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H-300 PEM Fuel Cell - 300W

300W PEM Fuel Cell Stack Overview

This fuel cell stack provides a modest bump in wattage over the H-200 but otherwise remains the same.  The increase in wattage is designed to enable this fuel cell stack to electrify a wider range of applications, and as a result fits well into mobility and stationary applications.  Air cooling is used since this stack is part of the H-Series product line of hydrogen fuel cell stacks.  

This fuel cell stack also comes with the following:

  • Connection Tubing
  • Electronic Valves
  • Electronic Control Box
  • Fuel Cell On/Off Switch
  • SCU On/Off Switch

Fuel Cell Stack 300W

Additional Information

Horizon does encourage filling out a quote request form here in order to ensure that any needed supplemental parts can be included with your order.  While we do try to keep air cooled fuel cell stack up to 5kW in stock, we recommend filling out the quote request form so that we can set proper delivery expectations.

Fuel Cell and Hydrogen Safety Requirements

Do not connect or disconnect power cables when the fuel cell stack is turned on. Warranty is void if the fuel cell stack is disassembled or otherwise altered. Hydrogen is a colorless, odorless, and flammable substance. Always operate and store the fuel cell stacks and hydrogen storage canisters in an area with ample ventilation. Fuel cell systems should always be equipped with a highly accurate hydrogen sensor to detect any leaking hydrogen within the system or from the hydrogen storage canister. Please refer to the H-300 User Manual to see a complete list of the safety requirements for the product.

Fuel Cell Stack 300W Quick Product Facts


Number of Cells 

This fuel cell stack is composed of 60 fuel cells.


Hydrogen Pressure

Hydrogen must be fed into the fuel cell stack at a pressure of 0.45-0.55 Bar.


Ambient Temperature

The fuel cell stack operates best in a temperature ranging from 41 to 86° F / 5-30°C.



This fuel cell stack uses self-humidification.


FC Stack Weight

The stack (including fan and casing) weighs 6.6lbs / 3kg.

weight 2

Controller Weight

The weight of the controller is 0.9lbs / 0.4kg.


System Efficiency

At 36 volts the efficiency of the system is 40%.

external power supply

External Power

Proper operation of the stack requires an external power supply of 13 volts at 5 amperes.


User Manual

pdf [3.7 MB]

User Manual

pdf [3.22 MB]

Brochure You need to be Logged in to download these files

pdf [880.45 kB]

This product is only on demand. Please contact us.

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