ABB ZAF300-70 contactor coil

Product Overview

The ABB ZAF300-70 is a magnetic coil designed as a replacement or accessory coil for ABB’s A-Line contactors, especially matched to AF210, AF260, AF300 series. It supports a wide control voltage range (100-250 V AC or DC) and serves to actuate the main contacts of the contactor by electromagnetic means.

Key Technical Specifications

Advantages & Features

1. Wide Voltage Compatibility
   Accepts both AC and DC in the range 100-250 V, giving flexibility in various control systems.

2. Seamless Compatibility with A-Line Contactors
   Designed specifically for ABB A-Line contactor series, ensuring matching mechanical and electrical performance.

3. Modular Replaceability
   The coil is a separate module; faults in coil do not require replacing the entire contactor.

4. Brand Support & Reliability
   As part of ABB’s product portfolio, it enjoys compatibility assurance and recognized quality.

Application Areas

Typical applications include:

• Driving AF210 / AF260 / AF300 contactors for motor control (start/stop)

• Main circuit control in industrial automation systems

• High-power equipment control (pumps, compressors, fans, crushers)

• Heavy industrial environments (mining, power plants, chemical, steel, etc.)

• Control cabinets and switchgear where modular coil replacement is valuable

Precautions & Notes

1. Verify Supply Voltage
   Ensure the control power is within the 100-250 V range before installation to avoid under-voltage failure or overvoltage damage.

2. Polarity & Wiring for DC Mode
   In DC operation, correct polarity wiring is essential. Reversed polarity may lead to non-operation or delayed response.

3. Ambient Conditions & Cooling
   Use in environments with temperatures within allowable ranges and ensure proper ventilation to dissipate heat.

4. Frequent Switching Effects
   If the system requires frequent operations, factor in heating, wear, and reduced lifespan.

5. Voltage Fluctuations
   Avoid significant voltage surges, dips, or transients that can interfere with coil performance or compromise insulation.

6. Mechanical Installation & Wiring Integrity
   Secure fit, correct alignment and proper tightening of terminals are essential. Use conductor gauge adequate to minimize voltage drop and heating.

7. Storage & Handling
   Store spare coils in dry, stable environments. Before use after storage, check insulation resistance and clean terminals.

The structure and details of the product：

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