Hella Toggle Switch On/off Spst 20A 12V Part No. 4420

The HELLA Toggle Switch On/Off SPST is a two-position switch rated at 20A at 12V, with a 10A rating at 24V. It is a non-illuminated switch with 2 terminals and a single pole SPST contact arrangement, designed for straightforward on/off control in suitable vehicle electrical applications.

This switch has a 12mm mount diameter and requires a 12.5mm diameter opening. It is intended for panels up to 6mm thick, with a 6mm mount length. Those dimensions matter when you are matching the switch to an existing dash, console, or custom panel cut-out.

Identified as HELLA part number 4420, this unit is sold as a single switch. The specification set is clear on the electrical and mounting details, which makes it easier to check whether it suits the job before ordering rather than discovering a mismatch during installation.

Key Features

• On/Off SPST toggle switch
• Rated 20A at 12V
• Rated 10A at 24V
• 2 terminals, 1 pole
• Non-illuminated design
• Requires 12.5mm opening

Specifications

• Brand: HELLA
• Part No.: 4420
• Product type: Switch
• Switch type: Toggle
• Switch action: On - Off - SPST
• Number of positions: 2
• Number of poles: 1
• Number of terminals: 2

Application and Buying Notes

Before buying, check the panel opening carefully against the listed 12.5mm diameter opening and the 12mm mount diameter. The switch is also specified for panels up to 6mm thick, so panel thickness is just as important as the hole size when you are planning the install.

The electrical rating is 20A at 12V and 10A at 24V, so the switch should be selected for circuits that stay within those limits. It is a 2-terminal, 1-pole SPST switch with 2 positions, which means it is intended for simple on/off control rather than multi-circuit switching.

Because this is a non-illuminated toggle switch, it does not provide lamp colour or backlighting details. If your application relies on an illuminated switch for visibility or system status, that requirement needs to be checked before purchase.

Part number 4420 is the most useful reference point when comparing replacements. If you are replacing an existing switch, compare the part number, terminal count, mounting size, and panel thickness allowance together rather than relying on appearance alone.

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 4420 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 Three Years, Power Rating (Amp) 20, 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. 4420, Brand HELLA, Description Hella Toggle Switch On/Off SPST (Contacts Rated 20A @ 12V), Number of Terminals 2, Switch Action On - Off - SPST, Lamp Colour/s Not Applicable, Mount Length 6mm, Number of Positions 2, Switch Illumination Non Illuminated, Product Group 1 AUTO ELEC ACCESSORIES.

Hella Toggle Switch On/Off SPST (Contacts Rated 20A @ 12V). Part number 4420 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 4420, 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.

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.

Compatibility note: Confirm compatibility by checking HELLA part number 4420, the 12.5mm opening, 12mm mount diameter, 6mm mount length, and the 20A at 12V / 10A at 24V electrical ratings against your vehicle or panel application before ordering.

FAQ

What type of switch is this?

It is a HELLA toggle switch with On - Off - SPST action. The unit has 2 positions, 1 pole, and 2 terminals. For this listing, part number 4420 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 are the electrical ratings?

The switch is rated at 20A at 12V and 10A at 24V. For this listing, part number 4420 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 hole does it need?

It requires a 12.5mm diameter opening and has a 12mm mount diameter. For this listing, part number 4420 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 thick can the panel be?

It is specified for panels up to 6mm thick, with a 6mm mount length. For this listing, part number 4420 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. The switch is listed as non illuminated, and lamp colour is not applicable. For this listing, part number 4420 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 use when checking compatibility?

Use HELLA part number 4420 when matching the switch to an existing application or replacement requirement. For this listing, part number 4420 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.