Narva Sealed Rocker Switch Off/on Spst 12V Blue Illuminated 20A Part No. 63123BL

The Narva sealed rocker switch, part no. 63123BL, is an Off/On SPST switch designed for 12V applications with contacts rated to 20A at 12V. It uses a rocker switch action with 2 positions, 1 pole, and 5 terminals, so it suits straightforward single-circuit control where a compact, illuminated dash switch is required.

This switch includes blue illumination with both “Dash Light” and “On” illumination, which helps give a clear visual indication in the cabin or control panel. The mounting opening is 37.5mm x 21mm, and the mounting length is listed at 37.5mm, so the available panel space needs to be checked before purchase.

As a sealed switch, it is aimed at applications where added protection is useful, but the key installation points remain the same: confirm the 12V system voltage, the 20A current requirement, the 37.5mm x 21mm cut-out, and the 5 push-on terminal arrangement. The unit is sold each and carries a one year warranty.

Key Features

• Sealed rocker switch
• Off/On SPST function
• 12V only
• 20A contact rating
• Blue illuminated with “Dash Light” and “On” lighting
• 5 push-on terminals

Specifications

• Brand: Narva
• Part No.: 63123BL
• Product type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Number of positions: 2
• Number of poles: 1
• Number of terminals: 5

Application and Buying Notes

Before ordering, check the control panel or dash cut-out against the listed mounting opening of 37.5mm x 21mm. The overall mounting length is 37.5mm, so space behind the panel matters as well as the face opening. If the opening is smaller or shaped differently, the switch will not be a direct fit.

Electrical compatibility is just as important as the physical opening. This Narva switch is rated at 20A for use at 12V only, so it should be matched to a 12V circuit and a load within that current rating. If the circuit draws more than 20A, or if the vehicle runs a different system voltage, this switch is not suitable without proper circuit design changes.

The switch uses 5 push-on terminals and an SPST On - Off layout. That means the existing wiring needs to suit a single-pole, single-throw style switch with the correct terminal arrangement. Always confirm the terminal style, wiring logic, and whether the application needs the blue illumination function before fitting.

The blue lamp arrangement with “Dash Light” and “On” illumination is useful when you want the switch to be visible in low light and indicate when the circuit is active. If the existing panel uses another lamp colour or a non-illuminated switch, allow for the wiring and appearance differences before replacing the unit.

At 0.04kg, it is a light compact switch, but the important checks remain the same: part no. 63123BL, 12V system voltage, 20A rating, 37.5mm x 21mm mounting opening, and 5 terminals. Those details are the practical points that should be confirmed against the vehicle, accessory panel, or existing switch before purchase.

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 63123BL 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, Item Type Switch, Weight 0.04kg, Product Group 1 AUTO ELEC ACCESSORIES.

Additional published details for cross-checking include Part No. 63123BL, Brand NARVA, Description Narva Sealed Rocker Switch Off/On SPST 12V Blue Illuminated (Contacts Rated 20A @ 12V), Number of Terminals 5, Switch Action On - Off - SPST, Lamp Colour/s Blue, Number of Poles 1, Switch Type Rocker, Switch Illumination Illuminated.

Narva Sealed Rocker Switch Off/On SPST 12V Blue Illuminated (Contacts Rated 20A @ 12V). Part number 63123BL 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 63123BL, 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.

In the absence of a verified fitment list, the safest approach is to compare the removed unit directly with the listed product details. That includes checking the housing style, pulley layout, regulator arrangement, and any visible identification numbers before supply is approved.

The listed warranty is One Year. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Confirm fitment by checking the part number 63123BL, the 12V system requirement, the 20A rating, the 37.5mm x 21mm mounting opening, and the 5-terminal SPST layout against your existing switch and panel before ordering.

FAQ

What is the part number for this Narva rocker switch?

The part number is 63123BL.

What voltage is this switch designed for?

It is rated for 12V use only.

What is the current rating?

The contact rating is 20A at 12V.

How many terminals does it have?

It has 5 push-on terminals.

What size cut-out does it need?

The mounting opening is 37.5mm x 21mm.

Is the switch illuminated?

Yes. It has blue illumination with both “Dash Light” and “On” illumination.