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11B310400380 – 4P CONTACTOR B310.4.00 380/415
Lovato 11B310400380 four-pole industrial contactor with 450A AC1 thermal current rating, 320A AC3 operational current and 380…415V AC/DC universal control coil for industrial automation and motor control systems.
Why Choose the LOVATO Electric 11B310400380 Four-Pole Contactor?
The LOVATO Electric 11B310400380 is a heavy-duty four-pole industrial power contactor designed for reliable switching of high-current 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 industrial power distribution, heating, lighting and automation applications.
This contactor features a versatile 380–415 V AC/DC control coil, enabling operation from compatible alternating-current or direct-current control supplies. Its four-pole configuration allows four conductors to be switched simultaneously, making it particularly useful in three-phase systems requiring neutral switching or complete multipole circuit isolation.
With an operational current rating of 320 A in AC-3 duty, a high insulation voltage and robust screw-mounted construction, the 11B310400380 is engineered for dependable operation in industrial switchboards, motor control centres, production 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.
- 320 A operational current rating in AC-3 duty.
- 380–415 V AC/DC control coil for flexible integration.
- Four-pole configuration supports neutral and multipole circuit switching.
- High electrical capacity for demanding industrial installations.
Key Features
- LOVATO Electric B310 power contactor series.
- Four main power poles.
- 450 A conventional free-air thermal current.
- 320 A AC-3 operational current at up to 440 V.
- 150 A AC-4 operational current at 400 V.
- 380–415 V AC/DC control coil.
- 1000 V rated insulation voltage.
- Screw mounting for secure industrial installation.
Reliable Four-Pole Power Switching
Four-pole contactors allow four high-current conductors to be switched simultaneously using a low-power electrical control signal. When the control coil is energised, the main contacts operate together, enabling remote control through PLCs, relays, timers, pushbuttons and automated industrial control systems.
The LOVATO Electric 11B310400380 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including electric heating, lighting and power-distribution circuits. Its AC-3 rating also supports the control of large three-phase motors in industrial machinery and automation systems.
Typical Applications
- Industrial heating and resistive load control.
- Four-wire three-phase electrical systems.
- Neutral conductor switching.
- Large three-phase motor starters.
- Industrial lighting installations.
- Power distribution and transfer panels.
- Motor control centres and switchboards.
- 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 | 380–440 V | |
| Power | 170 kW | |
| Current | 320 A | |
| Voltage | 415 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 | 110 A | |
| UL/CSA horsepower rating at 480 V | 250 HP | |
| Control coil voltage | 380...415 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. 11.12 kg | |
| Dimensions | approx. 208 × 196 × 227 mm | |
| EAN | 8013975074473 | |
| HS code | 85365080 | |
| 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 11B310400380 used for?
It is used to switch high-current four-pole electrical circuits in industrial heating, lighting, power distribution, motor control and automation systems.
What is the AC-1 current rating of this contactor?
The 11B310400380 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 380–415 V AC/DC control coil, allowing operation from a compatible AC or DC control supply.
How many poles does this contactor have?
The LOVATO 11B310400380 has four main power poles, allowing four conductors to be switched simultaneously.
What is the AC-3 current rating of the contactor?
The contactor has an operational current rating of 320 A in AC-3 duty at voltages up to 440 V.
Trusted for Heavy-Duty Industrial 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.
