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11B145400110 – 4P CONTACTOR B145.4.00 110/125
Lovato 11B145400110 four-pole industrial power contactor with 145 A AC-3 rating and 110 V AC control coil for industrial motor control and power switching applications.
Why Choose the Lovato 11B145400110 B145 Four-Pole Power Contactor?
The Lovato 11B145400110 is a heavy-duty four-pole power contactor designed for dependable switching of high-current industrial electrical loads. Part of the established Lovato B145 contactor series, this model provides an IEC AC-1 operating current rating of 250 A and features a versatile 110–125 V AC/DC operating coil.
Its four-pole configuration enables four conductors to be switched simultaneously, making the contactor suitable for three-phase and neutral circuits, industrial heating systems and other multi-pole load-control applications. The AC/DC coil supports integration with either alternating-current or direct-current control systems within the specified voltage range.
With a rated insulation voltage of 1000 V, an impulse withstand voltage of 8 kV and a conventional free-air thermal current of 250 A at temperatures up to 40°C, the 11B145400110 provides robust performance for industrial switchboards, automation panels and heavy machinery.
Key Advantages
- Heavy-duty four-pole contactor for industrial load switching.
- 250 A IEC AC-1 operating current at temperatures up to 40°C.
- 110–125 V AC/DC operating coil.
- Four-pole configuration for simultaneous multi-conductor switching.
- 1000 V rated insulation voltage for demanding installations.
- Screw-mounted design for secure industrial panel installation.
Key Features
- Lovato B145 power contactor series.
- Four main power poles.
- 250 A conventional free-air thermal current.
- 110–125 V AC/DC control coil.
- 250 A AC-1 current at temperatures up to 40°C.
- 1000 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Operational frequency range from 25 to 400 Hz.
- Screw mounting for industrial control panels and switchboards.
Reliable Four-Pole Industrial Power Control
Power contactors such as the Lovato 11B145400110 allow high-current electrical loads to be controlled through a lower-power automation circuit. Its four-pole design makes it suitable for applications where three phases and a neutral conductor must be switched together or where four separate power circuits require simultaneous operation.
The 110–125 V AC/DC operating coil provides flexibility for industrial control-system design. Combined with its substantial thermal-current rating, high insulation performance and robust screw-mounted construction, the B145 contactor supports dependable operation in demanding industrial environments.
Typical Applications
- Three-phase and neutral load switching.
- Industrial heating and resistive load systems.
- Four-pole power-distribution circuits.
- Industrial switchboards and control panels.
- Production and processing machinery.
- OEM automation and power-control systems.
Technical Specifications
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| Coil Voltage Range | 100–130 V | |
|---|---|---|
| Power | 75 kW | |
| Current | 145 A | |
| Voltage | 110 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Device Type | Contactor | |
| Coil Type | AC | |
| Series | BF145 | |
| Product type | Four-pole power contactor | |
| Rated operational current (AC-3) | 145 A | |
| Maximum operational voltage | 690 V AC | |
| Control coil voltage | 110 V AC | |
| Number of poles | 4 | |
| 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 11B145400110 used for?
It is used for switching high-current four-pole electrical loads in industrial power distribution, machinery, heating and automation systems.
What is the AC-1 current rating of this contactor?
The contactor has an IEC AC-1 operating current rating of 250 A at ambient temperatures up to 40°C.
What control voltage does the contactor require?
The operating coil is designed for a 110–125 V AC/DC control supply.
How many poles does the 11B145400110 have?
The contactor has four main power poles, enabling four conductors to be switched simultaneously.
Where is this contactor typically installed?
It is typically installed inside industrial switchboards, electrical control panels and machinery cabinets requiring reliable four-pole power switching.
Trusted by Industrial Control Professionals
Lovato Electric B145 contactors are used by panel builders, machine manufacturers and automation engineers for dependable high-current switching, robust electrical performance and flexible integration into industrial control systems.
