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INS NYL RING TERM, 3/0, 1/4, YELLOW
Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Subgroup:
- General Terminals
- Product Type:
- Nylon Insulated Ring Terminal
- Standards:
- UL E9809
- Voltage Rating:
- 600 V
- Wire Size:
- 3/0 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Yellow
- Product Material:
- Copper
Sta-Kon RK717 – Frequently Asked Questions
1) What wire size does the Sta-Kon RK717 ring terminal take?
The RK717 is sized for 3/0 AWG conductor. It's a one-size barrel, so it won't grip smaller cable like 1/0 or 2/0 reliably, and 4/0 won't enter the barrel. Match the terminal to the actual conductor you're landing, not the breaker size.
2) Will the RK717 terminal fit a 1/4 inch stud or bolt?
Yes. The RK717 has a 1/4 inch ring tongue, so it lands on a 1/4-20 stud or bolt on a bus bar, lug pad, or ground bar. It will also slip over a smaller #10 screw, though you'd normally use a washer to keep it centered.
3) Is this terminal copper or aluminum, and can I put it on aluminum cable?
The barrel is copper, so the RK717 is for copper conductors. Crimping copper-only hardware onto aluminum cable risks galvanic corrosion and a high-resistance joint; for aluminum you need an AL9CU rated lug instead.
4) Can I use this ring terminal on a 480V panel feeder?
The RK717 is rated 600 V, so it covers 480Y/277 and 600 V class circuits as well as ordinary 120/240 work. Insulation on the terminal is not a substitute for conductor insulation rating, but the terminal itself is not the limit at 480 V.
5) Do I need a special crimper for a 3/0 ring terminal?
Yes. At 3/0 AWG this is well past what a hand-squeeze crimper will close. You need a hydraulic or large mechanical crimper with the die set that matches a 3/0 copper barrel. Under-crimping a conductor this size is the usual cause of a hot connection.
6) Should I use a ring terminal or a fork terminal for a 3/0 feeder connection?
Use the ring, which is what the RK717 is. A ring tongue is captive on the stud, so it cannot back off sideways if the nut loosens. Fork or spade tongues are for quick-service points where you want to pull the wire without removing the nut, and they aren't appropriate for a large power conductor under vibration.
7) Is the yellow insulation on this Sta-Kon terminal just color coding or does it mean something?
It's standard color coding for the gauge range. Yellow on the RK717 identifies it as the large-conductor nylon insulated terminal for 3/0 AWG, so a crew can spot the right terminal in a bin without reading the stamp. The insulation itself is nylon, which holds up better to flexing and abrasion than vinyl.
8) Where is the Sta-Kon RK717 made?
Country of origin is Mexico. Useful if you're filling out origin documentation on a government or institutional order.
How fast can I get the Sta-Kon RK717 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 RK717 come with a warranty?
Absolutely. The Sta-Kon RK717 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 RK717?
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 RK717 from ZenSupply?
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