Low-voltage disconnect switch

DChigh-currentshort-circuit

Product overview
The Powernet Guardian includes a load cut-off switch (LCS) to isolate safety loads from ordinary loads and a power isolation switch (PIS) to isolate the DCDC from the low-voltage battery; this improves the reliability of the vehicle's safety-load power supply.

Key Selling Points

• Independent control and modular management: MOSFET switch trips at microsecond level with precise fault protection on trip threshold and delay. Driven by a bypass circuit to significantly reduce quiescent power consumption during parking. Optional ripple voltage and ripple current monitoring in the 20 Hz–25 kHz range.
• Long life, maintenance free: MOSFET-based design with extended service life and low failure rate; no maintenance required during vehicle lifecycle.
• Compact size for flexible installation: Small footprint allows installation in multiple vehicle locations to support diverse integration needs.

Downloads (files available)

• Brochure (PDF)
• Product 2D Dimensions (PPTX)

Technical specifications

• Short-circuit detection response time: <100 µs (Hardware)
• Over/Under voltage detection response time: <100 µs (Hardware)
• Normal temperature continuous current: 150 A @ 25°C
• High temperature continuous current: 120 A @ 85°C
• Short-time current: 240 A for 500 ms @ 85°C
• Fault protection: OV (over-voltage) / UV (under-voltage) / OC (over-current) / OT (over-temperature)
• Life expectancy: 10 years or 500,000 km