Panduit EV10-38RB-Q StrongHold Vinyl Insulated Ring Terminal

The Panduit EV10-38RB-Q is a vinyl insulated ring terminal from the Panduit StrongHold line — engineered for 12–10 AWG copper conductors terminating on 3/8" hardware. Tin-plated copper barrel, UL Listed and CSA Certified, sold in packs of 25 with a carton quantity of 250. If you're wiring up control panels, junction boxes, or grounding runs where a reliable, standards-compliant ring lug matters, the EV10-38RB-Q is the workhouse pick for that wire gauge and stud size combination.

Key Features

• 12–10 AWG Conductor Range: Handles the most common control-wiring gauges in commercial and industrial installations. A single SKU covers both 12 AWG branch circuits and 10 AWG feeder runs, reducing the number of terminal part numbers you stock on the truck or in the panel shop.
• 3/8" Stud Size: Sized for the 3/8" hardware that's standard on bus bars, ground lugs, and equipment terminals in commercial electrical panels and security enclosures. Verify your stud diameter before ordering — a mismatch here costs time at the panel.
• Tin-Plated Copper Barrel: Tin plating resists oxidation at the crimp interface, which matters in humid or coastal environments where bare copper connections degrade and increase resistance over time. The result is a more stable connection that stays within spec across temperature cycles.
• Vinyl Insulation — UL 587 H Flammability Rating: The vinyl sleeve meets UL 587 H flammability requirements, meaning it's rated for the thermal environments typical of enclosed wiring troughs and control cabinets. This isn't decorative — it's a fire-resistance credential that shows up on inspection checklists.
• UL Listed (E52164) + CSA Certified (LR31212): Dual-listed under both UL 587H and CSA LR31212, so these terminals pass AHJ review in both US and Canadian jurisdictions without substitution paperwork. For projects that cross the border or require dual-code compliance, that listing pair saves a conversation with the inspector.
• Overall Dimensions — 1.31" L × 0.58" W (14.7mm): Compact enough to fit cleanly in tight terminal strips and wireway runs. The 14.7mm width keeps adjacent terminals from crowding each other in high-density wiring applications.
• Pack of 25, Carton of 250: The 25-piece pack (EV10-38RB-Q) is sized for job-lot purchasing — enough for a typical panel run without over-buying. When volume warrants, the 250-piece carton reduces per-unit cost and keeps the supply room stocked for production crimping. See compatible wire termination accessories for complementary ferrules and fork terminals in the same AWG range.
• StrongHold™ Contractor Grade: The StrongHold sub-brand designation reflects a construction-grade specification — heavier barrel walls and tighter dimensional tolerances than commodity import terminals. For integrators running accountability on installation quality, brand-traceable terminals are easier to document in as-built records.

Integration & Compatibility

The EV10-38RB-Q is designed for use with Panduit's crimp tool lineup. Compatible tools include the CT-100A, CT-200, CT-600-A (CT-570CH), CT-1570, CT-1701, CT-2500 (CT-2570CH), CT-160, and CT-255. Using a calibrated, matched Panduit crimp tool ensures the barrel deforms to the correct cross-section — a hand crimp with an off-brand ratchet tool introduces variability that voids UL Listed status on the termination. If you're running a production environment or a supervised installation that requires listed terminations, this tool compatibility list is the checklist you're working from.

These terminals are rated for copper conductors in the 12–10 AWG range. They are not rated for aluminum conductors — aluminum-to-copper termination requires AL-rated or bi-metallic lugs. Verify conductor material before specifying on aluminum-conductor branch circuits.

For panel builders, the EV10-38RB-Q pairs naturally with Panduit's wiring duct, cable ties, and insulation displacement connectors. If you're speccing a full enclosure build, reviewing the wire management category alongside terminals avoids having to source accessories from a second vendor.

Frequently Asked Questions

Q: What wire gauge does the EV10-38RB-Q accept?

A: The EV10-38RB-Q is rated for 12–10 AWG copper conductors. It is not rated for aluminum conductors.

Q: What stud size does this ring terminal fit?

A: The EV10-38RB-Q is designed for a 3/8" stud size, which is standard on most bus bars and equipment ground lugs in commercial electrical panels.

Q: Which crimp tools are compatible with the EV10-38RB-Q?

A: Panduit lists the following compatible tools: CT-100A, CT-200, CT-600-A (CT-570CH), CT-1570, CT-1701, CT-2500 (CT-2570CH), CT-160, and CT-255. Using a matched Panduit tool is required to maintain the UL Listed termination rating.

Q: What are the flammability and listing credentials on the EV10-38RB-Q?

A: The vinyl insulation meets UL 587 H flammability rating. The terminal is UL Listed under file E52164 and CSA Certified under LR31212, covering both US and Canadian code jurisdictions.

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

A: Each package contains 25 terminals (EV10-38RB-Q). The full carton quantity is 250 pieces.

Q: Is the barrel tin-plated, and why does that matter?

A: Yes — the copper barrel is tin-plated. Tin plating resists oxidation at the crimp joint, which maintains stable contact resistance over time, particularly in humid or temperature-cycling environments.

James Everett

The EV10-38RB-Q is a detail that gets overlooked until it fails inspection — or worse, causes a connection failure in a commissioned panel. What I look at first on a ring terminal is the listing credentials: this one carries UL E52164 and CSA LR31212, which means it clears AHJ review in both US and Canadian jurisdictions without substitution paperwork. That dual listing is not universal at this price point, and it's the reason I specify StrongHold terminals on projects where an inspector is going to be walking the panel.

Technical Highlights:

• Tin-Plated Barrel: Oxidation resistance at the crimp interface is what separates a connection that holds spec across five years of thermal cycling from one that starts showing elevated resistance in year two. The tin plating on the EV10-38RB-Q barrel addresses this directly — relevant in any installation where the enclosure sees humidity or temperature swings.
• UL 587 H Flammability Rating: The vinyl insulation sleeve isn't just color-coding — it meets UL 587 H, which is the thermal benchmark for terminals used inside enclosed wiring troughs and control cabinets. Skipping this spec on commodity terminals is how you introduce a code deficiency that doesn't show up until re-inspection.
• 8-Tool Compatibility List: Panduit publishes a specific compatible tool list (CT-100A through CT-255, eight models) for a reason — the crimp die geometry is matched to the barrel OD. An off-spec crimp tool produces a connection that looks fine visually but doesn't meet the pull-force requirement for a listed termination. If your crew is running a tool not on that list, the UL listing on the terminal doesn't transfer to the installation.

Deployment Considerations:

• The 3/8" stud size is the correct match for most commercial panel bus bar hardware and equipment ground terminals, but confirm stud diameter on the receiving hardware before pulling a large quantity — a 5/16" or 1/2" stud requires a different SKU, and swapping terminals mid-panel installation is a time cost that's easy to avoid with one measurement upfront.
• These are copper-conductor rated only. If your project includes aluminum-conductor branch circuits (common in some commercial feeder configurations), you need AL-rated or bi-metallic lugs — the EV10-38RB-Q is not the right terminal for that application.

For commercial panel shops and security integrators wiring control enclosures, grounding bars, or power distribution in access control and surveillance equipment rooms, the EV10-38RB-Q is a listed, traceable terminal that holds up under inspection and production-volume crimping alike — provided the crew is running a compatible Panduit tool.