Hi-Shear's power cartridge creates high-heat, high-pressure combustion energy by igniting the pyrotechnic mixture inside a controlled chamber. The power cartridges (aka initiators) are hermetically sealed electro-explosive devices characterized by their compactness, lightness in weight, environment/corrosion resistance and extremely high reliability (.9999).
Hi-Shear has manufactured power cartridges, including the NASA Standard Initiator for over 20 years without a single failure. We are the primary qualified source for the NASA Standard Initiator (NSI) used for all initiation functions on the Space Shuttle. The NSI, available only through NASA performs from an incredible low temperature of -420°F to a high of +300°F.
Our PC-23, the NSI equivalent is used in all other space and defense programs. Our PC series meet Range Safety Standards for RF & EMI hazards, and 5 minutes 1 Amp / 1 Watt No-Fire test. The PC 117 series meets MIL-DTL-23659.