Cole Hersee Toggle Switch Spdt Momentary On/off/momentary On, 12V 25A, Part No. 55021-07BL

The Cole Hersee toggle switch listed here is a SPDT momentary On/Off/momentary On unit with 3 terminals, designed for 12/24V use and rated at 25A at 12V or 12A at 24V. It suits installations where a spring-return style switch action is required and where the installer wants a compact panel-mounted switch with a 12mm mount diameter.

This switch uses silver contacts, a pre-wired PVC coated housing, and an O-ring in the stem for added sealing at the stem area. The stem thread is 15/32-32, with a stem length of 12mm and stem diameter of 12mm, while the handle length is 17mm. Overall dimensions are H 34 x D 55 x W 19mm.

The part number is 55021-07BL and the product is identified as a Cole Hersee Toggle Switch SPDT Momentary On/Off/Momentary On Screw Terminals. It is non-illuminated, has no lamp colour specified, and carries a one-year warranty.

Key Features

• 12/24V dual voltage
• 25A at 12V, 12A at 24V
• SPDT Mom On / Off / Mom On
• 3 terminals
• Silver contacts
• O-ring in stem

Specifications

• Brand: Cole Hersee
• Part No.: 55021-07BL
• Product type: Switch
• Switch type: Toggle
• Switch action: Mom On - Off - Mom On - SPDT
• Number of poles: 1
• Number of positions: 3
• Voltage: 12V / 24V

Application and Buying Notes

Check the switch action carefully before ordering. This unit is SPDT with a momentary On/Off/momentary On pattern, so it is suitable where the circuit needs a spring-return action rather than a maintained On position. The 3-terminal layout and single-pole construction should also match the circuit design you are working with, rather than replacing a different terminal count or switch logic.

Confirm the mounting measurements against your panel before purchase. The mounting diameter is 12mm, the panel thickness listed is 6.35mm, and the stem uses a 15/32-32 thread with a 12mm stem length. Those details matter if you are fitting it into an existing dash, console, or control panel opening and need the hardware to seat correctly.

The current rating changes with system voltage, so match the switch to the electrical load you actually have. It is rated at 25A at 12V and 12A at 24V. For heavier circuits, verify the load draw rather than assuming the switch is suitable just because the voltage matches. The pre-wired, PVC coated housing and silver contacts are useful construction details, but the switch still needs to be chosen for the correct circuit duty.

If you are replacing an existing switch, the part number 55021-07BL and the described Cole Hersee toggle switch type are the safest references to compare. Also note that this is a non-illuminated switch with no lamp specified, so it should only be chosen where illumination is not required. The one-year warranty applies to the product as listed, and does not remove the need to confirm the electrical and physical match 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 55021-07BL 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) 25, Voltage 12, Mount Diameter 12mm, Number of Poles 1, Switch Type Toggle, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. 55021-07BL, Brand COLE HERSEE, Description Cole Hersee Toggle Switch SPDT Momentary On/Off/Momentary On Screw Terminals, Number of Terminals 3, Switch Action Mom On - Off - Mom On - SPDT, Lamp Colour/s Not Applicable, Mount Length 6mm, Number of Positions 3, Switch Illumination Non Illuminated, Product Group 1 AUTO ELEC ACCESSORIES.

Cole Hersee Toggle Switch SPDT Momentary On/Off/Momentary On Screw Terminals. Part number 55021-07BL should be checked first. Listed voltage is 12. Listed output rating is 25. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number 55021-07BL, 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 25 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.

The listed warranty is One Year. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Please confirm fitment by matching the part number 55021-07BL, the SPDT momentary On/Off/momentary On action, the 3-terminal layout, and the 12mm mount diameter against your existing application before ordering.

FAQ

What is the part number for this Cole Hersee switch?

The part number is 55021-07BL.

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

Yes. It is listed as 12/24V dual voltage, with a 25A rating at 12V and a 12A rating at 24V.

How many terminals does the switch have?

It has 3 terminals.

What switch action does it use?

It is SPDT with a momentary On / Off / momentary On action.

What mounting size should be checked before fitting?

The mount diameter is 12mm, and the panel thickness listed is 6.35mm.

Is the switch illuminated?

No. It is listed as non-illuminated, and the lamp colour is not applicable.