Narva 63100BL Sealed Rocker Switch Off/On SPST 20A @ 12V

Professional-grade sealed rocker switch engineered for reliable automotive and marine 12V DC applications.

The Narva 63100BL is a sealed SPST rocker switch designed for demanding automotive, marine, and off-road electrical systems. Rated at 20A @ 12V (10A @ 24V), this single-pole, single-throw switch delivers dependable on/off control for auxiliary lighting, accessories, and electrical circuits. The sealed construction protects internal contacts from moisture, dust, and vibration, making it ideal for harsh Australian conditions—from dusty outback tracks to coastal marine environments.

With a compact 37.5mm x 21mm mounting footprint and push-on terminals for quick installation, the 63100BL suits workshop builds, 4WD fitouts, caravan upgrades, and trailer electrical systems. The non-illuminated black rocker maintains a clean, professional appearance on switch panels and dashboards.

Key Specifications

• Contact rating: 20A @ 12V DC, 10A @ 24V DC
• Switch configuration: SPST (Single Pole, Single Throw)
• Switch action: Off/On (2 positions)
• Mounting dimensions: 37.5mm x 21mm panel cutout required
• Terminal type: Push-on spade connectors (2 terminals)
• Construction: Sealed rocker design for moisture and dust resistance
• Weight: 0.04 kg
• Switch illumination: Non-illuminated
• Colour: Black
• Warranty: 1 year manufacturer warranty

Features & Benefits

Sealed Construction for Harsh Environments
The sealed rocker design protects internal contacts from moisture ingress, dust, and vibration. Perfect for under-bonnet applications, exposed switch panels on bull bars, or marine installations where spray and humidity are constant challenges.

20A Current Capacity
Handles substantial electrical loads including LED light bars, driving lights, winches, pumps, and cooling fans. The generous 20A @ 12V rating (10A @ 24V) provides headroom for demanding accessories without risk of contact overheating or failure.

Quick Push-On Terminals
Standard push-on spade terminals allow fast, tool-free wire connections during installation. Ideal for workshop efficiency and field repairs where crimped spade connectors are the automotive standard.

Compact Panel Mounting
The 37.5mm x 21mm mounting aperture suits most aftermarket switch panels, dash blanks, and custom console builds. Compact footprint maximizes available panel space for multi-switch arrays in 4WDs, caravans, and work vehicles.

Professional Non-Illuminated Design
Black rocker provides a clean, understated appearance suitable for OEM-style integrations and professional fitouts. Non-illuminated design eliminates unwanted dashboard glow during night driving.

Technical Specs

• Part Number: 63100BL
• Brand: Narva
• Switch Type: Rocker, sealed
• Poles: 1 (SPST)
• Positions: 2 (Off/On)
• Contact Rating: 20A @ 12V DC, 10A @ 24V DC
• Terminal Count: 2
• Terminal Style: Push-on spade
• Mounting Cutout: 37.5mm x 21mm
• Illumination: None (non-illuminated)
• Lamp Colour: Not applicable
• Weight: 0.04 kg (40 grams)
• Warranty Period: 1 year

Frequently Asked Questions

What size hole do I need to cut for installation? You'll need a rectangular panel cutout measuring 37.5mm x 21mm. Use a stepped drill or router for clean edges in plastic or metal panels.

Can this switch handle a 15A light bar on 12V? Yes, the 20A @ 12V rating provides adequate capacity for a 15A load with safe operational headroom. Always use appropriately rated fuse protection.

Is this switch waterproof for marine use? The sealed construction resists moisture and dust ingress, suitable for splash-prone areas. For full submersion or constant spray, consider additional panel sealing with gaskets.

What wire terminal size fits the push-on connectors? Standard 6.3mm (1/4 inch) push-on spade terminals are compatible. Use insulated or non-insulated crimp terminals rated for 20A current.

Does the switch illuminate when turned on? No, the 63100BL is non-illuminated. For backlit switches with LED indication, refer to Narva's illuminated rocker switch range.

Compatible With / Goes Well With

Typical Applications:

• Auxiliary driving lights and light bars (12V/24V systems)
• Electric winches and recovery equipment
• Caravan interior lighting circuits
• Marine bilge pumps and navigation lights
• 4WD accessory circuits (spotlights, beacons, UHF radios)
• Workshop and trailer electrical systems
• Cooling fans and air compressors

Pairs Well With:

• Automotive blade fuse holders (20A or 25A fuses)
• 6.3mm crimp-on spade terminals (insulated or non-insulated)
• Switch panel blanking plates and custom fascias
• 14–16 AWG automotive cable for 20A circuits
• Narva relay harnesses for high-current accessories

Note: Always install appropriate fuse protection rated at or below 20A for 12V circuits. Verify terminal crimps are secure and heat-shrink protected in exposed locations.