$32.00 $68.00
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The Firduo 200A Anti-Spark Switch is a high-current aluminum PCB power switch engineered to eliminate the destructive electrical arc that occurs when connecting a high-voltage battery to an ESC or motor controller. Built on a 10×10 large-package MOSFET array with an aluminum substrate PCB for superior heat dissipation, this switch handles up to 200A continuous (1000A theoretical burst) at voltages up to 20S (90V) — making it suitable for electric skateboard, e-bike, scooter, eFoil, and high-power DIY builds.
The locking push-button design with integrated LED indicator provides clear on/off status at a glance. The aluminum base allows easy attachment of a larger heatsink for sustained high-current operation.
| Hardware Version | V1.0 |
| Max Voltage | 20S / 90V (safe operating voltage: 80V) |
| Continuous Current | 80A |
| Max Current | 200A (heatsink recommended for sustained use) |
| Burst Current | 1000A (theoretical) |
| MOSFET Package | 10×10 large-package MOS array |
| PCB Material | Aluminum substrate (fire-proof, high thermal conductivity) |
| Control Mode | Locking push-button (press to lock ON / press to release OFF) |
| LED Indicator | 12mm LED button (ON = lit, OFF = unlit) |
| Wire Gauge | 10AWG |
| Dimensions | 68 × 34 × 9.5 mm |
| Heatsink | Optional (connect with thermal silicone grease) |
⚠️Connectors not included.
Q1: What is an anti-spark switch and why do I need one?
When you connect a fully charged high-voltage battery to an ESC, the large capacitors inside the ESC charge instantly, creating a high-current electrical arc at the connector. This arc burns and oxidizes the connector contacts, can damage ESC capacitors, and in extreme cases can cause fires or explosions. An anti-spark switch uses MOSFETs to gradually ramp up the current, eliminating the arc entirely. It also gives you a safe, controlled way to power your build on and off without disconnecting the battery.
Q2: What's the difference between 80A continuous and 200A max?
80A continuous is the sustained current the switch can handle indefinitely without overheating (with adequate airflow). 200A max is the peak current it can handle for short bursts (e.g., during motor startup or hard acceleration). For sustained currents above 80A, attach a heatsink to the aluminum base using thermal silicone grease. The 1000A burst rating is a theoretical MOSFET specification for very short transient spikes only.
Q3: Is this switch waterproof? Can I use it in an eFoil build?
The switch itself is not waterproof — it must be installed inside a sealed, waterproof enclosure for eFoil or marine applications. The aluminum PCB is corrosion-resistant, but the electronics must be protected from water ingress. Use a waterproof project box or custom sealed enclosure, and seal all cable entry points with waterproof grommets or silicone sealant.
Q4: Do I need a heatsink, and how do I attach one?
For continuous currents up to 80A, no heatsink is required with adequate airflow. For sustained operation above 80A (up to 200A), a heatsink is strongly recommended. Apply a thin, even layer of thermal silicone grease to the back of the switch, then press the heatsink firmly against it. Secure with screws if the heatsink has mounting holes. Ensure the heatsink does not contact any PCB traces or components on the edges of the board.
Q5: Can I use this switch with any battery voltage and ESC?
Yes, as long as your battery voltage does not exceed 80V safe operating voltage (20S max). he switch is compatible with any ESC or motor controller — including VESC-based ESCs, hobby ESCs, and custom controllers. But always connect positive to positive and negative to negative. Do not exceed the voltage or current ratings to avoid MOSFET failure.
