The FC2 cooler line provides air-to-liquid passive cooling for hydrogen fuel cells, combining high efficiency with robust design. Operating from 400 V AC, it is ideal for long-duration applications such as rail platforms and stationary hydrogen power units.

Each unit integrates a brazed aluminium heat exchanger, two brushless fans, an electrical fan controller, and wiring harness, mounted on anti-vibration (AV) mounts for reliable operation. Optional CAN-based control enables precise fan regulation, while a reverse-fan mode clears dust to maintain efficiency.

With cooling performance up to 191 kW, the FC2 delivers low-maintenance, ready-to-deploy cooling, extending fuel cell life and preventing overheating.

Available off-the-shelf or customisable, Grayson calculates ambient limits, flow rate, heat rejection, and coolant temperature to provide reliable, application-specific thermal performance.

Our cooler range combines features that ensure effective heat transfer, robust performance, and straightforward installation across vehicle platforms.

• AC-powered cooling: 400V AC supply ensures stable, efficient operation for continuous duty applications.
• Two-fan configuration: High-capacity cooling of hydrogen stacks with outputs up to 191 kW.
• Brazed aluminium heat exchanger – Lightweight, durable, and compatible with de-ionised water.
• Integrated fan controller and wiring harness: Delivered as a complete plug-and-play module for simple installation.
• AV mounts included: Reduces vibration transfer, improving durability and reliability in rail and stationary systems.
• Rail-ready design: Engineered to meet stringent standards for reliability and safety in transit.
• Stationary power variant: Delivers high flow and rejection capacity to cool large fuel cell stacks used in power generation.
• Waste heat recovery option: Plate heat exchanger can enable recycling of stack heat into HVAC systems.
• Reverse fan function: Clears debris from the core to maintain airflow and cooling efficiency.
• Low-maintenance system: Simplifies servicing and maximises uptime.

Each technical component helps the cooler achieve consistent temperature control and dependable service life.

• Cooling capacity: Up to 191 kW @ 40°C ambient, 290 l/min, 61°C coolant
• Nominal voltage: 400V AC
• Fan configuration: 2 × brushless axial fans
• Electrical integration: Integrated fan controller + wiring harness
• Flow rate: Up to 290 l/min
• Pressure drop: Model dependent
• Heat exchanger: Brazed aluminium (de-ionised water compatible)
• Coolant type: Ethylene-glycol mix or de-ionised water
• Optional: Plate heat exchanger for waste heat recovery

Available in a variety of specifications, our coolers can be matched to different vehicle types and cooling demands.

• 1A-6800-0A00 - 2-fan system, 400VAC, rail specification        
• 1A-100092-0A00 - 2-fan system, 400VAC