ECUMaster Battery Isolator - AS Radlok

FIA-compliant battery isolator engineered for motorsport safety and reliability. This solid-state master relay delivers 300A continuous (peak 1000A) with zero mechanical components—eliminating wear and failure points. Weighs just 83g in a compact, IP67-rated aluminium enclosure. Built-in alternator load dump protection safeguards expensive electronics during emergency shutdown. Dual external switch control plus CAN-bus integration allows remote kill commands from ECUMaster PMU16 or impact sensors. Full diagnostic telemetry via CAN supports setup and real-time monitoring. Operates across -40°C to +125°C with integrated over-current and thermal protection. Multi-colour LED status indicator. Radlok high-current terminals and Deutsch ASX connectors ensure secure, repeatable connections in harsh environments. Configurable engine kill output (3A, high/low/Hi-Z selectable). Ideal for circuit racing, rallying, and performance vehicles where safety, weight savings, and system integration matter.

Detailed user manual can be found here.

Key features

• Weight: 83g
• Dimensions: 50mm x 100mm x 38.5mm
• Voltage range: 6V-19V, 28V transient (12V automotive installations only)
• Operating temperature range: -40C + 125C
• Current capability: 300A continuous, peak up to 1000A
• Current measurement resolution 4A
• Current measurement range: -1000A to 1000A
• Current measurement accuracy: ±10%
• Inductive load switching capability: 600mJ
• Enclosure: Anodized aluminium, IP67 rated
• High current terminals: Radlok connectors
• Signal connector: Deutsch ASX202-06PN (mating plug ASX602-06SN included)
• Power save state current consumption: <1mA
• ON state current consumption: ~20mA
• Engine kill output: 3A, High (VBat), Low (GND) or Hi-Z