Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
11B40000440 – 3P CONTACTOR B400.00 440/480V
Lovato 11B40000440 three-pole industrial contactor with 420A AC3 operational current rating, 550A AC1 thermal current rating and 440…480V AC/DC universal control coil for industrial motor control systems.
Why Choose the LOVATO Electric 11B40000440 Three-Pole Contactor?
The LOVATO Electric 11B40000440 is a heavy-duty three-pole industrial power contactor designed for reliable switching and control of large three-phase motors and high-current electrical loads. As part of the robust LOVATO B400 contactor series, it provides an IEC operational current rating of 420 A in AC-3 duty, making it suitable for demanding industrial motor-control and automation applications.
This contactor features a versatile 440–480 V AC/DC control coil, enabling operation from compatible alternating-current or direct-current control supplies. Its high switching capacity, durable construction and secure screw-mounted design support dependable use in motor control centres, switchboards, production machinery and process-control installations.
With a conventional free-air thermal current rating of 550 A in AC-1 duty and a motor rating of approximately 225 kW at 400 V AC-3, the 11B40000440 is engineered for applications requiring consistent high-power switching. Compliance with recognised IEC, UL and CSA standards further supports its use in industrial electrical systems and OEM machinery.
Key Advantages
- Heavy-duty three-pole contactor for industrial motor control.
- 420 A IEC operational current rating in AC-3 duty.
- 550 A conventional thermal current rating in AC-1 duty.
- 440–480 V AC/DC control coil for flexible integration.
- Suitable for motors up to approximately 225 kW at 400 V AC-3.
- Compliant with major IEC, UL and CSA contactor standards.
Key Features
- LOVATO Electric B400 power contactor series.
- Three main power poles.
- 420 A rated operational current at AC-3.
- 550 A conventional free-air thermal current at AC-1.
- 440–480 V AC/DC control coil.
- 225 kW motor rating at 400 V AC-3.
- 1000 V rated insulation voltage.
- Screw mounting for secure industrial installation.
Reliable High-Current Motor Control
Industrial contactors allow a low-power electrical control signal to switch high-current motor and power circuits. When the contactor coil is energised, the three main contacts close simultaneously, supplying power to the connected three-phase load. This enables safe remote operation through PLCs, pushbuttons, control relays and automated machine-control systems.
The LOVATO Electric B400 series is designed for demanding industrial installations where high current capacity and dependable switching performance are essential. The 11B40000440 combines a 420 A AC-3 rating with a 440–480 V AC/DC coil, providing a practical solution for large motors, industrial machinery and process equipment.
Typical Applications
- Large three-phase motor starters.
- Industrial pumps and compressors.
- Conveyors and material-handling systems.
- Manufacturing and production machinery.
- Motor control centres and switchboards.
- Process-control and factory automation systems.
- Industrial fans and ventilation equipment.
- Heavy-duty OEM machinery and electrical panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Bar / bolt | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 460–500 V | |
| Power | 225 kW | |
| Current | 420 A | |
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 3-pole | |
| Device Type | Contactor | |
| Current AC-1 | 550 A | |
| Series | B400 Contactors | |
| Product type | Three-pole industrial contactor | |
| Number of poles | 3 | |
| Contact configuration | 3 NO | |
| IEC thermal current Ith (AC1) | 550 A | |
| Operational current AC3 at 400 V | 420 A | |
| Rated operational power AC3 at 400 V | 225 kW | |
| UL/CSA horsepower rating at 480 V | 350 HP | |
| Control coil voltage | 440...480 V AC/DC | |
| Type of coil | AC/DC universal coil | |
| Rated insulation voltage | 690 V | |
| Impulse withstand voltage | 8 kV | |
| Supply frequency | 50/60 Hz | |
| Mounting type | Screw mounting | |
| Terminal type | Bolt connection | |
| Protection rating | IP20 | |
| Operating temperature | -50 °C to +70 °C | |
| Weight | approx. 9.45 kg | |
| Dimensions | approx. 208 × 148 × 232 mm | |
| EAN | 8013975026649 | |
| 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 |
Frequently Asked Questions
What is the LOVATO Electric 11B40000440 used for?
It is used to switch and control large three-phase motors and other high-current electrical loads in industrial automation, machinery and motor-control systems.
What is the AC-3 current rating of this contactor?
The 11B40000440 has an IEC operational current rating of 420 A in AC-3 duty.
What control voltage does the coil require?
This model is equipped with a 440–480 V AC/DC control coil, allowing it to operate with a compatible AC or DC control supply.
What motor power can the contactor control?
The contactor is rated for motors up to approximately 225 kW at 400 V in AC-3 duty.
Where is the LOVATO 11B40000440 typically installed?
It is commonly installed in motor control centres, industrial switchboards, electrical control panels and heavy-duty production machinery.
Trusted for Heavy-Duty Industrial Switching
LOVATO Electric B400 contactors provide the high-current capacity, durable construction and control flexibility required by panel builders, OEM manufacturers and industrial automation engineers.
