Narva Sealed Rocker Switch Off/on Spdt 12V Blue Illuminated Roof Lights Symbol 20A Part No. 63146BL

The Narva Sealed Rocker Switch is an Off/On SPDT rocker switch rated at 20A for use at 12V only. It is identified by part number 63146BL and features blue illumination with both “Dash Light” and “On” lighting for clear switch identification in the cab.

This switch uses a mounting opening of 37.5mm x 21mm and has a mount length of 37.5mm. It is a 5-terminal, single-pole rocker switch with push on terminals, which makes the physical mounting and electrical connection points important to check before ordering.

The face marking is described as a roof lights symbol, which makes it suitable where a clearly marked illuminated switch is needed for auxiliary lighting control. The unit is supplied as each and carries a one year warranty.

Key Features

• 20A amperage rating at 12V only
• Off/On SPDT rocker switch
• Blue illuminated with “Dash Light” and “On” lights
• 5 terminals with push on terminals
• Mounting opening: 37.5mm x 21mm

Specifications

• Brand: Narva
• Part No.: 63146BL
• Product type: Switch
• Switch type: Rocker
• Switch action: Off - On
• Number of positions: 2
• Number of poles: 1
• Number of terminals: 5

Application and Buying Notes

Before ordering, check the panel opening carefully. The required mounting opening is 37.5mm x 21mm, and the listed mount length is 37.5mm, so the switch needs to suit both the aperture and the available depth in the dash or switch panel.

Electrical compatibility matters just as much as the physical size. This Narva rocker switch is rated at 20A and is for 12V use only, so it should only be matched to a circuit that stays within those limits. The switch is SPDT with 5 terminals, so the terminal layout should be checked against the wiring plan you intend to use.

The illuminated face is blue and includes both “Dash Light” and “On” illumination. That is useful when a lit switch is preferred for night visibility, but it is still important to confirm the symbol and illumination style suit the vehicle or accessory setup before purchase.

Because no verified vehicle fitment list is supplied, the safest approach is to match the part number 63146BL, the 37.5mm x 21mm mounting opening, the 5-terminal layout, and the 12V/20A rating against the existing switch or the installation requirements. That is the most reliable way to avoid ordering the wrong unit.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number 63146BL helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type SWITCH, Unit of Measure EACH, Warranty One Year, Power Rating (Amp) 20, Voltage 12, Mount Length 37.5mm, Number of Positions 2, Switch Illumination Illuminated, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. 63146BL, Brand NARVA, Description Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Roof Lights Symbol (Contacts Rated 20A @ 12V), Number of Terminals 5, Switch Action Off - On, Lamp Colour/s Blue, Number of Poles 1, Switch Type Rocker, Weight 0.04kg, Product Group 1 AUTO ELEC ACCESSORIES.

Narva Sealed Rocker Switch Off/On SPDT 12V Blue Illuminated Roof Lights Symbol (Contacts Rated 20A @ 12V). Part number 63146BL should be checked first. Listed voltage is 12. Listed output rating is 20. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 63146BL, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a switch in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 20 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Where no verified application list is available, the part number, mounting details, connector style, and published specifications should be used as the primary selection criteria.

Compatibility note: Confirm compatibility by checking part number 63146BL, the 37.5mm x 21mm mounting opening, 12V operation, 20A rating, and the 5-terminal SPDT layout against your vehicle or accessory wiring before purchase.

FAQ

What is the part number for this Narva rocker switch?

The part number is 63146BL. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What voltage and current rating does it have?

It is rated at 12V only and 20A. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.

How many terminals does the switch have?

It has 5 terminals. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What is the mounting opening size?

The mounting opening is 37.5mm x 21mm. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.

Is the switch illuminated?

Yes. It is described as illuminated with blue lamp colour, and it includes “Dash Light” and “On” illumination. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.

Is vehicle fitment listed for this switch?

No verified vehicle fitment is supplied. Check the part number 63146BL, the 37.5mm x 21mm mounting opening, and the 12V/20A rating against your application before buying. For this listing, part number 63146BL is the main reference point. Listed voltage is 12. Listed output rating is 20. These details should still be checked against the original unit before ordering.