Description
Product Name: 100W-B300N Allen Braley Controller module
Product details:
The Allen-Bradley 100W-B300N is a heavy-duty Welding Isolation Contactor specifically designed for the high-demand requirements of industrial welding systems and heavy-current switching applications.
Below is the detailed product information in English.
1. Product Description
The 100W-B300N belongs to the Allen-Bradley Bulletin 100W series. Unlike standard motor control contactors, the “W” designation identifies it as a Welding Contactor. It is engineered to handle the frequent, high-current inrush and thermal cycling typical of resistance welding and large power distribution tasks. It features a robust design to provide long mechanical and electrical life under harsh industrial conditions.
2. Technical Parameters
| Parameter | Specification |
| Catalog Number | 100W-B300N |
| Series | Bulletin 100W (Series A) |
| Contactor Type | Welding Isolation / Heavy-Duty |
| Number of Poles | 3-Pole |
| Current Rating (I_{e}) | 300A (Welding Duty) / ~304A (AC-3 Open Type) |
| Voltage Rating | Up to 600V AC (typically 460V / 575V applications) |
| Coil Voltage | Dependent on suffix (Commonly 110V AC @ 50Hz / 120V AC @ 60Hz) |
| Frame Size | Size 5 |
| Horsepower (HP) Ratings | 100 HP @ 230V / 250 HP @ 460V / 300 HP @ 575V |
| Termination | Terminal pads for bus bars or crimp-type connectors |
3. Product Advantages
- Specialized for Welding: Optimized for “Jogging” and high-frequency switching, reducing contact wear compared to standard IEC contactors.
- High Durability: Features silver-alloy contacts and a rugged arc chute design to dissipate heat quickly and extend contact life.
- Compact Footprint: Despite its high power rating, it offers a space-efficient design suitable for integration into welding control cabinets.
- Global Standards: Complies with IEC, UL, and CSA standards, making it suitable for international deployment.
- Easy Maintenance: Designed with accessible parts for quick inspection and replacement of contacts or coils.
4. Considerations & Precautions
- Duty Cycle: Ensure the welding duty cycle does not exceed the rated specifications to prevent overheating and premature failure.
- Coil Protection: It is highly recommended to use an integrated surge suppressor to protect sensitive control electronics from back-EMF during coil de-energization.
- Wiring: Due to the high current (300A+), ensure all connections are torqued to manufacturer specifications to avoid hot spots at the terminals.
- Environmental Factors: Install in a clean, ventilated enclosure; metallic dust (common in welding environments) can interfere with mechanical movement if not properly sealed.
5. Typical Applications
- Resistance Welding: Used as an isolation contactor for spot welding or seam welding machines.
- Large Motor Control: Heavy-duty motor starting for industrial fans, pumps, and compressors.
- Power Distribution: Switching of large heating loads or resistive banks in industrial furnaces.
- Automation Systems: Acting as a main power disconnect in large-scale automated assembly lines.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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