
The LOVATO Electric 11B310400380 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 industrial power distribution, heating, lighting and automation applications.
This contactor features a versatile 380–415 V AC/DC control coil, enabling operation from compatible alternating-current or direct-current control supplies. Its four-pole configuration allows four conductors to be switched simultaneously, making it particularly useful in three-phase systems requiring neutral switching or complete multipole circuit isolation.
With an operational current rating of 320 A in AC-3 duty, a high insulation voltage and robust screw-mounted construction, the 11B310400380 is engineered for dependable operation in industrial switchboards, motor control centres, production machinery and power-management systems.
Four-pole contactors allow four high-current conductors to be switched simultaneously using a low-power electrical control signal. When the control coil is energised, the main contacts operate together, enabling remote control through PLCs, relays, timers, pushbuttons and automated industrial control systems.
The LOVATO Electric 11B310400380 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including electric heating, lighting and power-distribution circuits. Its AC-3 rating also supports the control of large three-phase motors in industrial machinery and automation systems.
| Power | 170 kW |
|---|---|
| Current | 320 A |
| Voltage | 415 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 | 380...415 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. 11.12 kg |
| Dimensions | approx. 208 × 196 × 227 mm |
| EAN | 8013975074473 |
| HS code | 85365080 |
| 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 11B310400380 has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C.
This model is equipped with a 380–415 V AC/DC control coil, allowing operation from a compatible AC or DC control supply.
The LOVATO 11B310400380 has four main power poles, allowing four conductors to be switched simultaneously.
The contactor has an operational current rating of 320 A in AC-3 duty at voltages up to 440 V.
LOVATO Electric B310 contactors provide the high-current switching capacity, durable construction and control flexibility required by industrial panel builders, OEM manufacturers and automation engineers.{ "@context": "https://schema.org/", "@type": "Product", "name": "LOVATO Electric 11B310400380 Four-Pole Contactor 450 A 380–415 V AC/DC", "sku": "11B310400380", "mpn": "11B310400380", "brand": { "@type": "Brand", "name": "LOVATO Electric" }, "category": "Industrial Contactors", "description": "LOVATO Electric 11B310400380 B310 four-pole industrial power contactor with a 450 A AC-1 thermal current rating, 320 A AC-3 operational rating and 380–415 V AC/DC control coil.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Number of poles", "value": "4" }, { "@type": "PropertyValue", "name": "Conventional thermal current", "value": "450 A AC-1" }, { "@type": "PropertyValue", "name": "Operational current", "value": "320 A AC-3" }, { "@type": "PropertyValue", "name": "AC-4 operational current", "value": "150 A at 400 V" }, { "@type": "PropertyValue", "name": "Coil voltage", "value": "380–415 V AC/DC" }, { "@type": "PropertyValue", "name": "Motor rating at 400 V", "value": "170 kW" }, { "@type": "PropertyValue", "name": "Rated insulation voltage", "value": "1000 V" }, { "@type": "PropertyValue", "name": "Mounting type", "value": "Screw mounting" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the LOVATO Electric 11B310400380 used for?", "acceptedAnswer": { "@type": "Answer", "text": "It is used to switch high-current four-pole electrical circuits in industrial heating, lighting, power distribution, motor control and automation systems." } }, { "@type": "Question", "name": "What is the AC-1 current rating of this contactor?", "acceptedAnswer": { "@type": "Answer", "text": "The 11B310400380 has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C." } }, { "@type": "Question", "name": "What control voltage does the coil require?", "acceptedAnswer": { "@type": "Answer", "text": "This model is equipped with a 380–415 V AC/DC control coil, allowing operation from a compatible AC or DC control supply." } }, { "@type": "Question", "name": "How many poles does this contactor have?", "acceptedAnswer": { "@type": "Answer", "text": "The LOVATO 11B310400380 has four main power poles, allowing four conductors to be switched simultaneously." } }, { "@type": "Question", "name": "What is the AC-3 current rating of the contactor?", "acceptedAnswer": { "@type": "Answer", "text": "The contactor has an operational current rating of 320 A in AC-3 duty at voltages up to 440 V." } } ] }
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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...