Thunder Rocker Switch On/off Spst 12 Or 24V Blue Illuminated 20A TDR11020

The Thunder rocker switch, part number TDR11020, is a 2-position On/Off SPST switch designed for 12 or 24 volt systems. It has blue illumination, 5 terminals, and contacts rated at 20A @ 12V, making it a practical option where a simple illuminated control is needed.

It is listed as a fog light switch and uses a rocker-style layout with 36 x 20mm mounting hole dimensions. The switch measures 36mm long by 20mm wide at the mount, so checking the cut-out before ordering is important.

This unit is sold as each and carries a one year warranty. The listed weight is 1kg, and the product sits in the auto electrical accessories group alongside fuses, breakers, relays, and switches.

For a neat installation, the key checks are supply voltage, panel opening size, terminal count, and whether an illuminated blue switch is suitable for the application. The switch action is On - Off - SPST, with one pole and two positions.

Key Features

• Thunder brand rocker switch
• On/Off SPST action
• Blue illuminated switch
• Suitable for 12 or 24 volt systems
• Contacts rated 20A @ 12V
• 5 terminals

Specifications

• Part No.: TDR11020
• Brand: Thunder
• Type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Number of poles: 1
• Number of positions: 2
• Number of terminals: 5

Application and Buying Notes

Before ordering, confirm the panel opening matches the 36 x 20mm mounting hole size and that your wiring setup suits a 5 terminal SPST rocker switch. The key identifiers here are part number TDR11020, 12 or 24 volt operation, and 20A @ 12V contact rating.

The blue illumination is built into the switch, which can help with visibility in low light, but it is still important to confirm that the chosen dash or switch panel has the space for a 36mm by 20mm cut-out. A mismatch in cut-out size is one of the most common reasons a switch does not install cleanly.

Because this is an On/Off SPST switch with one pole and two positions, it suits simple single-circuit switching rather than more complex multi-function control. Always compare the wiring layout in your vehicle or accessory system with the 5 terminal arrangement before fitting.

The listed 20A power rating is given at 12V, so it is sensible to keep expected load within the switch’s stated rating and allow for the rest of the circuit design, including any relays or protection devices used in the system. If the application is a fog light circuit, confirm the rest of the wiring is appropriate for the current draw.

The product is described as a Thunder rocker switch and is supplied as each with a one year warranty. For a parts counter style check, the safest approach is to match the part number TDR11020, confirm the voltage, and verify the mount dimensions 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 TDR11020 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, Number of Terminals 5, Switch Action On - Off - SPST, Lamp Colour/s Blue, Number of Poles 1, Switch Type Rocker, Weight 1kg, Product Group 1 AUTO ELEC ACCESSORIES.

Additional published details for cross-checking include Part No. TDR11020, Brand THUNDER, Description Thunder Rocker Switch On/Off SPST 12 or 24V Blue Illuminated (Contacts Rated 20A @ 12V), Mount Width 20mm, Power Rating (Amp) 20, Voltage 12 or 24, Mount Length 36mm, Number of Positions 2, Switch Illumination Illuminated.

Thunder Rocker Switch On/Off SPST 12 or 24V Blue Illuminated (Contacts Rated 20A @ 12V). Part number TDR11020 should be checked first. Listed voltage is 12 or 24. Listed output rating is 20. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number TDR11020, 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 or 24 and output 20 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Please confirm compatibility by matching part number TDR11020, the 12 or 24 volt requirement, the 36 x 20mm mount size, and the 5 terminal SPST layout with your existing application before buying.

FAQ

What is the part number for this Thunder rocker switch?

The part number is TDR11020. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What voltage does this switch suit?

It is listed for 12 or 24 volt systems. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. 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 5 terminals. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What is the mounting hole size?

The listed mounting size is 36mm by 20mm. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

Is the switch illuminated?

Yes. It is listed as illuminated with blue lamp colour. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.

What is the switch action?

It is an On - Off - SPST rocker switch with one pole and two positions. For this listing, part number TDR11020 is the main reference point. Listed voltage is 12 or 24. Listed output rating is 20. These details should still be checked against the original unit before ordering.