Thunder Rocker Switch On/off Spst 12 Or 24V Blue Illuminated 20A TDR11010

The Thunder rocker switch, part number TDR11010, is an On/Off SPST switch designed for 12 or 24 volt use. It has a blue illuminated lamp and contacts rated at 20A @ 12V, making it a practical option where a simple single-pole on/off control is required.

This switch uses a 5 terminal layout and a rocker-style action with 2 positions. The stated mount size is 36mm x 20mm, so the opening needs to match those dimensions for a proper fit. It is listed for use as a roof lights switch, but the key checks remain the same: voltage, terminal count, and mounting size.

As supplied, this is sold as each and carries a one year warranty. The brand is Thunder, and the product group places it within auto electrical accessories and fuses, breakers, relays and switches. For buyers replacing a switch or planning a new installation, the part number TDR11010 and the 36x20mm mounting hole are the most important identifiers to confirm before ordering.

Key Features

• On/Off SPST switch action
• Blue illuminated rocker
• Suitable for 12V or 24V systems
• Contacts rated 20A @ 12V
• 5 terminal design
• 36mm x 20mm mounting size

Specifications

• Brand: Thunder
• Part No.: TDR11010
• Product type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Voltage: 12 or 24
• Power rating: 20 amp
• Lamp colour: Blue

Application and Buying Notes

Before buying, match the switch to the vehicle’s electrical system voltage. This Thunder unit is listed for 12 or 24 volt systems, so the vehicle or circuit should be checked first. The switch is an SPST On/Off design, which means it is intended for a simple single circuit switching job rather than a multi-function control arrangement.

The mounting opening is stated as 36mm x 20mm. That dimension matters as much as the electrical rating, because even a suitable switch will not install correctly if the panel cut-out is different. The switch also has 5 terminals, so it is worth comparing the existing wiring arrangement before removal, especially if the original switch has a different terminal count or layout.

The current rating is listed as 20A @ 12V. That is an important guide for the circuit load, but the final suitability still depends on how the accessory is wired and what it is being asked to control. For roof lights or other auxiliary accessories, confirm the actual circuit demand and make sure the wiring, fuse protection and connectors are all appropriate for the application.

Blue illumination is included, which can be useful for locating the switch in low light and for matching an existing interior style. If you are replacing a failed unit, the part number TDR11010 is the clearest reference to use. When a panel already has a cut-out in place, checking the mount width of 20mm and mount length of 36mm can save time and avoid incorrect purchases.

This is sold as each, so if the vehicle uses multiple identical switches, make sure the quantity you order reflects the full job rather than just one position. The one year warranty applies to the product as listed, but it does not replace the need to confirm physical fit, terminal layout and electrical suitability before installation.

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 TDR11010 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. TDR11010, 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 TDR11010 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 TDR11010, 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.

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 compatibility using part number TDR11010, the 36mm x 20mm mounting hole size, the 5 terminal layout, and the stated 12 or 24 volt SPST On/Off application before purchase.

FAQ

What is the part number for this Thunder rocker switch?

The part number is TDR11010.

Is this switch suitable for 12V and 24V systems?

Yes. It is listed for 12 or 24 volt use.

What kind of switch action does it have?

It is an On - Off - SPST rocker switch with 2 positions and 1 pole.

How many terminals does it have?

It has 5 terminals.

What is the mounting size?

The stated mount size is 36mm x 20mm.

Is the switch illuminated?

Yes. It has blue illumination.