Thomas & Betts RC10-38 Ring Terminal

The RC10-38 is the yellow-coded size in the T&B RC series, which covers 12-10 AWG stranded copper. The yellow nylon sleeve is the standard color code for that range, and the barrel accepts conductor insulation up to 0.21 inch outside diameter, so typical THHN or MTW building wire in 12 and 10 AWG seats without stripping back the jacket further than normal.

ERG4001 is the recommended tool. T&B also qualifies the WT2000, WT112M, WT145C, WT145A and ERG4003 for this terminal. Using a qualified insulated-terminal die matters here because the inner bronze insulation grip sleeve has to be compressed along with the barrel; a generic open-barrel or uninsulated die will not form both.

Yes, the RC10-38 carries a 600V rating with a 105 degree C temperature rating, and it is UL and CSA recognized. The nylon sleeve is UL 94 V-2 for flammability. That combination covers typical 600V motor control panels, starter terminals and panelboard grounding pads.

No. The RC10-38 barrel is sized for 12-10 AWG, so 6 AWG will not enter it and a forced crimp is not a listed termination. Step up to a heavier lug: the Burndy YAV6CL1BOX Hylug is a 6 AWG one-hole ring terminal, though it is drilled for #8-10 studs rather than 3/8, so confirm the stud on your pad before ordering.

They serve different conductor sizes and install differently. The RC10-38 is an insulated nylon ring terminal in the RC series, copper with an electro tin-plated finish, rated 600V and 105 degrees C, with a yellow insulation sleeve and a maximum insulation diameter of 0.21 inch. The Burndy YAV6CL1BOX is a Hylug series ring terminal for 6 AWG conductor with a single hole for a #8-10 stud. If you are terminating smaller stranded control or fixture wire with a crimp tool such as the ERG4001, the RC10-38 is the insulated option; for a 6 AWG feeder tap to a stud, the Hylug is the heavier lug.

No. The RC10-38 is built for a much smaller conductor and accepts insulation up to 0.21 inch in diameter, so 6 AWG will not seat in the barrel. For 6 AWG landing on that size stud, use the Burndy YAV6CL1BOX Hylug, which is a one-hole ring terminal sized for 6 AWG conductor with a #8-10 stud hole.

The barrel and tongue are copper with an electro tin-plated finish, which is the normal plating for indoor industrial and panel work and resists the surface oxidation that drives up contact resistance. Stock thickness is 0.04 inch. It is also RoHS compliant, which matters if you are supplying a job with restricted-substance requirements.

With the RC10-38 the insulation is already part of the terminal: a nylon sleeve over an inner bronze insulation grip that extends the flexing radius of the conductor and stops conductor creep at the barrel mouth. That means one crimp per termination instead of crimp plus shrink, and no gap at the strain point. An uninsulated lug such as the Burndy YAV6CL1BOX Hylug is the better choice when you are on heavier conductor (that one is a 6 AWG, one-hole ring for #8-10 studs) or where you want to apply your own sleeving.

The RC10-38 is self-insulated with a high dielectric-strength nylon sleeve in yellow, with a UL 94 V-2 flammability rating and an inner bronze insulation grip sleeve that lengthens the flexing radius of the conductor. The Burndy YAV6CL1BOX Hylug is a bare one-hole lug for 6 AWG on a #8-10 stud, so if your application calls for a factory-insulated sleeve rather than field-applied heat shrink or tape, the RC10-38 is the one that carries it.

Plan on separate tooling. The RC10-38 is crimped with insulated-terminal tools - WT2000, WT112M, WT145C, ERG4001, ERG4003 or WT145A, with the ERG4001 recommended. The Burndy YAV6CL1BOX is a 6 AWG Hylug compression lug, a different class of connector that takes heavy-duty compression tooling rather than a hand crimper for insulated terminals.

They are sold each but ordered in multiples of 50, which is the inner pack. The outer carton holds 250. Bulk users can reference the alternate package quantity RC733. Shipping weight works out to 7.5 lbs per 1000 pieces.