OEX Rocker Switch On/off Spst 12V Red Illuminated 20A ACX3784BL

The OEX Rocker Switch is an On/Off SPST switch rated at 20A at 12V, with red illumination and three blade terminals. It is listed under part number ACX3784BL and uses a 2-position On - Off / SPST switching action, which makes the electrical layout straightforward for standard 12V accessory circuits.

Its mounting opening is 37.50mm x 21.00mm, so panel sizing matters before purchase. The switch is a rocker type, has one pole, and is supplied as an each unit, which is useful when replacing a single switch in an existing dashboard or accessory panel.

The illuminated red lamp gives the switch a visible status indication in low light, while the 3 blade terminals provide the connection style stated for this unit. As with any 12V switch, the rated current of 20A @ 12V should be matched to the circuit load and the application intended for the vehicle or equipment.

Key Features

• On/Off SPST rocker switch
• Red illumination
• 3 blade terminals
• 2-position switch action
• Rated 20A at 12V
• Mounting opening: 37.50mm x 21.00mm

Specifications

• Brand: OEX
• Part No.: ACX3784BL
• Product type: Switch
• Switch type: Rocker
• Switch action: On - Off - SPST
• Number of poles: 1
• Number of terminals: 3
• Power rating: 20 amp

Application and Buying Notes

Before ordering, check the panel cut-out against the stated mounting opening of 37.50mm x 21.00mm. That measurement is the most important physical checkpoint for this switch, because even a correctly rated 12V switch will not suit a panel if the opening size or mounting arrangement differs.

Confirm that your circuit is designed for a 12V switch with a 20A rating. The current rating is a practical limit for the contacts, so it should be matched to the accessory or control circuit rather than assumed to cover every application. If the load or wiring is uncertain, compare the existing switch details, fuse protection, and wiring size before fitting.

This switch uses 3 blade terminals and a Single Pole - Single Throw, On - Off arrangement. That combination suits straightforward single-circuit switching, but it should still be checked against the original switch configuration. The part number ACX3784BL is the best identifier to confirm against an existing unit, especially where the vehicle model is not listed or the dashboard switch bank has been modified.

The red illumination is a visible feature, but it should also be checked against the intended function in the vehicle or equipment. Some users want a switch that is easy to locate at night, while others need the illuminated status to match the rest of the panel. The switch is supplied with a one year warranty, which is useful to note when comparing replacement options.

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 ACX3784BL 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 Length 3mm, Number of Positions 2, Switch Illumination Illuminated, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Additional published details for cross-checking include Part No. ACX3784BL, Brand OEX, Description OEX Rocker Switch On/Off SPST 12V Red Illuminated (Contacts Rated 20A @ 12V), Number of Terminals 3, Switch Action On - Off - SPST, Lamp Colour/s Red, Number of Poles 1, Switch Type Rocker, Weight .03kg, Product Group 1 AUTO ELEC ACCESSORIES.

OEX Rocker Switch On/Off SPST 12V Red Illuminated (Contacts Rated 20A @ 12V). Part number ACX3784BL 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 ACX3784BL, 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 fitment by matching the part number ACX3784BL, the 12V rating, the 20A contact rating, the 3 blade terminals, and the 37.50mm x 21.00mm mounting opening to the existing switch and panel requirements before purchase.

FAQ

What is the switch action on this OEX unit?

It is an On - Off SPST switch with one pole and two positions. For this listing, part number ACX3784BL 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 voltage is it designed for?

The switch is rated for 12V use. For this listing, part number ACX3784BL 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 current rating?

The contacts are rated at 20A at 12V. For this listing, part number ACX3784BL 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 blade terminals. For this listing, part number ACX3784BL 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 opening does it fit?

The stated mounting opening is 37.50mm x 21.00mm. For this listing, part number ACX3784BL 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?

Yes. It is listed as illuminated with red illumination. For this listing, part number ACX3784BL 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.