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.
11B250400440 – 4P CONTACTOR B250.4.00 440/480
Lovato 11B250400440 heavy-duty three-pole industrial contactor with 265A AC3 operational current rating and 440V AC control coil for industrial motor control systems.
Why Choose the Lovato 11B250400440 Four-Pole Contactor?
The Lovato 11B250400440 is a heavy-duty four-pole power contactor designed for reliable switching of high-current electrical loads in demanding industrial and commercial applications. Part of the trusted Lovato B250 contactor series, it is engineered for OEM machine builders, panel manufacturers and industrial automation professionals requiring dependable power control.
Featuring a robust 440–480 V AC/DC control coil, this contactor provides excellent electrical endurance, long mechanical life and reliable switching performance. Its heavy-duty construction makes it ideal for motor control, resistive loads, power distribution equipment and industrial automation systems.
With an AC-1 thermal current rating of 350 A, four normally open (4NO) main poles and a 440–480 V AC/DC operating coil, the 11B250400440 delivers dependable switching performance for demanding industrial installations.
Key Advantages
- Heavy-duty four-pole industrial contactor.
- 350 A AC-1 rated thermal current for demanding applications.
- 440–480 V AC/DC control coil for industrial control systems.
- Designed for switching motors, resistive loads and power circuits.
- Long mechanical and electrical operating life.
- Reliable performance in harsh industrial environments.
Key Features
- Lovato B250 Series.
- Four normally open (4NO) main contacts.
- 350 A AC-1 rated current.
- 265 A AC-3 operational current at 400 V.
- 440–480 V AC/DC operating coil.
- 1000 V rated insulation voltage (Ui).
- 8 kV impulse withstand voltage (Uimp).
- Heavy-duty screw-mounted construction.
Reliable Industrial Power Switching
The Lovato B250 series is designed for demanding industrial environments where dependable high-current switching is essential. Its durable contact system delivers long service life while helping reduce maintenance requirements and maximise equipment uptime.
With its integrated AC/DC operating coil and robust mechanical construction, the contactor integrates easily into industrial control panels, motor control centres and OEM machinery, delivering dependable switching performance under demanding operating conditions.
Typical Applications
- Industrial motor control centres.
- Power distribution systems.
- Heating and resistive load switching.
- HVAC equipment.
- OEM machinery and automation systems.
- Industrial control panels and switchboards.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Screw | |
|---|---|---|
| Poles | 4-pole | |
| Coil Voltage Range | 380–440 V | |
| Power | 140 kW | |
| Current | 265 A | |
| Voltage | 440 V | |
| Phase | Three Phase | |
| Device Type | Contactor | |
| Coil Type | AC | |
| Number of poles | 4 | |
| Series | B250 Contactors | |
| Product type | Three-pole contactor | |
| Operational current (AC3) | 265 A | |
| Rated operational power at 400 V AC3 | 140 kW | |
| Control coil voltage | 440 V AC | |
| Coil frequency | 50 / 60 Hz | |
| Main contacts | 3 NO | |
| Insulation voltage | 690 V | |
| Mounting type | Panel / screw mounting | |
| Terminal type | Screw terminals | |
| Operating temperature | approx. -50 °C to +70 °C | |
| Weight | approx. 9.1 kg | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the Lovato 11B250400440 used for?
It is a four-pole industrial power contactor designed for switching high-current electrical loads in industrial automation, motor control and power distribution systems.
How many poles does this contactor have?
The contactor features four normally open (4NO) main power contacts.
What control voltage does the coil require?
The integrated operating coil is designed for 440–480 V AC/DC control voltage.
What current rating does this contactor support?
The contactor has a conventional thermal current rating of 350 A (AC-1) and an AC-3 operational current of 265 A at 400 V.
Where is the Lovato 11B250400440 typically installed?
It is commonly installed inside industrial control panels, switchboards, motor control centres and heavy-duty automation equipment.
Trusted by Industrial Professionals Worldwide
Lovato B250 contactors are trusted by electrical engineers, machine builders and panel manufacturers for dependable high-current switching, long operational life and reliable industrial performance.
