Streamline Cable Routing with the RA-3 Right Angle Feed-Thru Fitting
When space is tight and cables need to make sharp turns through walls or panels, the Newmar RA-3 stands out as a reliable solution. Designed for cables measuring 0.39 to 0.47 inches in diameter, this fitting enables clean, 90-degree routing while hugging surfaces to minimize protrusions. That means less interference with foot traffic, equipment, or adjacent wiring in demanding setups like marine vessels, industrial enclosures, RVs, or outdoor control boxes.
Unlike bulky alternatives that snag or expose cables, the RA-3’s sculpted nylon body delivers a smooth, rounded bend that safeguards against kinks or abrasions. Its low-profile footprint keeps installations sleek and professional, blending seamlessly into vertical or horizontal surfaces.
Robust Features for Harsh Environments
Waterproof IP65 Rating: Achieved via silicone compression rings, a sealed gasket base, and a locking end cap—perfect for moisture-prone areas without drilling oversized holes.
Gentle on Cables: Radiused 90-degree pathway prevents damage, extending cable life in vibration-heavy applications.
Low-Profile Design: Dimensions of 3.23 x 2.44 x 0.95 inches keep cables flush, reducing trip hazards and simplifying maintenance.
Durable Nylon Construction: Lightweight, corrosion-resistant, and impact-tough for long-term reliability in saltwater, dust, or chemical exposure.
Versatile Series Compatibility: Part of the RA lineup, tailored for various cable sizes to match your project’s needs.
Step-by-Step Installation for Quick Setup
Setting up the RA-3 takes minutes and requires no special tools—ideal for field installs or retrofits.
Slide the provided silicone compression rings onto the cable (ensure no connectors are attached at this stage).
Position the base plate over the mounting hole with the integrated waterproof gasket for a snug fit.
Route the cable through the fitting at a right angle, then secure the end cap by twisting it onto the base.
Tighten evenly to compress the rings, forming a watertight seal up to IP65 standards.
Test for leaks and trim excess if needed—your cable is now protected and routed.
Pro tip: Pre-measure your cable diameter precisely to confirm RA-3 compatibility, avoiding common sizing mismatches.
RA Series Comparison: Pick the Right Fit
The RA Series offers options for different cable thicknesses. Here’s how the RA-3 stacks up:
Model
Cable Diameter Range (inches)
Dimensions (inches)
RA-1
0.10 – 0.25
2.17 x 1.65 x 0.63
RA-2
0.27 – 0.35
3.23 x 2.44 x 0.95
RA-3
0.39 – 0.47
3.23 x 2.44 x 0.95
Compact RA-1 suits thinner wires, while RA-2 and RA-3 handle mid-to-thicker bundles with the same sleek profile.
Perfect for Real-World Applications
Engineers and installers rely on the RA-3 for scenarios where straight-through glands fall short:
Marine and Boating: Route power or data cables through bulkheads without compromising watertight integrity.
Industrial Panels: Organize wiring in cabinets or machinery housings, dodging interference.
RVs and Overland Vehicles: Secure feeds for lights, sensors, or solar setups in compact spaces.
Outdoor Enclosures: Protect against rain, dust, and impacts in security systems or telecom gear.
Its nylon build resists UV and chemicals better than metal options, making it a go-to for mobile or exposed installs.
Frequently Asked Questions
What cable sizes does the RA-3 accommodate?
The RA-3 is optimized for cable diameters from 0.39 to 0.47 inches, striking a balance for medium-gauge wires common in power and control applications.
