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Manufacturer Resources
Product Specs
- Application:
- Wiring terminations or connections for applications such as wiring harness, panelboard, telecommunications, and automotive.
- Country Of Origin:
- United States (US)
- Product Subgroup:
- General Terminals
- Product Type:
- Vinyl 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 RB877M – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RB877M ring terminal accept?
The RB877M is built for 18-14 AWG conductors. The blue insulation is the standard color code for that range, so on a panel where crimps are color-sorted it reads as the 16 AWG-class barrel at a glance. Smaller than 18 AWG or larger than 14 AWG needs a different terminal.
2) What stud or screw size does the RB877M ring fit?
The ring is sized for a No. 10 stud or screw. It will not seat on a 1/4-20 stud, and on a smaller No. 6 or No. 8 screw the tongue will float unless you add a washer.
3) Is this ring terminal rated for 600 volt control and panel wiring?
Yes. The Sta-Kon RB877M carries a 600 V rating and is UL recognized under file E9809, which is what an inspector looks for on panelboard and control wiring terminations.
4) Should I use a ring terminal or a spade terminal on a panelboard terminal screw?
A ring tongue like the RB877M has to be slipped over the stud, so it takes longer to install, but it cannot vibrate off a loosened screw the way a fork or spade can. On panelboard, wiring harness, telecom, and automotive terminations where vibration or safety matters, the ring is the right call; use a spade only where you need to drop the wire in without removing the screw.
5) What is the barrel made of, and does it work on aluminum wire?
The barrel is copper, so it is intended for copper conductors. Crimping copper-only terminals onto aluminum wire is not an approved termination; aluminum needs an AL9CU-rated connector instead.
6) What does the Mylar insulation on the RB877M do that plain vinyl does not?
It is a vinyl insulated ring terminal with a Mylar liner inside the sleeve. The liner reinforces the insulation at the crimp so the sleeve resists splitting and gives better dielectric integrity at the 600 V rating, which is why these get specified in harness and telecom work over bare vinyl.
7) Are Sta-Kon RB877M terminals made in the USA for government and institutional specs?
Country of origin is the United States, which is what procurement needs when a contract carries a domestic-sourcing clause. The part number to cite on the submittal is RB877M.
How fast can I get the Sta-Kon RB877M 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 RB877M come with a warranty?
Absolutely. The Sta-Kon RB877M 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 RB877M?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
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