Eaton adds advanced pyro fuses to circuit protection line

Eaton has expanded its line of circuit protectors with advanced pyro fuses, including a dual-trigger version for safety and reliability when used with electric vehicles.

“The dual-trigger pyro fuse is a game-changer in EV safety, offering an additional fail-safe mechanism that enhances functional safety at the system level,” said Kevin W. Heintz, global vice president and general manager, Power Distribution and Protection, Eaton’s Mobility Group North America.

The pyro fuse works like an airbag, according to the company, and uses an igniter and propellant to separate the main busbar and disconnect power in the event of a circuit fault. Meanwhile, the dual-trigger pyro fuse also uses a stand-alone backup trigger to separate short circuits without an external command.

These fuses add to Eaton’s current circuit protection portfolio, which includes its Bussmann series and Breaktor circuit protection. The Bussmann series EV fuses are designed for up to 1,400 amps and 1,00 volts, while resettable Breaktor circuit protection technology provides fast actuation for circuit faults up to 900 volts and 25,000 amps.