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11B310400110 – 4P CONTACTOR B310.4.00 110/125
Lovato 11B310400110 four-pole industrial contactor with 450A AC1 thermal current rating, 320A AC3 operational current and 110…125V AC/DC universal control coil for industrial automation and motor control systems.
Why Choose the LOVATO Electric 11B310400110 Four-Pole Contactor?
The LOVATO Electric 11B310400110 is a heavy-duty four-pole industrial power contactor designed for reliable switching of high-current resistive and inductive electrical loads. As part of the robust LOVATO B310 contactor series, it provides a conventional free-air thermal current rating of 450 A in AC-1 duty, making it suitable for demanding power distribution, heating, lighting and industrial control applications.
This contactor features a versatile 110–125 V AC/DC control coil, allowing it to operate with compatible alternating-current or direct-current control supplies. Its four-pole configuration enables simultaneous switching of four conductors, making it particularly useful in installations requiring neutral switching or control of multipole power circuits.
With a robust screw-mounted construction, a rated insulation voltage of 1000 V and compliance with major IEC, UL and CSA standards, the 11B310400110 is engineered for dependable operation in industrial control panels, switchboards, machinery and power-management systems.
Key Advantages
- Heavy-duty four-pole contactor for industrial power switching.
- 450 A conventional thermal current rating in AC-1 duty.
- 110–125 V AC/DC control coil for flexible integration.
- Four-pole configuration supports simultaneous switching of multiple conductors.
- High 1000 V rated insulation voltage.
- Compliant with recognised IEC, UL and CSA contactor standards.
Key Features
- LOVATO Electric B310 power contactor series.
- Four main power poles.
- 450 A AC-1 conventional thermal current.
- 320 A AC-3 operational current at up to 440 V.
- 110–125 V AC/DC control coil.
- 170 kW motor rating at 400 V AC-3.
- 8 kV rated impulse withstand voltage.
- Screw mounting for secure industrial installation.
Reliable Four-Pole Power Switching
Four-pole contactors allow several conductors to be switched simultaneously using a single electrical control signal. When the control coil is energised, all four main contacts operate together, enabling reliable remote control of multipole loads through PLCs, relays, timers, pushbuttons and automated control systems.
The LOVATO Electric 11B310400110 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including electric heating systems, lighting installations and power-distribution circuits. Its high current capacity and four-pole configuration also make it useful where the neutral conductor must be switched together with three phase conductors.
Typical Applications
- Industrial heating and resistive load control.
- Four-wire three-phase power circuits.
- Neutral switching applications.
- Industrial lighting systems.
- Power distribution and transfer panels.
- Motor control centres and switchboards.
- Manufacturing and process-control equipment.
- Heavy-duty OEM machinery and automation systems.
Technical Specifications
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| Terminal Type | Bar / bolt | |
|---|---|---|
| Coil Type | AC, AC/DC, DC | |
| Coil Voltage Range | 100–130 V | |
| Power | 170 kW | |
| Current | 320 A | |
| Voltage | 125 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Device Type | Contactor | |
| Current AC-1 | 450 A | |
| Series | B310 Contactors | |
| Product type | Four-pole industrial contactor | |
| Number of poles | 4 | |
| Contact configuration | 4 NO | |
| IEC thermal current Ith (AC1) | 450 A | |
| Operational current AC3 at 400 V | 320 A | |
| Rated operational power AC3 at 400 V | 170 kW | |
| Operational current AC4 at 400 V | 150 A | |
| UL/CSA horsepower rating at 480 V | 250 HP | |
| Control coil voltage | 110...125 V AC/DC | |
| Type of coil | AC/DC universal coil | |
| Rated insulation voltage | 1000 V | |
| Impulse withstand voltage | 8 kV | |
| Operational frequency | 25 to 400 Hz | |
| Mounting type | Screw mounting | |
| Terminal type | Bolt connection | |
| Protection rating | IP20 | |
| Operating temperature | -50 °C to +70 °C | |
| Weight | approx. 11.1 kg | |
| Dimensions | approx. 208 × 196 × 227 mm | |
| EAN | 8013975074442 | |
| Compliance | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947-1, UL 60947-4-1, CSA C22.2 n° 60947-1, CSA C22.2 n° 60947-4-1 |
Frequently Asked Questions
What is the LOVATO Electric 11B310400110 used for?
It is used to switch high-current four-pole electrical circuits in industrial heating, lighting, power distribution, automation and motor-control applications.
What is the AC-1 current rating of this contactor?
The 11B310400110 has a conventional free-air thermal current rating of 450 A in AC-1 duty at 40 °C.
What control voltage does the coil require?
This model is equipped with a 110–125 V AC/DC control coil, allowing operation from a compatible AC or DC control supply.
How many poles does the contactor have?
The LOVATO 11B310400110 has four main power poles, allowing four conductors to be switched simultaneously.
Where is this contactor typically installed?
It is commonly installed in industrial switchboards, power distribution panels, motor control centres, machinery and heavy-duty electrical control systems.
Trusted for Heavy-Duty Power Control
LOVATO Electric B310 contactors provide the high-current switching capacity, durable construction and control flexibility required by industrial panel builders, OEM manufacturers and automation engineers.
