Narva Rocker Switch Off/on Dpst Red LED 20A 12V Part No. 63021BL

The Narva Rocker Switch Off/On DPST is a 12V switch with contacts rated at 20A, supplied as an illuminated rocker with a red lamp colour. It is identified as part number 63021BL and uses a 4-terminal layout with 2 poles and 2 positions, which makes it important to match the switch style and terminal arrangement to the job before installation.

This switch is designed as a push fit unit with 6.3mm push-on blade terminals and a mounting opening of 34.5 x 2mm. Those dimensions matter, because rocker switch cut-outs vary and a close physical check is the best way to avoid a poor fit or unnecessary modification.

The switch action is listed as On - Off - DPST, with illumination built in. It weighs 0.02kg and is supplied as each, which is useful if you are replacing a single switch in an automotive electrical panel or accessory setup where the original aperture and wiring style need to be kept consistent.

Key Features

• Narva illuminated rocker switch
• Off/On DPST switch action
• 20A rating at 12V only
• Red LED lamp colour
• 4 terminals with 2 poles
• 6.3mm push-on blade terminals

Specifications

• Brand: Narva
• Part No.: 63021BL
• Product type: Switch
• Switch type: Rocker
• Switch illumination: Illuminated
• Power rating: 20A
• Voltage: 12V
• Number of poles: 2

Application and Buying Notes

Before ordering, check the part number 63021BL and compare the existing switch layout with the 4-terminal, 2-pole DPST arrangement listed here. That is the safest way to confirm you are looking at the same style of switch, especially when replacing a switch in a custom panel or an existing factory opening.

The mounting opening is specified as 34.5 x 2mm, so physical size should be checked against the cut-out in your panel. Even a correct electrical switch can be unsuitable if the aperture, blade terminal style, or depth requirements do not line up with the space available behind the dash or accessory panel.

Electrical rating also needs to be respected. This switch is rated at 20A at 12V only, so it should only be used within that limit. Matching the voltage and current draw of the circuit is essential, particularly where the switch is being used for accessories that can place a steady load on the contacts.

The 6.3mm push-on blade terminals are a practical clue for wiring compatibility. If your existing harness uses a different terminal size or connector style, factor that in before purchase so you are not left needing adaptors or rewiring to complete the installation.

Because the switch is illuminated with a red lamp colour, it is worth confirming that the lighting style suits your application and the appearance of the panel. The illumination can help with visibility, but the key compatibility points remain the mounting opening, terminal style, pole count, and the 12V 20A rating.

If you are replacing an existing Narva switch or another similar DPST rocker, keep the original switch in hand when comparing sizes and terminals. A visual and measurement check against the existing part is often the quickest way to confirm whether this switch is the correct replacement before you commit to fitting it.

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 63021BL 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, Number of Poles 2, Switch Type Rocker, Weight 0.02kg, Product Group 1 AUTO ELEC ACCESSORIES, Part No. 63021BL.

Additional published details for cross-checking include Brand NARVA, Description Narva Rocker Switch Off/On DPST Red LED (Contacts Rated 20A @ 12V), Number of Terminals 4, Switch Action On - Off - DPST, Lamp Colour/s Red, Number of Positions 2, Switch Illumination Illuminated, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Narva Rocker Switch Off/On DPST Red LED (Contacts Rated 20A @ 12V). Part number 63021BL 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 63021BL, 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.

Compatibility note: Confirm fitment by checking part number 63021BL, the 34.5 x 2mm mounting opening, the 4-terminal 2-pole DPST layout, and the 6.3mm push-on blade terminals against your existing switch and panel before buying.

FAQ

What is the part number for this Narva rocker switch?

The part number is 63021BL.

What electrical rating does the switch have?

It is rated at 20A at 12V only.

How many terminals does it have?

It has 4 terminals.

What is the mounting opening size?

The mounting opening is 34.5 x 2mm.

Is the switch illuminated?

Yes. It is listed as illuminated with a red lamp colour.

What should I check before ordering?

Check the part number, the 34.5 x 2mm mounting opening, the 6.3mm push-on blade terminals, and the 4-terminal DPST layout to make sure they match your existing switch and panel.