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Lefthnd viny ins fem 0.25 disc22-18
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Insulation Material:
- Vinyl
- Product Subgroup:
- Disconnects
- Product Type:
- Vinyl Insulated Female Disconnect
- Wire Size:
- 22-18 AWG
- Department:
- Electrical
- Product Group:
- Wire Termination
- Product Color:
- Red
- Product Material:
- Copper
Sta-Kon RA257ML – Frequently Asked Questions
1) What wire gauge does the Sta-Kon RA257ML female disconnect crimp onto?
The RA257ML takes 22-18 AWG stranded or solid copper wire. That is the small-gauge range used for control wiring, thermostat and low-voltage appliance leads, so it will not hold 16 AWG or heavier. The red vinyl insulation is the standard color code for the 22-18 range, which makes it easy to confirm the right barrel size at a glance in a panel full of mixed terminals.
2) Will the RA257ML fit a 1/4 inch male tab or spade terminal?
Yes. The RA257ML is a female disconnect sized for a 0.250 inch (1/4 inch) male tab, which is the common tab width on contactors, relays, switches and motor terminals. It slides onto the blade; it is not a ring or fork terminal and does not go under a screw.
3) What does the "left hand" in the Sta-Kon RA257ML mean, and does it matter which one I order?
It describes the angle of the barrel relative to the mating tab. The RA257ML is the left hand version, so the wire exits to one side rather than straight back. That matters when you are routing leads in a tight enclosure or stacking terminals on a crowded relay, because the wrong hand sends the conductor the wrong direction and forces a bend at the crimp. If your existing lead comes off the tab to the opposite side, you want the right hand version instead.
4) Is the Sta-Kon RA257ML disconnect copper or steel, and will it work on copper conductors?
The terminal barrel is copper, so it mates with copper conductors without the dissimilar-metal concerns you get pairing aluminum wire to a copper-only lug. Use it on copper wire in the 22-18 AWG range.
5) Do I need a special crimp tool for a vinyl insulated 22-18 AWG disconnect?
It needs an insulated-terminal crimper with a die matched to the 22-18 AWG (red) range. The vinyl sleeve is crimped along with the barrel, so a bare-terminal or uninsulated die will cut the insulation rather than compress it. Pliers are not a substitute; an undercrimped 22 AWG control lead pulls off the tab under vibration.
6) Should I use a female disconnect like the RA257ML or a ring terminal on my connection?
Pick by what the equipment gives you. The RA257ML is a push-on female disconnect for a 1/4 inch male blade, which is what you find on contactors, fan relays, pressure switches and most HVAC components, and its advantage is that you can pull the lead for service without touching a screw. If the device has a threaded stud or terminal screw instead of a blade, you want a ring or fork terminal in the same 22-18 AWG range, not this one.
7) Is the Sta-Kon RA257ML made in the USA?
Yes, country of origin on the RA257ML is the United States, which is what matters if you are buying against a domestic-preference or Buy American line item on an institutional or government order.
8) What is the manufacturer part number for the left hand 1/4 inch Sta-Kon female disconnect for 22-18 wire?
RA257ML is the Sta-Kon part number. One model covers the configuration: left hand, vinyl insulated, 0.250 inch female disconnect, 22-18 AWG, red.
How fast can I get the Sta-Kon RA257ML delivered?
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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 RA257ML come with a warranty?
Absolutely. The Sta-Kon RA257ML 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 RA257ML?
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