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11B14500440 – 3P CONTACTOR B145.00 440/480V
Lovato 11B14500440 three-pole industrial power contactor with 145 A AC-3 rating and 440 V AC control coil for industrial motor control applications.
Why Choose the Lovato 11B14500440 B145 Power Contactor?
The Lovato 11B14500440 is a heavy-duty three-pole power contactor designed for reliable switching and control of industrial motors and high-current electrical loads. Part of the established Lovato B145 contactor series, this model provides an IEC AC-3 operating current rating of 150 A and features a versatile 440–480 V AC/DC operating coil.
Engineered for industrial automation, machinery and motor control centres, the B145 contactor combines robust construction with dependable electrical and mechanical performance. Its AC/DC coil enables operation from either alternating-current or direct-current control supplies within the specified voltage range, simplifying integration into different control-system designs.
With a conventional free-air thermal current of 250 A, a rated insulation voltage of 1000 V and an impulse withstand voltage of 8 kV, the 11B14500440 is suitable for demanding motor-switching and general-purpose load-control applications. Its screw-mounted construction provides secure installation within industrial electrical panels and machine cabinets.
Key Advantages
- Heavy-duty three-pole contactor for industrial motor control.
- 150 A IEC AC-3 operating current for demanding motor loads.
- 440–480 V AC/DC operating coil for flexible control integration.
- 250 A conventional free-air thermal current.
- High insulation and impulse-withstand ratings for industrial installations.
- Screw-mounted design for secure electrical panel installation.
Key Features
- Lovato B145 power contactor series.
- Three normally open main power poles.
- 150 A IEC AC-3 operating current.
- 250 A IEC AC-1 current at temperatures up to 40°C.
- 440–480 V AC/DC control coil.
- 1000 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Operational frequency range from 25 to 400 Hz.
- Screw terminals and screw mounting for reliable installation.
Reliable Motor Control for Industrial Machinery
Power contactors such as the Lovato 11B14500440 allow high-current three-phase motors and industrial loads to be controlled using a lower-power electrical control circuit. Its 150 A AC-3 operating rating makes it suitable for demanding machinery, material handling equipment and production systems.
The dual AC/DC coil provides additional flexibility when designing or maintaining industrial control systems. Combined with its substantial thermal-current capacity, high insulation rating and robust screw-mounted construction, the B145 contactor supports reliable operation in demanding electrical environments.
Typical Applications
- Industrial motor control centres.
- Large pumps, fans and compressor systems.
- Conveyors and material handling equipment.
- Production and processing machinery.
- Industrial heating and general-purpose load switching.
- OEM machinery and electrical control panels.
Technical Specifications
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| Coil Voltage Range | 380–440 V | |
|---|---|---|
| Power | 75 kW | |
| Current | 145 A | |
| Voltage | 440 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 3-pole | |
| Device Type | Contactor | |
| Coil Type | AC | |
| Series | BF145 | |
| Product type | Three-pole power contactor | |
| Rated operational current (AC-3) | 145 A | |
| Maximum operational voltage | 690 V AC | |
| Control coil voltage | 440 V AC | |
| Number of poles | 3 | |
| Frequency | 50 / 60 Hz | |
| Rated motor power at 400 V | approx. 75 kW | |
| Mounting type | DIN rail or screw mounting | |
| Protection rating | IP20 terminals | |
| Mechanical life | up to 10 million operations | |
| Electrical life | up to 1 million operations | |
| Operating temperature | -50 °C to +70 °C | |
| Standards | IEC / EN 60947-4-1 |
Frequently Asked Questions
What is the Lovato 11B14500440 used for?
It is used for switching three-phase motors and other high-current electrical loads in industrial machinery, automation and motor control systems.
What is the AC-3 operating current of this contactor?
The contactor has an IEC AC-3 operating current rating of 150 A at voltages up to 440 V and ambient temperatures up to 55°C.
What control voltage does the contactor require?
The operating coil is designed for a 440–480 V AC/DC control supply.
Can the coil operate on both AC and DC supplies?
Yes. The contactor has an AC/DC coil that can operate from either an alternating-current or direct-current supply within the specified 440–480 V range.
How is the Lovato 11B14500440 installed?
The contactor uses screw mounting and screw terminals for secure installation inside industrial electrical panels, machinery cabinets and motor control centres.
Trusted by Industrial Control Professionals
Lovato Electric B-series contactors are used by panel builders, machine manufacturers and automation engineers for dependable motor switching, robust electrical performance and reliable integration into industrial control systems.
