Arens' automotive-hardened traction inverters with power ranges from 30 to 500 kW (40 to 670 hp) are for applications ranging from large transit buses and medium-duty trucks to hybrid passenger cars. With the Powerpac series, adapting an existing vehicle design to hybrid power does not involve intensive re-engineering. The Arens Powerpac 100-kW (134-hp) traction inverter features a high power density in a compact enclosure designed to fit with the battery, in the vehicle's existing battery box. The inverter offers an insulated gate bipolar transistor-based design and is suitable for truck, bus, agricultural, and construction equipment applications. All Arens inverters feature cast enclosures sealed to IP67 with intelligent thermal protection.