Description
Product Name : DS303A5A01JXA002DC GE Controller module
Product details:
The GE DS303A5A01JXA002DC is a robust, heavy-duty NEMA-rated DC contactor designed for reliable, high-current switching in demanding industrial and power generation applications. Part of the renowned DS303 series, this magnetically-held contactor is engineered to control heavy DC loads, offering long mechanical life and consistent electrical performance under harsh operating conditions.
2. Technical Specifications (Product Parameters)
Below are the key technical parameters for this specific contactor model:
| Parameter | Specification |
| Manufacturer | General Electric (GE) |
| Model / Catalog Number | DS303A5A01JXA002DC (Alternative base code: DS303A5A01JXA002) |
| Device Type | Heavy-Duty Non-Reversing DC Contactor |
| NEMA Size | Size 5 |
| Current Rating (Amps) | 300A |
| Maximum Voltage Rating | 600 VDC |
| Main Pole Configuration | 1 Normally Open (1 NO) Front Connected |
| Control Coil Voltage | 230VDC / 250VDC (Standard “002” Coil Option) |
| Mounting Type | Surface / Panel Mount |
3. Product Advantages
- Superior Durability: Designed to meet rigorous NEMA industrial standards, ensuring high endurance in heavy-cycle applications.
- Effective Arc Extinction: Equipped with robust magnetic blowout coils that quickly extinguish DC electrical arcs, minimizing contact wear and preventing damage.
- Low Maintenance: Built with heavy-duty silver-alloy contacts that resist welding and pitting, reducing downtime and maintenance intervals.
- Thermal Efficiency: Optimized current-carrying components minimize heat generation during continuous 300A duty cycles.
- Reliable Coil Action: Designed with high-quality coil windings that ensure positive, chatter-free sealing even under voltage fluctuations.
4. Installation & Operation Precautions
- Safety First: Ensure that all upstream power supplies (both the main load and control coil voltage) are completely disconnected and locked out before installation, wiring, or servicing.
- Correct Mounting Orientation: Mount the unit vertically on a flat, rigid surface as specified by the manufacturer to ensure proper gravity assistance for contact opening.
- Arc Clearance Distance: Maintain the recommended clearance distances around the arc chutes. The hot gases expelled during high-current interruption require adequate space to prevent flashover to nearby grounded metal or components.
- Coil Voltage Match: Verify that the control circuit supply matches the contactor’s specific coil rating (230/250 VDC). Overvoltage will overheat the coil; undervoltage can cause weak contact pressure, contact bounce, or failure to close.
- Routine Inspection: Periodically inspect the contacts for wear and ensure the arc chutes are clean and undamaged. Replace worn contact kits only with genuine GE replacement parts.
5. Typical Product Applications
The GE DS303 series contactors are widely utilized across heavy industries that require switching of high-power DC systems:
- Gas and Steam Turbines: Frequently used in GE Power turbine control systems (such as Speedtronic Mark VI/VIe systems) for critical auxiliary DC power distribution and emergency backup systems.
- Heavy Industrial Drives: Controls large DC motor starters in steel mills, paper plants, and mining operations.
- DC Substations & Power Distribution: Serves as main line breakers or isolation switches in heavy DC transit networks and backup battery systems.
- Renewable Energy Systems: Utilized in large-scale solar arrays or energy storage facilities to manage and isolate DC circuits.
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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