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11B50000440 – 3P CONTACTOR B500.00 440/480V
Lovato 11B50000440 heavy-duty three-pole industrial contactor with 520 A AC3 operational current rating and 440–480 V AC/DC operating coil for industrial motor control and power switching applications.
£2,070.31
Why Choose the Lovato 11B50000440 Contactor?
The Lovato 11B50000440 is a heavy-duty three-pole industrial power contactor designed for dependable control of large three-phase motors and high-current electrical loads. As part of the robust Lovato B500 contactor series, it combines a high switching capacity with a versatile 440–480 V AC/DC control coil for integration into demanding industrial control systems.
Engineered for motor control centres, switchgear assemblies and large industrial machinery, this contactor provides reliable electrical and mechanical performance under intensive operating conditions. Its three normally open main contacts use durable bolt connections suitable for high-current power circuits, while screw mounting supports secure installation inside industrial panels.
With a conventional free-air thermal current rating of 700 A and an IEC AC-3 operational rating of 520 A / 290 kW at 400 V, the Lovato 11B50000440 is ideal for controlling large pumps, compressors, conveyors and process machinery.
Key Advantages
- Heavy-duty three-pole industrial power contactor.
- 700 A AC-1 current rating at ambient temperatures up to 40 °C.
- 520 A AC-3 operational current for demanding motor-control applications.
- Suitable for motors rated up to 290 kW at 400 V.
- 440–480 V AC/DC operating coil for flexible control-system integration.
- High insulation and impulse-withstand ratings for industrial electrical systems.
Key Features
- Lovato B500 power contactor series.
- Three normally open main power poles.
- 440–480 V AC/DC control coil.
- 700 A IEC AC-1 operational current at 40 °C.
- 520 A / 290 kW IEC AC-3 rating at 400 V.
- 1000 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Bolt-connected main terminals and screw-mounted construction.
Reliable High-Current Motor Control
Industrial contactors such as the Lovato 11B50000440 allow high-power motors and electrical equipment to be operated through a lower-power control circuit. This enables remote switching, automated sequencing and integration with overload relays, programmable controllers and industrial safety systems.
The B500 contactor’s high current capacity, wide operational frequency range and robust terminal construction make it suitable for intensive applications where dependable switching and long-term operational stability are essential.
Typical Applications
- Large three-phase industrial motor starters.
- Motor control centres and electrical switchboards.
- Industrial pumps, compressors and ventilation systems.
- Heavy conveyors and material-handling equipment.
- Process manufacturing and production machinery.
- Industrial automation and high-current power-control panels.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 380–440 V, 460–500 V | |
| Current | 520 A | |
| Power | 290 kW | |
| Voltage | 480 V | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Coil / Supply Voltage | 440 V AC, 480 V AC | |
| Device Type | Contactor | |
| Current AC-1 | 700 A | |
| Series | B500 Contactors | |
| Product type | Three-pole power contactor | |
| Number of poles | 3 | |
| IEC operational current Ith (AC1) | 700 A | |
| IEC operational current Ie (AC3) | 520 A | |
| Motor power rating | 290 kW at 400 V | |
| Rated operational power at 690 V | 416 kW | |
| Type of coil | AC/DC operating coil | |
| Rated coil voltage | 440–480 V AC/DC | |
| Rated insulation voltage Ui | 1000 V | |
| Rated impulse withstand voltage Uimp | 8 kV | |
| Frequency | 25–400 Hz | |
| Mounting type | Screw mounting | |
| Connection type | Screw terminals | |
| Operating temperature | -50 °C to +70 °C | |
| Protection category | Pollution degree 3 | |
| Weight | Approx. 18.3 kg | |
| Dimensions | Approx. 270 × 194 × 263 mm | |
| EAN | 8013975013373 | |
| Compliance standards | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947-1, UL 60947-4-1 | |
| Certifications | CCC, EAC, cULus |
Frequently Asked Questions
What is the Lovato 11B50000440 used for?
It is used to switch large three-phase motors and other high-current electrical loads in industrial automation, machinery and power-control systems.
What control voltage does this contactor require?
The contactor is equipped with a 440–480 V AC/DC operating coil.
What is the AC-3 rating of this contactor?
The 11B50000440 is rated at 520 A and 290 kW at 400 V under IEC AC-3 motor-switching conditions.
What is the AC-1 current rating?
The contactor has an IEC AC-1 operational current rating of 700 A at ambient temperatures up to 40 °C.
How many main contacts does the contactor have?
The Lovato 11B50000440 features three normally open main power contacts.
Trusted for Heavy-Duty Industrial Switching
Lovato B500 contactors provide dependable high-current switching for large industrial motors, automation equipment and power-control systems operating in demanding production environments.
