Narva Heavy Duty Rocker Switch Off/on Spst Red Illuminated 20A 12V Part No. 63047BL

The Narva Heavy Duty Rocker Switch Off/On is a 1-pole SPST switch rated at 20A for use at 12V only. It uses a rocker style action with 2 positions, and the lamp colour is red for illuminated identification in the cabin or panel.

This switch is supplied as a push fit design with push on terminals and has 3 terminals in total. The mounting opening is 37.5 x 21mm, so it is important to check the cut-out size before fitting to confirm the panel accepts that footprint.

Part number 63047BL is packed as a blister pack item and is sold as each. For buyers replacing an existing switch, matching the physical opening, terminal style and 12V 20A rating is a practical first step before purchase.

Key Features

• SPST rocker switch
• Red illuminated lamp
• Push fit design with push on terminals
• 3 terminals
• Mounting opening 37.5 x 21mm
• Rated 20A at 12V only

Specifications

• Brand: Narva
• Part No.: 63047BL
• Product type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Number of poles: 1
• Number of positions: 2
• Number of terminals: 3

Application and Buying Notes

Before ordering, confirm the existing switch location accepts a 37.5 x 21mm mounting opening and that the circuit is intended for 12V operation. The switch is rated at 20A for use at 12V only, so it should not be selected for a higher voltage circuit or a load beyond the stated amperage.

The switch uses an SPST arrangement with 3 terminals and push on terminals, which means the existing wiring layout needs to suit that style of connection. If you are replacing a failed switch, compare the old unit’s terminal count, switch action and cut-out dimensions carefully against part number 63047BL.

The illuminated red lamp is a useful visual indicator, but it does not change the basic switching specification. What matters most for compatibility is the combination of 1-pole SPST operation, 20A rating, 12V requirement and the physical panel opening. Matching those details helps avoid buying the wrong switch for the job.

This is a Narva heavy duty rocker switch sold individually and supplied in blister pack form. If you are planning a repair or custom install, allow for the panel thickness, terminal access and wiring space behind the dash or console, as these factors can affect whether a push fit rocker is practical in the chosen position.

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 63047BL 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 1, Switch Type Rocker, Switch Illumination Illuminated, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. 63047BL, Brand NARVA, Description Narva Heavy Duty Rocker Switch Off/On SPST Red Illuminated (Contacts Rated 20A @ 12V), Number of Terminals 3, Switch Action On - Off - SPST, Lamp Colour/s Red, Number of Positions 2, Item Type Switch, Weight 0.025kg, Product Group 1 AUTO ELEC ACCESSORIES.

Narva Heavy Duty Rocker Switch Off/On SPST Red Illuminated (Contacts Rated 20A @ 12V). Part number 63047BL 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 63047BL, 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 fitment by checking part number 63047BL, the 37.5 x 21mm mounting opening, 3-terminal push on connection style, and the 20A 12V SPST specification before purchasing.

FAQ

Is this switch suitable for 12V use?

Yes. The listed voltage is 12V only, and the amperage rating is 20A at 12V. For this listing, part number 63047BL 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 3 terminals. For this listing, part number 63047BL 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 size panel opening does it require?

The mounting opening is 37.5 x 21mm. For this listing, part number 63047BL 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. The lamp colour is red and the switch is described as illuminated. For this listing, part number 63047BL 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 switch action?

It is listed as On - Off - SPST and uses a rocker switch type with 2 positions. For this listing, part number 63047BL 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 warranty is listed?

The listed warranty is one year. For this listing, part number 63047BL 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.