Introducing compact systems – the fuel cell power modules C190E and C100E – designed for optimal performance in various applications, ranging from city buses to intercity buses and coaches, vocational vehicles, and medium-duty trucks. These innovative systems feature compact stack configurations suitable for both rooftop and engine bay applications, along with a coolant pump and an integrated power transfer unit that includes a DC/DC converter. By significantly reducing the number of components, these systems not only simplify assembly processes but also enhance serviceability, making them an ideal choice for sustainable transportation needs.