30mA AC & 6 mA DC leak detector board

Name: 30mA AC & 6 mA DC leak detector board
SKU: 40597
Price: 12.00 USD
Availability: InStock

Detect power lines leaking (30mA AC & 6 mA DC) to protective earth

Designed by edgetech in Netherlands

2025-11-12T21:53:48.931Z-Schematic Prints-12.jpg

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Detect power lines leaking (30mA AC & 6 mA DC) to protective earth

What is it? A simple PCB to connect a BenVac RCMB121-1 sensor to your electronics. It has a 4-pin JST-PH connector for power, calibration and alarm. Guide the power lines you want to protect through …

What is it?

A simple PCB to connect a BenVac RCMB121-1 sensor to your electronics. It has a 4-pin JST-PH connector for power, calibration and alarm. Guide the power lines you want to protect through the hole in the sensor and AC (30 mA) or DC (6 mA) leakage (current not returning through the sensor) will trigger the alarm output.

Why did you make it?

DC leakage to Protective Earth is dangerous when not detected in EV charging, battery or solar systems (anywhere DC power is stored or generated). Regular AC ground-fault interrupts get saturated with a DC leak and do no longer protect against AC (nor DC) faults. This board makes it easy to add DC leak protection.