Auto Grade IP68 Electric Coolant Pump for Metro/Light Rail Traction Converter Heat Dissipation in Rail Transit

The OWP-BL43-450T Electric Coolant Pump is a rugged, rail-specific thermal management component engineered to meet the stringent heat dissipation demands of traction converters in metro and light rail systems. Built to withstand the harsh operating conditions of rail transit—including constant vibrations, voltage fluctuations, and extreme temperature ranges—this pump ensures stable cooling for critical power conversion components, supporting safe, reliable, and uninterrupted operation of rail vehicles.

• Closed Impeller Design: Optimizes fluid dynamics to deliver high pumping efficiency while minimizing flow turbulence, directly contributing to the ≤60dB noise control—essential for passenger comfort in metro and light rail cabins.
• Permanent Magnet Brushless Motor: Features a compact footprint and low 250W rated power consumption, enabling space-efficient integration into confined rail vehicle electrical compartments and reducing energy draw from the traction system.
• Ultra-Long-Life Shaft Assembly: Utilizes high-wear-resistant friction pair materials, ensuring a service life exceeding 20,000 hours and reducing maintenance frequency for rail transit fleets operating round-the-clock.
• Centrifugal & Shielded Structure: Isolates the motor from cooling media to prevent contamination and electrical interference, enhancing operational stability in the high-electromagnetic environment of traction converters.
• PWM Duty Cycle Speed Control: Allows precise flow rate adjustment (from 6000L/H rated to 9000L/H max) based on real-time heat loads during acceleration, cruising, or braking, optimizing cooling efficiency and energy utilization.
• Comprehensive Protection Mechanisms: Integrates reverse polarity, overvoltage, overcurrent, dry-run, and overtemperature protection to safeguard both the pump and traction converter from operational failures, ensuring rail transit safety.

Flow-head Curve

Speed Control

The OWP-BL43-450T Electric Coolant Pump is specifically tailored for heat dissipation in traction converters of metro and light rail systems, a critical application in the rail transit industry where thermal management directly impacts power conversion efficiency and operational safety. With a maximum flow rate of 9000L/H and 11M lift head, the pump efficiently circulates compatible cooling media to dissipate heat from IGBT modules, rectifiers, and inverters in traction converters—components that generate significant heat during power conversion for rail vehicle propulsion. Its wide medium temperature range (-40℃ to 85℃) adapts to extreme climates, from cold winters to hot summers, while the IP68 protection grade ensures resistance to dust, moisture, and harsh environmental factors in rail tunnels and outdoor routes. The PWM speed regulation and high/low-level fault feedback signal enable seamless integration with the rail vehicle’s control system, supporting real-time monitoring and adaptive cooling. This model’s compact design, low noise, and long service life make it an indispensable component for enhancing the reliability, safety, and efficiency of metro and light rail traction systems.

Overall Size