Lovato 11B31040048 four-pole industrial contactor with 450A AC1 thermal current rating, 320A AC3 operational current and 48V AC/DC universal control coil for industrial automation and motor control systems.
£3,043.12
The LOVATO Electric 11B31040048 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 48 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 and a motor rating of up to 170 kW at 400 V, the 11B31040048 delivers the capacity required for large motors and industrial power circuits. Its high insulation rating, secure screw mounting and compliance with international standards support dependable installation in switchboards, motor control centres and heavy-duty machinery.
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 11B31040048 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 automated production equipment.
| Power | 170 kW |
|---|---|
| Current | 320 A |
| Voltage | 48 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 |
| Rated operational power at 690 V | 488 kW |
| Control coil voltage | 48 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. 11.1 kg |
| Dimensions | approx. 208 × 196 × 227 mm |
| EAN | 8013975075258 |
| 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 11B31040048 has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C.
This model is equipped with a 48 V AC/DC control coil, allowing operation from a compatible AC or DC control supply.
The LOVATO 11B31040048 has four 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 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 11B31040048 Four-Pole Contactor 450 A 48 V AC/DC", "sku": "11B31040048", "mpn": "11B31040048", "gtin13": "8013975075258", "brand": { "@type": "Brand", "name": "LOVATO Electric" }, "category": "Industrial Contactors", "description": "LOVATO Electric 11B31040048 B310 four-pole industrial power contactor with a 450 A AC-1 thermal current rating, 320 A AC-3 operational rating and 48 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": "Coil voltage", "value": "48 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" }, { "@type": "PropertyValue", "name": "Catalogue status", "value": "Out of catalogue" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the LOVATO Electric 11B31040048 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 11B31040048 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 48 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 11B31040048 has four main power poles, allowing four conductors to be switched simultaneously." } }, { "@type": "Question", "name": "What motor power can the contactor control?", "acceptedAnswer": { "@type": "Answer", "text": "The contactor is rated for motors up to approximately 170 kW at 400 V in AC-3 duty." } } ] }
● 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...