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BATTERY DOCTOR SPST On/Off Toggle Switch - Automotive Toggle Switches
BATTERY DOCTORAutomotive Toggle Switches

BATTERY DOCTOR SPST On/Off Toggle Switch

The BATTERY DOCTOR Automotive Switch is a panel-mount SPST toggle switch (MPN 20503) with an On/Off function, blue actuator and stem, and 1/4 in male terminals. It features illumination in the 'On' position and has 3…

SKU 3G-OTH-516143

Brand
BATTERY DOCTOR
Item
SPST On/Off Toggle Switch
Part Number
20503
Category
Automotive Toggle Switches
Available to Order
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

BATTERY DOCTOR
Manufacturer Part Number
20503
Type
SPST, On/Off, Blue, Blue
Features
Illuminates In "On" Position
Terminals
1/4 in Male
Stem Color
Blue
Connections
3
Switch Type
Toggle Switch
Contact Form
SPST
Actuator Color
Blue
Mounting Style
Panel Mount
Switch Function
On/Off

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BATTERY DOCTOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BATTERY DOCTOR Automotive Switch is a panel-mount SPST toggle switch (MPN 20503) with an On/Off function, blue actuator and stem, and 1/4 in male terminals. It features illumination in the 'On' position and has 3 connections.

Frequently Asked Questions

What is the BATTERY DOCTOR Automotive Switch 20503 used for?

This SPST toggle switch is used for simple On/Off control of 12V or 24V automotive circuits, such as auxiliary lights, fans, or pumps. Its blue illumination confirms the circuit is live, making it ideal for dashboards or control panels in vehicles, boats, and off-road equipment.

What are the specifications of the BATTERY DOCTOR toggle switch 20503?

The BATTERY DOCTOR 20503 is a panel-mount SPST toggle switch with On/Off function, blue actuator and stem, and 3 connections. It features 1/4 in male terminals and illuminates in the 'On' position. The switch is designed for automotive DC circuits and is supplied by 3G Electric.

Where to buy the BATTERY DOCTOR 20503 toggle switch worldwide?

3G Electric supplies the BATTERY DOCTOR 20503 toggle switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time; we source genuine industrial parts across 14 departments, including electrical and automotive switches.

How to install a BATTERY DOCTOR panel-mount toggle switch?

Drill a standard panel hole, insert the switch through the front, and secure with the included nut. Connect the 1/4 in male terminals: common to power, normally open to load, and ground for the illumination circuit. Ensure the circuit is off before wiring. 3G Electric can advise on compatible connectors.

Used in

Common applications for BATTERY DOCTOR
Fleet maintenance — Battery Doctor corrosion inhibitor MPN 16204 applied to battery terminals on trucks and buses to prevent acid buildup.
Heavy equipment electrical systems — Battery Doctor toggle switch MPN 20561 used for on/off control of auxiliary lighting on construction machinery.
Vehicle panel mounting — Battery Doctor switch panel MPN 20591 used to mount indicator lights in truck cabs.
Marine battery systems — Battery Doctor corrosion inhibitor MPN 16201 applied to terminal connections to reduce corrosion in humid environments.
Industrial battery rooms — Battery Doctor switch panel MPN 20590 used to organize control switches for stationary battery banks.
Bus electrical maintenance — Battery Doctor toggle switch with guard MPN 20565 installed to prevent accidental activation of battery disconnect circuits.
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BATTERY DOCTOR Products

3G Electric supplies BATTERY DOCTOR automotive toggle switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SPST toggle switch with Off/On function, silver actuator, black stem, and duckbill toggle design. Features two 1/4 in male terminals for panel mounting in automotive electrical systems. Suitable for battery disconnect, accessory control, or general 12 VDC circuit switching in vehicles, boats, and off-road equipment
BATTERY DOCTOR
SPST toggle switch with Off/On function, silver actuator, black stem, and duckbill toggle design. Features two 1/4 in male terminals for panel mounting in automotive electrical systems. Suitable for battery disconnect, accessory control, or general 12 VDC circuit switching in vehicles, boats, and off-road equipment

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