Shelly Bypass for Dimmer Gen3
The Shelly Bypass for Dimmer Gen3 is a compact electrical accessory designed to enable the Shelly Dimmer Gen3 and Gen4 to operate flawlessly in installations without a Neutral wire, particularly when controlling loads under 20 W. This essential component solves a common challenge in older buildings and retrofit installations where neutral wiring is unavailable, ensuring stable and reliable dimming performance without the need for complex rewiring or electrical modifications.
Why You Need the Shelly Bypass
Many smart dimmers require a Neutral wire to function properly, but this is often unavailable in older or retrofit installations. The Shelly Bypass eliminates this limitation, allowing you to upgrade your lighting control system to smart dimming without costly rewiring. Its ultra-compact design fits easily behind light fixtures or inside switch boxes, making it perfect for LED downlights, low-wattage dimmable lamps, and other low-power lighting applications.
Key Features
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Compatible with Shelly Dimmer Gen3 and newer models: Required for no-neutral installations when controlling loads under 20 W
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Ultra-compact design: Measures just 39 × 23 × 13 mm, fits in tight spaces behind light fixtures
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Perfect for retrofits: Install behind the light fixture with no major installation or rewiring required
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Low power consumption: Uses less than 4 W for stable, continuous operation
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Wide compatibility: Designed and tested to ensure compatibility with a wide range of dimmable lights
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Lightweight design: Weighs only 8 grams for easy installation
How It Works
The Shelly Bypass connects in parallel to the load, linking both the Neutral and Live wires. This configuration allows the Shelly Dimmer Gen3 to function correctly in no-neutral setups, preventing common issues like flickering or insufficient power for low-wattage LED lamps. It's especially useful when dimming LED bulbs, low-voltage incandescent lamps, or other lighting loads that fall below the 20 W minimum required for standard no-neutral operation.
Perfect for Australian Homes and Businesses
Ideal for home automation enthusiasts, electricians, and smart home installers working with Australian 220-240 V~ 50 Hz electrical systems. The Shelly Bypass for Dimmer Gen3 is the missing piece that makes smart lighting control possible in older homes, heritage properties, and buildings where neutral wire access is limited or non-existent.
Installation
The device must be installed by a licensed electrician. Always disconnect mains power before installation and consult local electrical standards. The Bypass is designed for 220-240 V~ 50 Hz systems and connects in parallel to the lighting load as shown in the Shelly Dimmer Gen3 wiring diagram.
What's in the Box
- 1 × Shelly Bypass for Dimmer Gen3
- Printed user and safety guide
Full Specifications
Physical
| Dimensions (H × W × D) |
39 × 23 × 13 mm / 1.54 × 0.91 × 0.51 in (without wires) |
| Weight |
8 g / 0.28 oz |
| Mounting |
Behind light fixture, parallel to load |
Electrical
| Power Supply |
220-240 V~ 50/60 Hz |
| Power Consumption |
Less than 4 W |
| Connection |
Neutral and Live wires |
| Load Requirement |
Required for loads under 20 W in no-neutral installations |
Compatibility
| Compatible Devices |
Shelly Dimmer Gen3, Shelly Dimmer Gen4, and newer models |
| Light Types |
Dimmable LED lamps, incandescent bulbs, halogen lamps, low-voltage lights |
Warranty
| Warranty Period |
3 years (Shelly Gen3 and Gen4 devices) |
Specifications are sourced from the manufacturer product page and may be updated.
