

PEM STACKS
4 kW Closed-Cathode Air-Cooled PEM Fuel Cell Stack : HYCUS N4

Summary
Closed-cathode type : Separation of channel for supply of reactant air and cooling air
Stack rated ouput : 4.0 kW
Composed of titanium separator
Stack warranty life time : 3,000 hours
Moisture-free operation (No separate humidifier required)
Optimized for various applications : UAM, UAV, portable power systems, and UPS power solutions
Scalable stack architecture : Supports series and parallel configurations for flexible system integration
Multi-stack power scalability : Enables various system configurations from single-stack operation to tens-of-kW-class power systems
Closed-Cathode Air-Cooled PEM Fuel Cell Stack : HYCUS N4
HYCUS N models consist of closed-cathode type air-cooled fuel cells engineered for efficient, lightweight, and high-performance power delivery in compact applications.
Highly reliable stack performance
Operates without external humidification (Moisture-free operation)
Titanium separators for enhanced durability and reduced weight
Designed for harsh conditions and mobility-oriented use
Stack warranty life of 3,000 hours
The HYCUS N series is purpose-built for seamless integration into portable, mobile, and remote power systems where compactness and reliability are essential.
Key features
Closed-Cathode Design: Independent channels for reactant air and cooling air enhance stack
stability and performance.
Optimized for moisture-free operation—no separate humidifier required.
Titanium separators improve system durability while minimizing weight.
Fuel inlet pressure: 1 ± 0.2 bar.g
Hydrogen consumption: 70 g/kWh (at 5-second purge interval)
Hydrogen consumption: 57 g/kWh (at 8-second purge interval)
Rated power of 4.0 kW.
Technical Specifications
HYCUS N4 (150 cells)
- Rated power : 4.0 kW @ 0.6 A/cm²
- Rated voltage : 106.0 V @ 0.6 A/cm²
- Voltage range : 98 ~ 150.5 Vdc
- Mass : 2.6 kg
- Size (W x L x H) : 215 x 70 x 403 mm
Application areas
UAV Systems
UAM Systems
Portable Power Systems
Mobile Backup Units
Remote Applications
Contact us
TerraLIX delivers customized fuel cell solutions backed by deep expertise in air-cooled systems and proven technical know-how. To explore how HYCUS N can support your energy needs, please fill out the RFQ or contact form on this product page.
Contact Supplier
We create a more resilient and sustainable world through hydrogen power.
We deliver reliable, efficient, and sustainable power for the world’s most demanding missions.
We develop advanced air-cooled hydrogen fuel cell stacks, modules, and power systems enabling cleaner, more resilient power across air, field, and edge applications.
OUR APPROACH
TerraLIX is dedicated to delivering the world’s best closed-cathode air-cooled hydrogen fuel cell stacks. Whether you’re an OEM, system integrator, or solution provider, HYCUS gives you the performance, reliability, and engineering support to build your next-generation hydrogen system with confidence.


