Autoliv's pyro fuses contribute to safe and reliable operations of electrical systems. They break current and prevent fire in case of electrical malfunction or vehicle crash events. For low and high voltages up to 1,000 V, our pyro fuses work flawlessly even in challenging conditions. With heritage and extensive knowledge in automotive safety, we currently supply our products to a large number of light vehicle OEMs. Contact us today to discuss how we can meet your needs.

What is a pyro fuse?

Pyro fuses are irreversible, mechanical switches cutting the current in critical situations where electrical safety is vital. The pyro fuse is activated by an external signal from the BMS or airbag control unit, triggering the release of pyrotechnic energy pushing a piston to sever the busbar. The flow of electric current ceases instantly.
Autoliv's Pyro Safety Switches are pyro fuses ensuring electrical safety in milliseconds by:

  • Preventing electrical fires and shocks
  • Protecting vehicle occupants and first responders

Applications

Autoliv's pyro fuses protect all low and high voltage systems that produce, store and convert electricity. Examples of application areas include:

  • Electric vehicles
  • Conventional vehicle electrical systems
  • Photovoltaic and wind turbine installations
  • Battery energy storage systems
  • Fuel cell technologies
  • Charging stations
PSS 3D Car

Advantages

EXTREMELY QUICK RESPONSE - Switching-off in tenths of milliseconds, effectively mitigating electrical hazards

IRREVERSIBLE - One-time activation ensuring unambiguous function and post-event analytics

RELIABILITY - No deterioration over time, robustness and ability to operate flawlessly even in challenging environments

PRECISION & PREDICTABILITY - Highly controlled and individually designed triggering conditions meeting the requirements of each case

CURRENT LEVEL INDEPENDENCE - Flawless function in both over-, under- and normal current level triggering events

COST AND SPACE EFFICIENCY - Minimizing the need for component volume and cost due to its constant size independent of voltage levels

Contact us

 Wantao Chen

Wantao Chen

Pyro Safety Switches

Electrical Safety Solutions

 Alain Magne

Alain Magne

Pyro Safety Switches

Electrical Safety Solutions

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