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11B145400440 – 4P CONTACTOR B145.4.00 440/480
Lovato 11B145400440 four-pole industrial contactor with 250 A AC-1 current rating and 440–480 V AC/DC coil for industrial automation and power switching applications.
Why Choose the Lovato 11B145400440 Four-Pole Power Contactor?
The Lovato 11B145400440 is a robust four-pole industrial power contactor designed for reliable switching of high-current electrical loads in motor control, power distribution and industrial automation systems. As part of the proven Lovato B145 contactor series, it delivers dependable performance, long electrical endurance and reliable operation in demanding industrial environments.
Designed for OEM machine builders, panel manufacturers and industrial maintenance engineers, this contactor combines durable contact materials with a high-performance electromagnetic operating mechanism to ensure reliable switching throughout its service life. The integrated 440–480 V AC/DC operating coil makes it suitable for higher-voltage industrial control circuits.
With a 250 A AC-1 thermal current rating, a 150 A AC-3 operational current, four normally open (4NO) main contacts and a 440–480 V AC/DC control coil, the 11B145400440 is ideal for switching large motors, heating systems and industrial power circuits. Its screw-mounted construction enables secure installation within electrical control panels and switchboards.
Key Advantages
- Heavy-duty four-pole industrial contactor for demanding switching applications.
- 250 A AC-1 thermal current with 150 A AC-3 operational rating.
- 440–480 V AC/DC operating coil suitable for industrial control systems.
- Four normally open (4NO) main contacts.
- Excellent mechanical and electrical service life.
- Ideal for industrial automation, motor control and power distribution.
Key Features
- Lovato B145 power contactor series.
- Four-pole (4NO) configuration.
- 250 A conventional thermal current (AC-1).
- 150 A rated operational current (AC-3).
- 440–480 V AC/DC control coil.
- 1000 V rated insulation voltage (Ui).
- 8 kV rated impulse withstand voltage (Uimp).
- Heavy-duty screw terminal connections.
Reliable Switching for Industrial Power Systems
Industrial contactors such as the Lovato B145 series provide safe and dependable switching of high-current motors, resistive loads and industrial electrical circuits. Their robust construction helps minimise maintenance while ensuring long-term reliability in demanding industrial applications.
The 11B145400440 is ideal for installation within industrial control panels, motor control centres, OEM machinery and power distribution systems where dependable high-current switching is essential.
Typical Applications
- Industrial motor starters and motor control centres.
- Power distribution equipment.
- Industrial automation systems.
- HVAC plants and compressor control.
- Pumps, conveyors and production machinery.
- OEM electrical control panels and switchboards.
Technical Specifications
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| Coil Type | AC, AC/DC, DC | |
|---|---|---|
| Coil Voltage Range | 380–440 V, 460–500 V | |
| Power | 80 kW | |
| Current | 150 A | |
| Voltage | 480 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Device Type | Contactor | |
| Current AC-1 | 250 A | |
| Series | B145 | |
| Product type | Four-pole industrial contactor | |
| Rated thermal current (AC-1) | 250 A | |
| Rated operational current (AC-3 at 400 V) | 150 A | |
| Rated operational current (AC-4 at 400 V) | 57 A | |
| Maximum operational voltage | 690 V AC | |
| Control coil voltage | 440–480 V AC/DC | |
| Number of poles | 4 | |
| Main contacts | 4 NO | |
| Rated motor power at 400 V AC-3 | 80 kW | |
| Mounting type | Screw mounting | |
| Protection rating | IP20 terminals | |
| Operating temperature | -50 °C to +70 °C | |
| Weight | approx. 6.34 kg | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1 |
Frequently Asked Questions
What is the Lovato 11B145400440 used for?
This contactor is designed for switching high-current motors and industrial electrical loads within automation, motor control and power distribution systems.
How many poles does this contactor have?
The unit features a four-pole (4NO) main contact configuration.
What control voltage does this model require?
The operating coil is rated for 440–480 V AC/DC.
What current rating does the contactor support?
It provides a 250 A AC-1 thermal current rating together with a 150 A AC-3 operational current rating.
Where is this contactor typically installed?
It is typically installed inside industrial control panels, switchboards, motor control centres and OEM machinery.
Trusted by Industrial Engineers Worldwide
Lovato power contactors are trusted by machine builders, panel manufacturers and industrial engineers worldwide for reliable switching performance, robust construction and long service life.
