Panduit EV18-8RB-Q Insulated Vinyl Ring Terminal, 22–18 AWG, #8 Screw, 25-Pack

Overview

The Panduit EV18-8RB-Q is a StrongHold™ series insulated vinyl ring terminal rated for 22–18 AWG wire with a #8 (M4) screw hole. Designed for general-purpose wire termination across a wide range of commercial and light industrial applications, it delivers a secure, vibration-resistant mechanical connection without the cost premium of specialty-grade terminations. Red vinyl insulation identifies the 22–18 AWG range at a glance on the bench or in the panel, reducing mis-termination risk when working across mixed-gauge wire runs. Each package contains 25 terminals; carton quantity is 250 for higher-volume jobs.

These terminals ship from Panduit's Panduit wire management and termination line and are well-suited to control panel wiring, security system field terminations, and structured cabling endpoint work where a consistent, listed ring lug is required. If you're specifying wire termination hardware for a project BOM, the EV18-8RB-Q slots into the 22–18 AWG range with full UL and CSA listing to satisfy panel-shop and inspection requirements.

Key Features

• 22–18 AWG Wire Range: Covers the two most common light-control wire gauges in one SKU — you won't need to stock separate terminals for 22 AWG sensor leads and 18 AWG power runs in the same enclosure. Reduces SKU count on the job without sacrificing fit.
• Screw Size #8 (M4) Compatibility: Matches the standard #8 binding post found on terminal blocks, ground buses, and panel studs throughout commercial electrical work. No adapter hardware, no oversized hole that lets the lug walk under torque.
• Vinyl Insulation — UL 587-H Flammability Rating: The UL 587-H rating means the insulation meets the heat and flame requirements for listed terminal connectors — relevant when the installation will be inspected or when the panel sits in an ambient-temperature environment above typical room conditions.
• Red Color Coding: Industry-standard red identifies the 22–18 AWG range. In a multi-gauge panel, color coding cuts termination errors and speeds up future service calls when someone else is tracing the wiring.
• Zinc-Plated (Verzinkt) Copper Barrel: The tin/zinc finish resists oxidation at the crimp interface — a real factor in environments with humidity cycling (outdoor enclosures, mechanical rooms) where bare copper would develop resistance-increasing oxide over time.
• Overall Length 0.91 in / Width 0.31 in (7.9 mm): Compact footprint — 7.9 mm ring width clears standard #8 hardware with minimal interference, and the 0.91 in overall length keeps things tidy inside tight terminal strips or DIN-mounted blocks.
• UL Listed (587H E52164) and CSA Certified (LR31212): Dual listing satisfies both US and Canadian inspection requirements on the same hardware. Useful on cross-border projects or any job where the AHJ pulls the panel cover and checks markings.
• Compatible Crimping Tools: Rated for use with CT-100A, CT-600-A (CT-550CH), CT-1551, CT-1550, CT-2500 (CT-2550CH), CT-160, CT-260, and CT-412 — a range of manual and ratchet-style Panduit crimpers. Using a listed tool/terminal combination is what the UL listing actually certifies; using a random crimp tool voids that.

Integration & Compatibility

The EV18-8RB-Q (often searched as EV18 8RB Q) is a passive mechanical component — no firmware, no protocol requirements. It integrates into any wire-termination workflow that uses 22–18 AWG conductors terminated to a #8 or M4 screw. Common applications include security panel field wiring, access control reader cable terminations, low-voltage sensor runs, and general control enclosure work. For PoE switch installations where flying-lead power taps feed into terminal blocks, or any structured cabling endpoint requiring a listed ring lug, this terminal covers the spec. Panduit's listed competitor cross-reference lists TV188RXV as a comparable part — the EV18-8RB-Q is the direct Panduit equivalent if you're substituting from another manufacturer's BOM.

What's in the Box

• 25x Panduit EV18-8RB-Q insulated vinyl ring terminals (red, 22–18 AWG, #8 screw)

Frequently Asked Questions

Q: What wire gauge range does the EV18-8RB-Q accept?

A: The EV18-8RB-Q is rated for 22–18 AWG conductors. Do not use it on wire outside this range — an undersized conductor won't fill the barrel properly and an oversized one won't seat, either compromising crimp integrity.

Q: What screw size does the ring terminal fit?

A: It is designed for a #8 screw (M4 metric equivalent), which is the standard size found on most terminal blocks, ground buses, and panel binding posts used in commercial electrical and low-voltage work.

Q: Is the EV18-8RB-Q UL and CSA listed?

A: Yes. It carries UL listing 587H under file E52164 and CSA certification under LR31212. Both listings are marked on the product and satisfy US and Canadian inspection requirements.

Q: Which crimping tools are compatible with the EV18-8RB-Q?

A: Panduit lists the following compatible crimpers: CT-100A, CT-600-A (CT-550CH), CT-1550, CT-1551, CT-2500 (CT-2550CH), CT-160, CT-260, and CT-412. The UL listing is based on use with a listed tool — using an unlisted crimp tool is not covered by the certification.

Q: How many terminals come in a package, and what is the carton quantity?

A: Each retail package contains 25 terminals (EV18-8RB-Q). The full carton ships 250 terminals (10 packages). Order by package for smaller jobs or by carton for panel-shop volume.

Q: What does the red color coding indicate?

A: Red is the industry-standard color code for the 22–18 AWG wire range on insulated terminals. It allows quick visual identification during installation and future service, reducing the chance of picking up the wrong terminal size from a multi-SKU bin.

Jerry Tildsen

The EV18-8RB-Q is one of those BOM line items that looks trivial until you get a callback because a ring lug worked loose on a vibrating HVAC panel or a field tech grabbed the wrong gauge terminal out of a bin. The dual UL/CSA listing (587H E52164 / LR31212) and the red 22–18 AWG color coding are the two specs I actually care about when specifying these — listed hardware on listed tools is what keeps the AHJ happy, and color coding is what keeps the install crew from making a 1 AM service call.

Technical Highlights:

• Vibration-Resistant Design: Panduit specifically calls out suitability for vibration-prone applications in the product description — relevant for mechanical room panels, HVAC controls, and any enclosure mounted to a surface with motor or compressor vibration. A loose ring lug in those environments is a fault waiting to happen.
• Zinc-Plated Barrel: The zinc finish slows oxidation at the crimp interface compared to bare copper. In an outdoor enclosure or a humid mechanical room, that translates to stable contact resistance over years of service rather than a gradually degrading connection.
• Package Quantity 25 / Carton 250: The 25-pack is sized for a single-job pull; the 250-carton works for panel shops running recurring production. Neither size forces you to over-order for a small access control or camera field termination job.

Deployment Considerations:

• The UL listing is tool-specific — only the eight listed Panduit crimpers (CT-100A, CT-600-A, CT-1550, CT-1551, CT-2500, CT-160, CT-260, CT-412) are covered. If your field crew carries a different brand's crimp tool, the listing technically doesn't apply. Worth noting on any job with a thorough inspector.
• The 0.31 in (7.9 mm) ring width is sized for a #8 fastener — do not drop it onto a #10 stud hoping it will fit. The ring will spin and won't seat flush under the screw head, which defeats the mechanical connection.

The EV18-8RB-Q is a solid specification for commercial security panel shops and field installation teams doing access control, intrusion, or low-voltage sensor wiring where dual US/Canadian listing, consistent color coding, and a named compatible tool set are required by the project spec or inspection authority.