Description
OEX ACX3455 200A Marine Grade Battery Master Isolation Switch 12V and 24V SPST 55x55mm Square Mount
The OEX ACX3455 is a marine grade battery master isolation switch rated at 200A continuous at 12V or 24V, with a two-position On/Off SPST configuration and a 55x55mm square mounting footprint. Sitting between the ACX3409 (75A, 12V) and the ACX3412 (275A, 12V to 48V) in the OEX battery master switch range, the ACX3455 covers mid-range current requirements for passenger vehicle, 4WD, caravan and marine battery isolation on both 12V and 24V systems. The marine grade construction makes it particularly suited to boat and watercraft installations where corrosion resistance in damp, salt-laden environments is essential. Covered by a one year warranty.
Product overview
The ACX3455 fills the mid-range position in the OEX battery master switch line-up. The ACX3409 covers standard passenger vehicle use at 75A and 12V only with a compact 24mm round mount. The ACX3455 steps up to 200A at both 12V and 24V with a 55x55mm square mount and marine grade construction. The ACX3412 covers the most demanding applications at 275A across 12V to 48V with a self-cleaning contact mechanism and 10mm studs. For marine installations, dual battery builds and caravan main battery isolation where 12V and 24V compatibility is needed and a square panel mount suits the installation, the ACX3455 is the appropriate choice.
A battery master switch provides a single point of disconnect between the battery and the vehicle or vessel's electrical system used for safe servicing, extended storage to prevent battery drain and as a basic security measure. The 55x55mm square footprint suits standard marine switch panels and automotive fuse boxes for both surface mount and recessed panel installations.
Features and benefits
200A continuous at 12V or 24V: Rated for main battery isolation in passenger vehicles, 4WDs, caravans and marine vessels on both 12V and 24V systems. Steps up from the 75A ACX3409 and below the 275A ACX3412.
Marine grade construction: Built to withstand the corrosive, moisture-rich environments of marine installations.
Two-position On/Off (SPST): Straightforward single-pole single-throw operation for clean, simple battery disconnect.
55x55mm square mount: Standard square panel mount footprint common in marine switch panels and automotive fuse boxes.
12V and 24V compatible: Broader voltage compatibility than the ACX3409 (12V only).
One year warranty: Covered by a one year OEX warranty.
Technical specs
| Specification |
Detail |
| SKU |
ACX3455 |
| Brand |
OEX |
| Type |
Battery Master/Isolation Switch |
| Switch Action |
On/Off (SPST) |
| Poles |
1 |
| Positions |
2 |
| Current Rating |
200A at 12V or 24V |
| Mount Dimensions |
55mm x 55mm |
| Illumination |
Non-illuminated |
| Pack Quantity |
1 |
| Weight |
0.2kg |
| Warranty |
One year |
| Sold As |
Single unit |
Frequently asked questions
What is a battery master isolation switch used for? A battery master isolation switch provides a single point of disconnect between the battery and the vehicle or vessel's electrical system. It is used for safe servicing preventing accidental starts and short circuits during electrical work for extended storage to prevent battery drain, and as a basic security measure. The marine grade construction of the ACX3455 makes it particularly well suited to boat and watercraft installations.
How does the ACX3455 compare to the ACX3409 and ACX3412? The ACX3409 is rated at 75A at 12V only with a 24mm round mount. The ACX3455 is rated at 200A at 12V or 24V with a 55x55mm square mount and marine grade construction. The ACX3412 is rated at 275A across 12V to 48V with 10mm studs, self-cleaning contacts and a 52mm recessed mount option. Select the ACX3455 for mid-range marine or dual-voltage applications, the ACX3409 for compact 12V-only installations, and the ACX3412 for the highest current rating and widest voltage range.
What terminal size does this switch use? Terminal stud size is not confirmed in the current product data for the ACX3455. Contact us to confirm the correct ring terminal and cable lug size before purchasing cable accessories for this switch.
Is this switch suitable for saltwater marine use? The marine grade construction indicates the switch is built to withstand marine environments including salt exposure. Contact us to confirm specific salt fog or immersion ratings if this is a critical requirement for your installation.
Does this switch have a key or anti-theft mechanism? Key or anti-theft features are not confirmed in the current product data for the ACX3455. For a keyed battery isolation switch, the ACX3409 includes a removable key in the Off position.
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