Description
Product Name : DS303A5C01JXA003 GE Controller module
Product details:
The GE DS303A5C01JXA003 is a heavy-duty, industrial-grade DC Contactor belonging to the robust DS303A product line (often integrated with GE Mark IV, EX2000, and EX2100 control systems). It is specifically designed to safely make and break high-current electrical circuits in demanding industrial DC power applications. Engineered for reliability, this device utilizes high-quality magnetic arc-suppression capabilities to handle heavy inductive DC loads efficiently.
2. Technical Specifications (Product Parameters)
The key electrical and mechanical parameters for the DS303A5C01JXA003 are detailed below:
| Parameter | Specification |
| Manufacturer | General Electric (GE) |
| Model / Part Number | DS303A5C01JXA003 (Alternate: DS303A-5C01JXA003) |
| Device Type | Heavy-Duty DC Contactor |
| Rated Operational Current | 300 Amps |
| Maximum Rated Voltage | 600 VDC (NEMA Size 5 rating equivalent) |
| Number of Poles | 2-Pole |
| Contact Configuration | 2 NO (Normally Open) main contacts |
| Coil Voltage | 115 / 120 VDC |
| Mounting Style | Front-connected, Surface Mount |
| Approximate Weight | ~23.50 lbs (~10.66 kg) |
3. Key Product Advantages
- Heavy-Duty Construction: Built to withstand severe industrial environments, offering high mechanical durability and a long operating lifespan.
- Excellent Arc Suppression: Specifically optimized to handle high-current DC switching, which naturally produces highly persistent arcs compared to AC switching.
- Excitation System Integration: Designed to pair seamlessly with legacy GE Mark series turbine controls and generator excitation systems (such as EX2000/EX2100), ensuring precise and rapid electrical interruption.
- Low Maintenance Design: Built with accessible contacts and heavy-duty wear parts, making inspections and contact kit replacements straightforward.
4. Key Applications
This contactor is primarily used where high-reliability DC power control is vital, including:
- Gas & Steam Turbine Controls: Actively used as control contactors within GE Mark IV and Mark V control cabinets.
- Generator Excitation Systems: Implemented in GE EX2000 and EX2100 digital excitation systems to manage field current control.
- Industrial DC Motor Drives: Used to start, stop, and reverse large DC motors in steel mills, mining operations, and paper plants.
- Heavy-duty DC Power Supplies: Serving as isolation and switching devices in high-power distribution systems.
5. Safety & Operational Precautions
- De-energize Before Servicing: Ensure all power sources (both the main 600V DC power line and the 115V DC control coil power) are fully disconnected and locked out before performing maintenance or inspection.
- Arc Chute Integrity: Never operate the contactor without its arc chutes properly installed. Operating without them can lead to catastrophic short-circuits, phase-to-phase faults, or severe physical injury from unsuppressed electrical arcs.
- Monitor Contact Wear: Regularly inspect the 2 NO main contacts for pitting, erosion, or welding. Replace worn contact kits in a timely manner using original manufacturer-specified replacement parts to prevent operational failure.
- Coil Voltage Stability: Ensure that the control circuit provides a stable 115/120 VDC. Significant voltage drops can cause the contactor to “chatter,” which severely degrades the contacts and leads to premature coil burnout.
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: United States
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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