Revolution Toggle Switch On/off/on Spdt 20A 12V 3 Terminals Part No. 56-90124BLR

The Revolution Toggle Switch On/Off/On SPDT is a compact automotive electrical switch rated at 20A at 12V, with three positions and three terminals for straightforward control wiring. It carries part number 56-90124BLR and is supplied as a non-illuminated switch with a 12mm mount diameter.

This switch uses an On - Off - On SPDT action, which makes it suitable for applications that need a centre-off position with control in either direction. The body is listed at 29mm mount length and weighs 0.04kg, so it is a small-format switch intended for neat panel installation.

As a Revolution branded switch, it sits in the auto electrical accessories range and is supplied as each. The contacts are rated to 20A at 12V, so the key checks before purchase are voltage, current load, panel cut-out size, and whether your circuit calls for a 3-terminal SPDT toggle with three positions.

Key Features

• On / Off / On SPDT toggle action
• 20A contact rating at 12V
• 3 terminals and 1 pole
• 12mm mount diameter
• 29mm mount length
• Non-illuminated switch

Specifications

• Brand: Revolution
• Part No.: 56-90124BLR
• Product type: Switch
• Switch type: Toggle
• Switch action: On - Off - On - SPDT
• Number of positions: 3
• Number of terminals: 3
• Number of poles: 1

Application and Buying Notes

Check the part number 56-90124BLR first, then compare the switch action against your existing setup. An On - Off - On SPDT switch has three positions and three terminals, so it is only suitable where the circuit is designed for that arrangement rather than a simple on/off function.

Measure the panel opening before ordering. The listed mount diameter is 12mm and the mount length is 29mm, so the switch needs to suit both the hole size and the available depth behind the panel. That matters in compact dash panels, accessory consoles, and custom electrical installs where clearance can be tight.

The 20A rating at 12V is an important limit to respect. Match the switch to the actual load and wiring design used in your application, and do not assume it is suitable for higher current or different voltage requirements. If the circuit uses relays, the switch may only be controlling the relay side of the circuit rather than the full load.

Because this switch is non illuminated and the lamp colour is not applicable, it is best suited to applications where an indicator light is not required. If your original switch includes illumination, an indicator lens, or a different terminal arrangement, those details need to be checked carefully before replacement.

The 1-pole, 3-terminal layout is a practical clue for compatibility. It helps confirm whether the switch matches the original wiring logic, but it is not enough on its own if the vehicle or machine uses a unique connector, locking style, or mounting method. Compare the physical switch, wiring, and panel dimensions together before buying.

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 56-90124BLR 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, Mount Diameter 12mm, Number of Poles 1, Switch Type Toggle, Weight .04kg, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. 56-90124BLR, Brand REVOLUTION, Description Revolution Toggle Switch On/Off/On SPDT (Contacts Rated 20A @ 12V), Number of Terminals 3, Switch Action On - Off - On - SPDT, Lamp Colour/s Not Applicable, Mount Length 29mm, Number of Positions 3, Switch Illumination Non Illuminated, Product Group 1 AUTO ELEC ACCESSORIES.

Revolution Toggle Switch On/Off/On SPDT (Contacts Rated 20A @ 12V). Part number 56-90124BLR 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 56-90124BLR, 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.

Compatibility note: Confirm fitment by comparing part number 56-90124BLR, the On - Off - On SPDT action, the 3-terminal layout, and the 12mm mount diameter with your existing switch and wiring before purchase.

FAQ

What type of switch is this?

It is a Revolution toggle switch with On - Off - On SPDT action, 1 pole, and 3 terminals. For this listing, part number 56-90124BLR 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 electrical rating?

The switch is rated at 20A and 12V. For this listing, part number 56-90124BLR 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 mounting hole does it need?

The listed mount diameter is 12mm. For this listing, part number 56-90124BLR 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?

No. It is listed as non illuminated, and lamp colour is not applicable. For this listing, part number 56-90124BLR 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 it have?

It has 3 terminals. For this listing, part number 56-90124BLR 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 part number should I match it to?

The part number is 56-90124BLR. For this listing, part number 56-90124BLR 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.