Restore reliable power management to your printer. Replace a stuck, flickering, or non-responsive power switch with this verified, factory-original Elegoo OEM component. This switch is the critical gateway for your printer's 24V power supply system.
This is a Genuine Elegoo OEM (Original Equipment Manufacturer) Power Switch, harvested from an authenticated Neptune 4 Max. It is a heavy-duty, rocker-style switch designed specifically to handle the high current draw required by the Neptune 4 series' power supply unit (PSU).
PROFESSIONAL REPAIR REQUIRED: HIGH VOLTAGE HAZARD.
DANGER: This component handles 110V/220V AC mains electricity. Only individuals with experience in high-voltage electrical repair should attempt this replacement.
Power Disconnect: The printer must be unplugged from the wall outlet and the power cable removed before performing any work. Even with the power disconnected, wait at least 5 minutes for the PSU capacitors to discharge.
Wiring Integrity: Document the wiring configuration (Live/Neutral connections) before disconnecting the old switch. Reversing these wires or creating a loose connection can cause a short circuit, fire hazard, or permanent damage to your PSU.
Risk: Self-installation is performed entirely at your own risk.
⚠️ PRE-OWNED HARVEST COMPLIANCE: Every switch has been meticulously extracted and verified for electrical longevity.
Mechanical Action: The rocker mechanism has been tested for a crisp, "positive" click action, ensuring it doesn't "arc" or remain stuck in the partially engaged position.
Contact Integrity: Internal electrical contacts are clean and free of oxidation/pitting, ensuring low electrical resistance and cool operation under load.
Terminal Health: The spade-style terminals are in excellent condition, ensuring a tight, secure fit for your wiring harness.
Genuine Elegoo Factory Hardware: Guarantees 100% compatibility with the Neptune 4 Max’s power supply cutout and electrical harness. Aftermarket switches often vary in size or terminal orientation, which can lead to poor fitment or dangerous loose connections.
Heavy-Duty Construction: Rated specifically for the high-amperage, high-voltage requirements of a large-format 3D printer's power supply.
Ergonomic Rocker Design: Provides a tactile, clear indication of the "ON" (I) and "OFF" (O) state, matching your original factory interface.
High-Impact Casing: The housing is constructed from flame-retardant, high-impact thermoplastic to ensure safety in the event of a fault.
Intermittent Power: Fixes a printer that cuts out randomly or requires "wiggling" the switch to stay powered on.
"Sticky" or Unresponsive Switch: Resolves a switch that is physically stuck or no longer clicks into the "ON" position.
No Power / "Dead" Printer: If your wall outlet is confirmed working and the power cable is fine, a failed internal switch is often the culprit for a complete "no-power" state.
Visible Arcing/Sparking: Replace immediately if you notice flickering lights or buzzing sounds from the switch area, which indicate internal contact failure.
| Attribute | Specification |
| Compatible Model | Elegoo Neptune 4 Max |
| Component Type | Main AC Power Rocker Switch |
| Condition | Used Original OEM (Tested, Performance Verified) |
| Donor Origin | Authenticated Elegoo Neptune 4 Max Pull |