Heavy-Duty Dual Cable Terminal 48V – Double Stud Power Post

This reinforced double electrical terminal serves as a robust junction point for high-current cables. It features two threaded stud posts mounted on a common insulating platform, allowing multiple ring terminals to be secured on each post. The construction is heavily reinforced – the base is made of glass-fiber reinforced polyamide (nylon), giving it exceptional mechanical strength and resistance to shock and vibration. This ensures that the terminal remains intact and reliable even under harsh conditions (for example, pounding waves or constant engine vibration). The device is rated for systems up to 48V DC, covering standard boat onboard voltages (12V/24V) as well as many specialized applications (e.g., 36V/48V golf carts, electric drive systems, and off-grid solar setups).

The insulating base prevents the studs from contacting the mounting surface, allowing safe installation on metal bulkheads or panels without risk of shorting to ground. By combining two terminals in one compact module, the double terminal design is very convenient when you want two connection points in close proximity. For instance, you might use it to group all your positive cables at one location (red terminal) and all your negative cables at another (black terminal) mounted side by side for clarity and easy access. Note that the two studs are electrically isolated from each other; they can function as independent positive and negative buses, or simply two separate junctions for different circuit branches.

The studs come in two size options: M8 and M10, and each variant has a specific base color for identification – typically black for negative (ground) and red for positive. For example, M8x2 – black denotes a model with two M8 studs on a black insulated base (often used for a ground/negative bus), whereas M10x2 – red indicates two M10 studs on a red base (for a positive bus). This color-coding minimizes the chance of mixing up connections in complex systems. Each stud is made of stainless steel, and the nuts are brass with a chrome or nickel plating. This combination ensures high conductivity with no corrosion: the stainless steel provides strength, and the tinned/brass nuts ensure excellent electrical contact and won’t seize or rust like plain steel hardware might.

The terminal is labeled 48V to indicate its nominal voltage rating, making it ideal for linking batteries (12V/24V) and equally suitable for higher-voltage DC setups such as 36V or 48V battery banks in electric propulsion or solar installations. Dimensions: 43 x 45.3 x 34 mm – despite its capability, the unit is relatively compact, which helps in finding space to mount it even in crowded electrical compartments or engine bays. Each of the two studs can accept multiple ring-terminal lugs (stacked), meaning a single double terminal block can gather numerous connections in one place.

Available types and suggested uses:

• M8 x 2 (black base): This version with two M8 studs is commonly used as a central negative/grounding hub. For example, all the ground wires from various devices on a boat can be collected and secured on the two M8 posts, instead of piling them onto the battery’s negative pole. The rugged black base clearly signals a ground bus. Of course, the M8 double terminal can also be used for other purposes – such as linking two branches of positive circuits, whenever an M8 stud size is appropriate for the cable lugs involved. It is recommended for medium to high loads and scenarios where the slightly smaller stud (M8) suffices for the cable sizes in use.
• M10 x 2 (red base): This version with two larger M10 studs is intended for positive power distribution and main feeds that carry the lion’s share of current in the system. For instance, it can be mounted near the batteries as a primary positive distribution block: one M10 post can collect cables from multiple batteries or from a battery and alternator, and the other post can feed out to the main battery switch or primary fuse panel. The red base provides clear visual indication that this is an energized (positive) terminal. The M10 studs accommodate large lug holes (typically found on cables 50 mm² and above) and can handle very high currents – suitable for engine starter circuits, bow thrusters, anchor winches, inverters, and other heavy-duty equipment.

Installation of the double terminal is straightforward: use screws or bolts through the holes in the base to secure it to the desired surface (bulkhead, firewall, or panel). Ensure that underneath the base is clean and flat – even though it’s insulated, it’s good practice to mount on a dry, flat surface. Once the module is mounted, you can begin attaching ring terminal lugs onto each stud. It’s common practice to use double nuts on each stud: place all the ring terminals on the stud, tighten the first nut firmly to clamp them, then add a second nut on top and tighten it against the first (jam-nut style) for extra vibration resistance. After everything is tightened, verify that there is no unintended contact between the two posts (they are isolated, but you should avoid bridging them with any conductive tools or links unless intentionally doing so with a bus bar). When properly installed, this double terminal provides an organized and secure junction point that makes expanding or servicing your electrical system much easier. No more cramming too many cables onto a single battery post or terminal screw – you can consolidate them on this reinforced block where they are easy to reach and firmly held.