OEX ACX3157 250A Dual Stud Distribution Terminal - Red

OEX ACX3157 250A Dual Stud Distribution Terminal - Red

Expand your high-current connection options with the OEX ACX3157 250A Dual Stud Distribution Terminal — featuring two stainless steel studs rated to 250A total, glass-filled nylon base for superior strength and heat resistance, and red colour coding for positive rail identification in automotive, marine, 4WD, caravan, RV, mining, and industrial high-current power distribution installations.

Product Overview

The OEX ACX3157 builds on the single stud terminal concept by providing two stainless steel studs mounted on a single glass-filled nylon base — doubling the available connection points for applications where a single stud is insufficient for the number of cable lugs required, or where having two physically separated studs makes for a cleaner, more organised wiring layout. The dual stud configuration is particularly useful in professional automotive and marine electrical builds where incoming and outgoing circuits benefit from being separated across two studs rather than stacked high on a single post — reducing the risk of loose connections caused by excessive lug stacking, improving overall connection integrity, and maintaining a neater installation appearance. Common applications include splitting a main positive or earth feed across two studs for balanced circuit distribution, providing separate connection points for large and small gauge cables on the same terminal, creating a compact positive or earth junction for multiple circuits in tight spaces, and serving as an intermediate distribution point between a main busbar and secondary distribution locations. The 250A continuous rating covers the combined total current across both studs, making the ACX3157 suitable for demanding 12V and 24V high-current installations including large amplifier systems, inverter feeds, dual battery setups, 4WD accessory circuits, and commercial vehicle auxiliary electrical systems. Glass-filled nylon construction delivers the same superior heat and impact resistance as the ACX3145BL single stud terminal, while red colour coding provides immediate positive terminal identification. ISO 9001-certified manufacturing and in-house product testing at OEX's Brisbane facility ensures consistent quality and long-term reliability in the harshest operating conditions.

Features & Benefits

Dual Stud Configuration for Expanded Connection Capacity: Two stainless steel studs provide double the cable lug connection points compared to a single stud terminal — reducing excessive lug stacking on a single post, improving connection integrity at each stud, and allowing for a cleaner, more organised wiring layout in complex electrical installations.

250A Continuous Power Rating: Rated to 250A continuous total current across both studs, the ACX3157 handles the combined circuit loads of multiple cable lug connections — suitable for main positive or earth distribution, amplifier power and earth feeds, inverter connection points, dual battery tap-offs, and high-current 4WD and marine accessory circuits.

Stainless Steel Terminal Studs for Long-Term Reliability: Stainless steel stud construction provides robust corrosion resistance and long-term mechanical integrity under vibration, thermal cycling, and exposure to moisture, salt, and automotive fluids — maintaining secure electrical connections in demanding outdoor and marine environments.

Glass-Filled Nylon Base for Superior Strength and Heat Resistance: Glass-filled nylon provides significantly greater rigidity, impact resistance, and thermal stability compared to standard nylon, resisting deformation and cracking under sustained load and elevated temperatures in engine bay, amplifier enclosure, and industrial equipment environments.

Red Colour for Positive Rail Identification: The red base allows instant identification as a positive power terminal in any installation, reducing wiring errors when multiple terminals are mounted in proximity — especially valuable when paired with a matching black dual stud terminal for a clearly colour-coded positive and negative distribution pair.

ISO 9001 Certified Manufacturing: Produced under ISO 9001 quality management certification with in-house product testing at OEX's Brisbane facility, ensuring every unit meets stringent engineering and quality control procedures for reliability across automotive, marine, mining, RV, and industrial mobile applications.

Technical Specs

Compatible With / Goes Well With

The OEX ACX3157 suits 12V and 24V automotive, marine, caravan, RV, 4WD, mining, and commercial vehicle electrical systems requiring a 250A-rated dual stud connection point for power or earth distribution. Ideal for high-powered car audio amplifier positive and earth feeds, dual battery system positive tap points, inverter feed distribution, multi-circuit earth consolidation, and 4WD accessory positive distribution. Pairs directly with a matching black dual stud terminal for a colour-coded positive and negative terminal pair. Complements the OEX ACX3145BL single stud terminal, OEX distribution blocks, ANL fuse holders, busbars, and battery terminals for complete high-current power management solutions.

Frequently Asked Questions

How does the dual stud terminal differ from the OEX ACX3145BL single stud terminal?

The ACX3157 provides two stainless steel studs on a single base, compared to the single stud on the ACX3145BL. Both are rated to 250A and use the same glass-filled nylon base construction. The dual stud configuration is preferable when you need more cable lug connection points than a single stud can comfortably accommodate, or when separating incoming and outgoing circuits across two distinct studs makes for a cleaner, safer installation.

What is the total current rating across both studs?

The ACX3157 is rated to 250A continuous total across both studs combined. When planning your installation, ensure the combined current draw of all circuits connected across both studs does not exceed 250A continuous to maintain safe, reliable operation within the terminal's rated capacity.

Can the dual studs be used for different circuits or must they be connected together?

This depends on the internal construction of the terminal — if both studs share a common bus within the base, they form a single electrical node and all connections share the same potential. If electrically isolated, they can serve independent circuits. Refer to OEX product documentation or contact F.A.E. for confirmation of the internal configuration before use in applications requiring electrically isolated studs.

Is the ACX3157 suitable for marine and outdoor installations?

The stainless steel studs and glass-filled nylon base provide good corrosion and moisture resistance for marine, outdoor, and under-bonnet applications. For best long-term performance in marine environments, use tinned copper cable lugs and apply dielectric grease to stud and lug contact surfaces before assembly to prevent oxidation and galvanic corrosion at connection points.

How does the ACX3157 complement OEX distribution blocks in a system?

OEX distribution blocks such as the ACX3210 and ACX3212 are designed for splitting a single main feed into multiple outputs at the primary distribution level. The ACX3157 dual stud terminal works well as a secondary consolidation or tap-off point — for example, receiving a feed from a distribution block output and providing two local connection points for nearby devices or earth straps without routing cables back to the main block.