Narva Rocker Switch Off/on Spst Blue LED 20A 12V Part No. 62037BL

The Narva Rocker Switch Off/On SPST Blue LED is a compact 12V switch with a 20A amperage rating and a 20mm mounting opening. It is supplied as a single-pole single-throw (SPST) rocker switch with 3 terminals and an illuminated blue LED, making it suitable where a clear on/off control is needed in a neat panel installation.

This switch is listed with a push fit design, push on terminals, and a waterproof neoprene boot. It is also IP65 rated, which is a useful feature where dust resistance and protection against water ingress matter. The mount diameter is 20mm, and the mounting length is 3mm, so panel preparation should be checked carefully before installation.

The part number is 62037BL, and the unit is sold each. As a Narva switch in the auto electrical accessories group, it is a practical option for 12V applications where the current draw stays within the stated 20A rating and the installer wants a simple illuminated rocker style control.

Key Features

• SPST rocker switch
• Blue LED illumination
• IP65 rated
• Push fit design with push on terminals
• Waterproof neoprene boot included
• 20mm mounting opening

Specifications

• Brand: Narva
• Part No.: 62037BL
• Product type: Switch
• Switch action: On - Off - SPST
• Switch type: Rocker
• Number of poles: 1
• Number of positions: 2
• Number of terminals: 3

Application and Buying Notes

Before ordering, confirm the panel has a 20mm diameter mounting opening and enough clearance for the switch body, noting the listed mount length is 3mm. The switch uses 3 terminals and an SPST On-Off action, so it needs to suit the circuit you are controlling and the way your existing wiring is arranged.

The electrical rating is the key point here. The feature listing states 20A for use at 12V only, while the spec listing also shows a 30A power rating. When selecting the switch, the safer approach is to work to the stated 20A at 12V application detail and verify that your load, wiring, and protection are suitable for the circuit.

Because this is an illuminated switch with a blue LED, it is worth checking whether you want an indicator light that remains visible when the switch is in use. The push on terminals and waterproof neoprene boot are helpful for a cleaner install, but the installer still needs to make sure the terminals match the wiring style and that the switch will be mounted in a suitable position for access and protection.

If you are replacing an existing switch, part number 62037BL is the most reliable identifier to compare first. Matching the part number, the 20mm mounting hole, the 3-terminal layout, and the 12V On-Off SPST operation will give you the best chance of ordering the correct item for the job.

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 62037BL 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) 30, Voltage 12, Mount Diameter 20mm, Number of Poles 1, Switch Type Rocker, Weight 0.01kg, Product Group 1 AUTO ELEC ACCESSORIES.

Additional published details for cross-checking include Part No. 62037BL, Brand NARVA, Description Narva Rocker Switch Off/On SPST Blue LED (Contacts Rated 20A @ 12V), Number of Terminals 3, Switch Action On - Off - SPST, Lamp Colour/s Blue, Mount Length 3mm, Number of Positions 2, Switch Illumination Illuminated.

Narva Rocker Switch Off/On SPST Blue LED (Contacts Rated 20A @ 12V). Part number 62037BL should be checked first. Listed voltage is 12. Listed output rating is 30. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 62037BL, 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 30 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: Please confirm fitment using part number 62037BL, the 20mm mounting opening, the 3-terminal SPST On-Off layout, and the 12V 20A application details before purchase.

FAQ

What type of switch is this?

It is a Narva rocker switch with SPST On-Off action, 1 pole, and 2 positions. It uses 3 terminals and is intended for 12V applications.

What size hole does it need?

The listed mounting opening is 20mm diameter. The mount length is 3mm, so panel thickness and clearance should also be checked during installation.

Is the switch illuminated?

Yes. It is an illuminated switch with a blue LED lamp colour.

What is the current rating?

The feature listing states an amperage rating of 20A for use at 12V only. The spec listing also shows a power rating of 30A, so the application details should be checked carefully before use.

Does it have weather protection?

Yes. It is listed as IP65 rated and includes a waterproof neoprene boot.

What part number should I use to confirm I have the right item?

The part number is 62037BL. Matching that number, along with the 20mm mounting size and 3-terminal SPST On-Off format, is the best way to confirm the correct switch.