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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Ring Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 18-14 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Blue
- Product Material:
- Copper
Sta-Kon RB1333 – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RB1333 ring terminal accept?
The RB1333 is built for 18 to 14 AWG conductors. That is the blue insulation color range on standard terminal color coding, so if you are pulling 16 AWG control wire or 14 AWG branch wire, this is the right barrel. For 22-16 AWG you need a red terminal, and for 12-10 AWG a yellow one.
2) What stud or screw size does the Sta-Kon RB1333 ring fit?
The ring is sized for a No. 6 stud or screw. It will drop over a #6 terminal block screw or ground screw; it will not pass over a #8 or 1/4-20 stud, so step up to a larger ring for those.
3) Is this ring terminal rated for 600 volt circuits?
Yes. The RB1333 nylon insulated ring terminal carries a 600 V rating, which covers typical commercial lighting, control, and branch circuit work.
4) Is the Sta-Kon RB1333 UL listed?
It is covered under UL file E9809. For inspected work where terminations have to be listed, that is the reference to cite.
5) Why choose a ring terminal instead of a fork or spade terminal?
A ring has a closed barrel end, so it cannot vibrate off a loosened screw the way an open fork can. That makes the RB1333 the choice for motor connections, panel grounds, and anything subject to vibration. A fork terminal is faster to service because you can slide it out without fully removing the screw, which is why panel builders use forks on terminal strips they expect to rework.
6) Is the barrel on this terminal copper or aluminum?
Copper barrel with a nylon insulating sleeve. Copper means it is intended for copper conductors only, not aluminum building wire, which requires an AL/CU rated connector.
7) What is the difference between nylon insulated and vinyl insulated ring terminals?
The RB1333 uses nylon, which holds up better to heat and to abrasion during pull-through than vinyl. For panels and enclosures that run warm, or where the lead gets dragged through a raceway, nylon is the more durable sleeve. Vinyl is the lower-cost option for light-duty, cooler applications.
8) Is the Sta-Kon RB1333 made in the USA?
Yes, country of origin is the United States. That matters on government, institutional, and some utility jobs carrying domestic sourcing requirements.
9) What part number do I order for a blue No. 6 ring terminal from Sta-Kon?
Order Sta-Kon RB1333. It is the blue, nylon insulated, 18-14 AWG ring with a No. 6 stud hole.
How fast can I get the Sta-Kon RB1333 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sta-Kon RB1333 come with a warranty?
Absolutely. The Sta-Kon RB1333 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sta-Kon RB1333?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Sta-Kon RB1333 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.