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11B400400380 – 4P CONTACTOR B400.4.00 380/415
Lovato 11B400400380 four-pole industrial contactor with 550A AC1 thermal current rating, 420A AC3 operational current and 380…415V AC/DC universal control coil for industrial automation and motor control systems.
Why Choose the LOVATO Electric 11B400400380 Four-Pole Contactor?
The LOVATO Electric 11B400400380 is a heavy-duty four-pole industrial power contactor designed for dependable switching of high-current electrical loads. As part of the robust LOVATO B400 contactor series, it provides an IEC conventional free-air thermal current rating of 550 A in AC-1 duty, making it suitable for demanding power distribution, heating, lighting and industrial 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 normally open main poles allow 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 420 A in AC-3 duty and a motor power rating of 225 kW at 400 V, the 11B400400380 delivers the capacity required for large motors and industrial power circuits. Its high insulation rating, bolt-connected power terminals and compliance with international standards support reliable installation in switchboards, motor control centres and heavy-duty machinery.
Key Advantages
- Heavy-duty four-pole contactor for industrial power switching.
- 550 A conventional thermal current rating in AC-1 duty.
- 420 A operational current rating in AC-3 duty.
- 380–415 V AC/DC control coil for flexible integration.
- Suitable for motors up to 225 kW at 400 V AC-3.
- Four-pole configuration supports neutral and multipole circuit switching.
Key Features
- LOVATO Electric B400 power contactor series.
- Four normally open main power poles.
- 550 A conventional free-air thermal current.
- 420 A AC-3 operational current at 400 V.
- 133 A AC-4 operational current at 400 V.
- 380–415 V AC/DC control coil.
- 225 kW motor rating at 400 V AC-3.
- High 1000 V rated insulation voltage.
Reliable Four-Pole Power Switching
Four-pole contactors allow four high-current conductors to be switched simultaneously using a comparatively low-power electrical control signal. When the control coil is energised, all four main contacts operate together, enabling remote control through PLCs, relays, timers, pushbuttons and automated industrial control systems.
The LOVATO Electric 11B400400380 is particularly suitable for AC-1 applications involving resistive or slightly inductive loads, including electric heating, lighting and power-distribution circuits. Its 420 A AC-3 rating also supports the control of large three-phase motors in industrial machinery and automated production equipment.
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 | 225 kW | |
| Current | 420 A | |
| Voltage | 415 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Device Type | Contactor | |
| Current AC-1 | 550 A | |
| Series | B400 Contactors | |
| Product type | Four-pole industrial contactor | |
| Number of poles | 4 | |
| Contact configuration | 4 NO | |
| IEC thermal current Ith (AC1) | 550 A | |
| Operational current AC3 at 400 V | 420 A | |
| Rated operational power AC3 at 400 V | 225 kW | |
| Power rating at 690 V | 598 kW | |
| Operational current AC4 at 400 V | 200 A | |
| UL/CSA horsepower rating at 480 V | 350 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 | |
| Short-time allowable current for 10s | 3600 A | |
| Operating temperature | -50 °C to +70 °C | |
| Weight | approx. 11.14 kg | |
| Dimensions | approx. 208 × 196 × 227 mm | |
| EAN | 8013975026731 | |
| 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 11B400400380 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 11B400400380 has a conventional free-air thermal current rating of 550 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 11B400400380 has four normally open main power poles, allowing four conductors to be switched simultaneously.
What motor power can the contactor control?
The contactor is rated for motors up to approximately 225 kW at 400 V in AC-3 duty.
Trusted for Heavy-Duty Industrial Power Control
LOVATO Electric B400 contactors provide the high-current switching capacity, durable construction and control flexibility required by industrial panel builders, OEM manufacturers and automation engineers.
