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Great Wall GW-EP300WV45B LED Display Switching Power Supply
$79.99
Great Wall GW-EP300WV45B convection-cooled switching power supply for LED displays — 4.5V/55A output, 100–240VAC input, wide operating temperature, and robust protections.
Great Wall GW-EP300WV45B LED Display Switching Power Supply Description
The Great Wall GW-EP300WV45B is a high-performance switching power supply designed for professional LED display systems and industrial signage. It delivers a stable 4.5V DC output at 55A with robust protections, wide AC input compatibility, and convection cooling—making it ideal for continuous operation in demanding environments.
Product Features:
• Rated output: 4.5 V DC at 55 A for reliable LED panel performance
• Power consumption: 257.50 W (manufacturer specification)
• Wide AC input: 100–240 VAC, 47–63 Hz for global compatibility
• Cold-start inrush handling: 60 A at 230 VAC
• DC adjustment range: ±10% of rated output voltage; line regulation ≤ 0.5% at full load
• Output overload protection: 110%–150% hiccup mode with auto-recovery
• Fast response: rise/hold-up time typically 50 ms / 20 ms at full load
• Withstand voltage: I/P-O/P and I/P-FG 1.5 KVAC; O/P-FG 0.5 KVAC (1 min)
• Wide operating temperature: -40 °C to +50 °C at 100% load; up to +60 °C at 60% load
• Storage: -20 °C to +85 °C, 20%–95% RH (non-condensing)
• EMC and safety design references: GB9254/EN55022 Class A and GB4943/UL60950-1/EN60950-1
• Cooling: free-air convection for quiet, maintenance-free operation
• Compact dimensions for its power class: 215 × 115 × 50 mm
Great Wall GW-EP300WV45B LED Display Switching Power Supply Specification:
| Model | GW-EP300WV45B |
|---|---|
| Power consumption | 257.50 W |
| Rated output voltage | 4.5 V DC |
| Rated output current | 55 A |
| Rated DC output power (calculated) | 247.5 W (4.5 V × 55 A) |
| AC input voltage | 100–240 VAC |
| Input frequency | 47–63 Hz |
| AC inrush current | Cold start 60 A @ 230 VAC |
| DC adjustment range | ±10% rated output voltage |
| Line regulation (full load) | ≤ 0.5% |
| Output overload protection | 110%–150% hiccup mode, auto-recovery |
| Rise / hold-up time | 50 ms / 20 ms at full load (typical) |
| Withstand voltage | I/P-O/P, I/P-FG 1.5 KVAC; O/P-FG 0.5 KVAC, 1 min |
| Working temperature | -40 °C to +50 °C (@100%); +60 °C (@60% load) |
| Storage temperature | -20 °C to +85 °C; 20%–95% RH (non-condensing) |
| Safety standards (design reference) | GB4943, UL60950-1, EN60950-1 |
| EMC standards (design reference) | GB9254, EN55022 Class A |
| Cooling method | Free air convection |
| Dimensions | 215 × 115 × 50 mm |
①Shipping Fee
We offer a fixed shipping fee of $78 per order, regardless of size or weight, making shipping costs predictable and manageable.
②Handling Time
Orders for in-stock items are processed within 24 hours. Some items may require an additional 48-72 hours for processing, and we will notify you if this is the case.
③Delivery Time
Our typical delivery time is 3-7 days, depending on your location. In rare cases of delays due to weather, regulations, or holidays, we appreciate your understanding.
④Customs & Duties
Customs duties, taxes, and other import fees are the responsibility of the recipient. For specific requirements, please inform us before shipping.
⑤Tracking Your Order
You will receive a tracking number once your package is shipped. If you experience any issues, please contact us for assistance.
For more details, please see our [Complete Shipping Policy].
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