The OWP-BL300H-D3-3 Electric Coolant Pump is engineered to deliver exceptional performance for critical thermal management applications, spanning industrial equipment, electronic systems, and specialized machinery that rely on stable, efficient fluid circulation. Operating on a 48VDC power supply (with a wide input range of 42-54VDC), this 300W rated pump combines robust power with energy efficiency, making it ideal for both mobile and stationary setups where reliability and low power consumption are paramount. With a rated flow rate of 2880L/H at 17.5M head and a maximum flow capacity of 5000L/H, it ensures rapid heat dissipation, while its 22M maximum lift head enables seamless operation in complex piping systems. Designed to handle harsh conditions, the pump supports a medium temperature range of -40℃ to 85℃ for long-term continuous use, compatible with glycol-water mixtures (50-60%), dielectric oil, and electronic fluorinated solutions—catering to diverse industrial and electronic cooling needs. Featuring a 50.5mm flange outlet diameter, PWM speed regulation for precise flow control, and high/low-level fault feedback signals for real-time monitoring, the OWP-BL300H-D3-3 stands out as a versatile, user-friendly solution. Its IP68 waterproof rating ensures protection against dust and prolonged submersion, while noise levels are kept to ≤60dB for quiet operation, and a service life exceeding 20000 hours guarantees long-term cost-effectiveness.

1. High Efficiency & Low Noise: Equipped with a closed impeller design, the pump achieves large flow rates while maintaining high operational efficiency and minimizing noise, ensuring optimal performance without disrupting work environments.
2. Compact & Energy-Saving: Adopting a permanent magnet brushless motor, it boasts a compact footprint and low power consumption, saving energy and space for integrated system designs.
3. Durable Shaft System: The shaft assembly uses ultra-long-life friction pair materials, significantly enhancing wear resistance and extending the pump’s service life even under continuous operation.
4. Protective Shielded Structure: The shielded design prevents medium leakage and protects internal components from contamination, ensuring stable performance in harsh or corrosive environments.
5. Reliable & Versatile: With IP68 waterproof protection, wide temperature tolerance, and compatibility with multiple media, it adapts to diverse working conditions, from extreme cold to high-heat applications.
6. Precise Control & Monitoring: PWM speed regulation allows for adjustable flow rates to match varying cooling demands, while fault feedback signals enable timely maintenance and system protection.

The OWP-BL300H-D3-3 Electric Coolant Pump is specifically designed for electric insulating oil cooling systems, making it a critical component for power transformers, electrical motors, and high-voltage equipment where effective insulation and heat dissipation are essential to prevent overheating and ensure operational safety. Beyond insulating oil applications, its versatility extends to cooling electronic devices, industrial automation equipment, renewable energy systems (such as solar inverters and wind turbine converters), and specialized machinery requiring stable circulation of glycol-water mixtures or fluorinated solutions. Whether used in automotive electronics, marine systems, or industrial control panels, this pump delivers consistent, reliable performance to safeguard equipment integrity and extend service life.

Performance Curve

PWM Speed Control Mode & Fault Feedback

Dimensional Drawing