Description
OEX ACX3220 600V 50A Modular Bus Block 6 Independent Terminal Rows Tinned Copper 16mm Pitch Connectable Design
The OEX ACX3220 is a 6-row modular bus block providing six electrically independent terminal rows, each rated to 600V and 50A. Unlike distribution blocks that share a common bus across all terminals, the ACX3220 provides individual circuit termination at each row suited to junction boxes, multi-circuit control panels, trailer wiring centres and switchboard builds where circuit separation is required rather than shared power distribution. The modular connectable design allows multiple units to be joined side by side for scalable multi-row configurations. Tinned copper terminals, steel/nickel-plated screws, heat-resistant plastic housing, 16mm pitch spacing, 124x45x30mm footprint. ISO 9001 certified manufacturing with in-house testing at OEX's Brisbane facility. Covered by a one year warranty.
Product overview
The ACX3220 is a terminal block, not a shared power distribution block. Each of the six rows is electrically isolated from the others, providing an independent termination point for a separate circuit. This makes it suited to junction boxes and multi-circuit panels where individual circuits need clean, labelled, accessible termination rather than a common distribution arrangement. The 16mm pitch between rows provides adequate spacing for clear cable identification, labelling and maintenance access, reducing errors during installation and simplifying fault-finding in complex multi-circuit systems.
The modular connectable design is the ACX3220's key advantage for scalable installations. Multiple units can be joined side by side to create a bus block of any row count required, allowing the electrical system to expand without replacing existing hardware. Tinned copper terminals provide good conductivity and long-term oxidation resistance in humid, marine and outdoor environments. Steel/nickel-plated screws provide vibration-resistant clamping force for mobile applications. The heat-resistant plastic housing withstands elevated operating temperatures from sustained current loads and high-temperature installation environments. The 600V rating provides a substantial safety margin above the 12V, 24V and 48V operating voltages common in automotive and caravan applications.
Features and benefits
6 independent terminal rows, each rated 600V and 50A: Six electrically isolated termination points for individual circuits. Not a shared power distribution bus.
Modular and connectable: Multiple ACX3220 units join side by side to create a bus block of any row count. Expand the installation without replacing existing wiring or hardware.
16mm pitch spacing: Clear cable routing, individual circuit labelling and easy maintenance access between rows.
Tinned copper terminals: Good conductivity and long-term corrosion and oxidation resistance in humid, marine and outdoor environments.
Steel/nickel-plated screws: Vibration-resistant clamping force that maintains secure connections in mobile applications.
Heat-resistant plastic housing: Withstands elevated temperatures from sustained current loads and high-temperature installation environments.
124x45x30mm footprint: Fits neatly into junction boxes, equipment cabinets and custom control panels.
ISO 9001 certified manufacturing: In-house product testing at OEX's Brisbane facility.
One year warranty: Covered by a one year OEX warranty.
Technical specs
| Specification |
Detail |
| SKU |
ACX3220 |
| Brand |
OEX |
| Type |
Modular Bus Block |
| Voltage Rating |
600V |
| Current Rating Per Row |
50A |
| Number of Rows |
6 |
| Terminal Pitch |
16mm |
| Terminal Material |
Tinned copper |
| Screw Material |
Steel, nickel plated |
| Housing Material |
Heat-resistant plastic |
| Design |
Modular, connectable |
| Dimensions |
124mm x 45mm x 30mm |
| Manufacturing Standard |
ISO 9001 certified |
| Testing Location |
In-house, Brisbane, Australia |
| Pack Quantity |
1 |
| Warranty |
One year |
| Sold As |
Single unit |
Frequently asked questions
Are the six terminal rows electrically independent or connected to a shared bus? Each of the six terminal rows is electrically independent. The ACX3220 is a terminal block for individual circuit termination, not a shared power distribution block. Each row provides an isolated termination point for a separate circuit, suited to junction boxes, multi-circuit panels and wiring centres where circuit separation is required.
Can multiple ACX3220 units be connected together? Yes. The modular connectable design allows multiple units to be joined side by side to create a bus block with any number of rows required, making it suited to scalable installations where the circuit count may grow without requiring replacement of existing hardware.
What wire gauges are compatible with the ACX3220 terminal screws? The ACX3220 accommodates wire gauges suited to circuits up to 50A per row typically 6mm² to 10mm² (approximately 10AWG to 8AWG) for near maximum-rated circuits, with smaller gauges suited to lower-current applications. Always match wire gauge to the actual current draw of each individual circuit.
Is the ACX3220 suitable for 12V and 24V automotive and marine applications? Yes. With a 600V rating, the ACX3220 is suitable for all standard automotive (12V), marine (12V/24V), caravan (12V) and commercial vehicle (24V) electrical systems. The 600V rating provides a substantial safety margin above the operating voltages common in these applications.
Can the ACX3220 be mounted in a standard junction box or on a DIN rail? The 124x45x30mm footprint suits standard automotive and industrial junction boxes and electrical enclosures. Check fitment with your specific enclosure or DIN rail hardware to confirm compatibility for your installation, as DIN rail mounting clip compatibility varies by product variant.
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