ABB BC25-30-01 Three-phase contactor

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1. Product Overview

The ABB BC25-30-01 is a three-phase AC contactor designed for motor control and power switching applications in 50/60Hz systems. Known for its high reliability, durability, and modular construction, it is widely used in industrial automation, machinery control, and electrical distribution systems.

2. Main Technical Specifications

• Model: BC25-30-01

• Rated Insulation Voltage (Ui): 690 V AC

• Rated Operational Current (Ie, AC-3): 25 A

• Rated Operational Voltage: 380–690 V AC

• Control Coil Voltage: 24/48/110/220/230/380 V AC or DC (depending on configuration)

• Main Contact Configuration: 3 NO

• Auxiliary Contact: 1 NO

• Mechanical Life: ≥ 10 million operations

• Electrical Life: ≥ 1 million operations (AC-3 duty)

• Mounting: DIN-rail or screw mounting

• Wiring Capacity: 1.5 – 6 mm²

• Protection Class: IP20 (terminal protection)

• Operating Temperature: -25°C to +55°C

• Weight: approx. 0.4 kg

3. Advantages and Features

1. High Reliability and Long Service Life

• High-quality silver alloy contacts provide excellent arc resistance.

• Long mechanical and electrical life, suitable for frequent operation.

2. Modular Design

• Compatible with auxiliary contacts, mechanical interlocks, and thermal overload relays.

• Flexible installation meets various panel design requirements.

3. High Safety Level

• Equipped with terminal protection to prevent accidental contact.

• Compliant with international electrical standards.

4. Low Noise and Stable Operation

• Optimized electromagnetic system ensures low coil noise and stable closing action.

5. Easy Maintenance

• Compact structure with clear wiring layout, making replacement and inspection simple.

4. Application Fields

The ABB BC25-30-01 is commonly used in:

• Industrial automation systems

• Motor starting and control (AC-3 duty)

• HVAC systems

• Pumps, fans, compressors

• Conveyor systems and machining equipment

• Building electrical control

• Distribution panels, control cabinets, and PLC systems

5. Precautions

1. Select the correct coil voltage to avoid coil damage or malfunction.

2. Ensure the load does not exceed the rated operational current.

3. Keep the installation environment dry and corrosion-free.

4. Check and tighten terminals to prevent overheating from loose connections.

5. Set thermal overload relays correctly when used together.

6. Avoid extremely frequent switching under heavy load.

7. Inspect contact wear periodically and replace when necessary.