Pico Co., Ltd. is a proud distributor of DAICEL’s high-performance Pyro-Fuses (Pyrotechnic Circuit Breakers).
A Pyro-Fuse is a pyrotechnic, ultra-fast circuit breaker installed in high-voltage battery circuits
for electric vehicles (EVs) and hybrid electric vehicles (HEVs).
Upon detecting an emergency signal from air-bag control systems during a collision,
a micro-pyrotechnic charge ignites inside the device.
The resulting gas pressure drives a cutter to physically sever the metal busbar instantly.
Unlike conventional melting fuses, it safely interrupts massive currents within less than 1 millisecond.
This eliminates secondary disasters, including high-voltage shorts, battery fires,
and electrical shock risks for passengers and rescue teams.
Consequently, it is globally adopted as a vital safety component in electrified vehicles.
Recently, its adoption has expanded into high-voltage industrial applications,
including data centers, ESS (Energy Storage Systems), PCS (Power Conditioning Systems),
UPS (Uninterruptible Power Supplies), and industrial machinery.
It has received high acclaim from clients worldwide who require instantaneous and reliable circuit isolation.
Key Features
- Actuation Method: Pyrotechnic drive linked with external signals utilizing advanced inflator technology.
- Interruption Speed: Ultra-fast circuit isolation in less than 1 millisecond.
- Control System: Proactive safety control that cuts power preemptively the moment a hazard is detected.
- Primary Applications: EV battery isolation and comprehensive safety measures for various high-voltage systems.
- Rated Voltage: Compatible with high-voltage systems up to 1000 VDC.


For further details, please contact us at:
Phone: +81-3-6810-4785
Email : koyamashita@fusepico.jp
