Thomas & Betts 10RC-6 Ring Terminal

The 10RC-6 is built for a #6 stud. The ring tongue measures 0.27 inches across the hole dimension (C), so it drops over a #6 screw or terminal-block stud without reaming. If your lug landing is a #8 or #10 stud, this is the wrong terminal and you need a larger ring.

The vinyl sleeve on the 10RC-6 accepts insulation up to 0.21 inches in diameter. Measure over the jacket, not the copper. Thick-wall or heavily jacketed fixture wire above that figure will not seat into the sleeve, and forcing it leaves the barrel short on the conductor.

Yes. It carries a 600V rating with a 105 degrees C temperature rating, which covers typical panel, control-cabinet, and fixture-whip work. The insulation sleeve is UL 94 V-0 flammability rated, and the terminal is UL and CSA recognized.

They serve different wire sizes and build styles, so they are not interchangeable. The Thomas & Betts 10RC-6 is an insulated vinyl ring terminal with a copper barrel, electro tin-plated, rated 600V and 105 degrees C, and it takes a #6 stud. The Burndy YAV6CL1BOX is a Hylug one-hole ring terminal for 6 AWG conductor with a #8-10 stud hole. If the conductor is 6 AWG and the stud is #8 or #10, the Burndy is the correct part; for a #6 stud with the small insulated vinyl barrel, use the 10RC-6.

Step up to a heavier lug such as the Burndy YAV6CL1BOX Hylug, a one-hole ring terminal sized for 6 AWG conductor with a #8-10 stud hole. The Thomas & Betts 10RC-6 is built around a #6 stud with a maximum insulation diameter of 0.21 inch, so a 6 AWG conductor and a #10 stud are outside what it is made to take.

Thomas & Betts calls out the ERG4001 as the recommended tool. Also listed as approved for this terminal: WT145C, WT2000, WT112M, and ERG4003. The barrel is brazed-seam and serrated for pull-out strength, so it wants a proper insulated-terminal crimper rather than a general-purpose plier crimp.

They sell by the each, but ship in multiples of 50. Inner package is 50 pieces and the outer carton holds 250, so a full carton is five bags. Useful if you are stocking a truck or an MRO crib rather than buying a handful.

Two different classes of part. The 10RC-6 is a small insulated vinyl ring terminal for a #6 stud, crimped with a hand tool and sized for conductor insulation up to 0.21 inches. The Burndy YAV6CL1BOX Hylug is a one-hole 6 AWG ring terminal for a #8-10 stud, a heavier power lug for larger conductors. Use the RC terminal for control, signal, and fixture wiring; step up to the Hylug when you are landing 6 AWG feeder-class copper on a #8 or #10 stud.

Overall length (A) is 1.06 inches with the tongue dimension M at 0.9 inches, barrel width B at 0.31 inches, and 0.04 inch stock thickness. In a crowded wireway or a shallow junction box, that 1.06 inch run plus the wire bend radius is the figure to check before you commit to a ring rather than a fork terminal.

Plan on separate tooling. The 10RC-6 is applied with the ERG4001 as the recommended tool, and is also compatible with the WT145C, WT2000, WT112M and ERG4003. The Burndy YAV6CL1BOX is a Hylug sized for 6 AWG conductor, a heavier barrel than the small insulated 10RC-6, so verify the die set for that conductor size before crimping it with a tool chosen for the 10RC-6.

The 10RC-6 body is copper with an electro tin-plated finish, and it is RoHS compliant. Tin plating over copper is what you want on a terminal landing on a steel or plated stud in a damp or mixed-metal environment.

Yellow is the sleeve color on the 10RC-6, part of the T&B RC self-insulated series. On a panel, the color is how a technician tells one wire-range terminal from the next at a glance, so if your facility standardized on a particular sleeve color per gauge range, match the color as well as the stud size when restocking.