Panduit DNF14-250FIM-L Male Disconnect Terminal 16-14AWG, Pack of 50
The Panduit DNF14-250FIM-L is a fully insulated, tool-free male disconnect terminal from the Pan-Term™ series, rated for 16–14AWG wire and designed around a 6.35×0.813mm male tab. Whether you're terminating control wiring in a panel, building automation cabinet, or access control enclosure, this connector gives you a repeatable, pull-resistant crimp connection with no exposed metal to risk a short circuit. Each pack contains 50 terminals (carton quantity: 250).
Key Features
- Tool-Free Mating and Unmating: The disconnect design allows the female coupler to slide onto and off the male tab without any tools — meaning field changes, rewires, or troubleshooting don't require additional hand tools at the terminal. That matters when you're working inside a tight enclosure with a harness already dressed.
- Full Nylon Insulation — Short-Circuit Protection at 600V: The polyamide (nylon) housing provides complete coverage over the wire barrel and tab entry, leaving no exposed conductor. Rated and UL-listed to 600V per UL 310, this is the right spec for control-voltage wiring where adjacent bare conductors would create a fault risk.
- Internal Barrel Serrations for Pull-Out Resistance: Ridges inside the wire barrel bite into the conductor strands during crimping, locking the wire mechanically rather than relying only on compression. If your application sees vibration — motor control panels, HVAC equipment enclosures, mobile installations — this is the spec that prevents intermittent connections over time.
- Internal Wire Stop for Consistent Insertion Depth: A physical stop inside the barrel limits how far the stripped wire can advance, ensuring every crimp lands the conductor in the correct position relative to the die. Inconsistent insertion is one of the most common causes of weak crimps; the wire stop removes that variable entirely.
- UL94V-2/HB Flammability Rating at 105°C: The nylon insulation meets UL 94V-2/HB flammability requirements and is rated to 105°C (221°F) continuous. For terminations near heat sources — motor drives, transformer secondaries, or densely packed control panels — that thermal headroom reduces the risk of insulation softening or derating under load.
- Nickel-Plated Contact Finish: The nickel plating on the male tab resists oxidation and provides stable contact resistance over the connector's service life. In environments with humidity, cleaning agents, or mild chemical exposure (common in manufacturing and building automation), bare copper tabs corrode and cause intermittent connections; nickel significantly extends that service interval.
- UL 310 and CSA 22.2 No. 153 Listed: Both UL and CSA listings are on the terminal itself, not just the tooling. That's important when your panel needs to pass a third-party inspection — the listing covers the terminal as a completed assembly, not just the material.
- Compatible with Panduit Crimping Tools: Verified for use with CT-1525, CT-2300/ST (CD-525), CT-2500/L (CT-2525CH), and UP14ZLW (CD-525) — all tools in the Panduit Pan-Term crimping lineup. Using the matched tool ensures the die geometry applies the correct compression profile for this terminal's barrel dimensions.
Integration and Compatibility
The DNF14-250FIM-L accepts 16–14AWG conductors and mates to a 6.35×0.813mm male tab (standard .250" tab, the most common size in low-voltage control wiring). Couplers, additional male terminals, and female counterparts are sold separately — Panduit's Pan-Term system is a modular family, so you can build daisy-chain or multi-tap configurations without switching to a different product line.
This terminal is also cross-referenced against a wide range of competitive part numbers from other manufacturers (including AMP/TE, Molex, Ideal, 3M, and NSI), making it a direct drop-in substitute in panel designs that were originally specified with those parts. The DNF14-250FIM-L (often searched as DNF14 250FIM L) uses the same .250" tab interface, so male-to-female interoperability is maintained when mixing brands on legacy installations.
For panel builders sourcing wire termination hardware, the 50-piece pack quantity aligns with typical job-lot purchasing for mid-size panels without leaving large excess stock. The 250-piece carton quantity is the natural bulk option for volume panel shops or warehouse stocking.
Frequently Asked Questions
Q: What wire gauge range does the DNF14-250FIM-L accept?
A: The DNF14-250FIM-L is rated for 16–14AWG conductors. Do not use it outside this range — undersized wire will not fill the barrel properly and will produce a weak crimp; oversized wire will not seat fully and may crack the insulation during crimping.
Q: What is the voltage rating of the DNF14-250FIM-L?
A: The terminal is UL-listed to 600V per UL 310 and CSA-listed per CSA 22.2 No. 153, making it suitable for standard control-voltage wiring in North American panels.
Q: Does the DNF14-250FIM-L require a special crimping tool?
A: Yes. Panduit specifies the CT-1525, CT-2300/ST (with CD-525 die), CT-2500/L (CT-2525CH die), and UP14ZLW (with CD-525 die) for this terminal. Using the matched Panduit tool ensures the correct die geometry and compression depth for a UL-compliant crimp. A generic ratchet tool may produce an out-of-spec crimp that fails pull testing.
Q: What is the tab size that the DNF14-250FIM-L mates with?
A: The male tab dimension is 6.35×0.813mm — this is the standard .250" quick-disconnect tab size used throughout low-voltage control, HVAC, and automotive-style wiring harnesses.
Q: How many terminals are in one order?
A: One order ships 50 terminals (one pack). The full carton quantity is 250 pieces. If your job requires the carton quantity, confirm availability at time of order.
Q: What is the maximum operating temperature for the insulation?
A: The nylon (polyamide) insulation is rated to 105°C (221°F) continuous and meets UL 94V-2/HB flammability classification — appropriate for panel locations near heat-generating components such as drives or transformer secondaries.
The DNF14-250FIM-L is one of those terminals that panel builders tend to spec once and never second-guess — the internal wire stop and barrel serrations are what separate it from commodity disconnects that look identical on a data sheet but fail pull tests in the field. The 6.35×0.813mm tab geometry hits the universal .250" standard, so it integrates cleanly into any low-voltage control harness without adapter hardware.
Technical Highlights:
- Full Nylon Insulation to 600V: UL 310 and CSA 22.2 No. 153 listed at 600V — covers the full range of 24VDC control wiring up through 120VAC/240VAC auxiliary circuits without a separate insulating sleeve.
- 105°C Insulation Rating: UL 94V-2/HB at 105°C means you can route these terminals near motor drive heat sinks or transformer secondaries without the insulation softening and creeping off the barrel — a real failure mode on terminals rated only to 75°C or 90°C.
- Internal Barrel Serrations: The barrel serrations are the mechanical pull-out resistance mechanism — not just crimp compression. In vibrating enclosures (motor control centers, rooftop HVAC panels, mobile equipment), that means the conductor stays seated through thermal cycling and vibration fatigue.
Deployment Considerations:
- The CT-1525 or CT-2300/ST with CD-525 die are the specified tools — a non-Panduit ratchet crimp tool will almost certainly produce the wrong compression profile on this barrel, and you won't see the failure until a pull test or field fault. Keep the matched tool on the bench when building with this part.
- Couplers and female counterparts are sold separately — the DNF14-250FIM-L is the male half only. If you're ordering for a new panel build, confirm you have matching female terminals and a coupler in your BOM before the job starts.
This terminal earns its place on the BOM for access control panel wiring, building automation controller terminations, and any low-voltage control enclosure where full insulation and reliable pull-out resistance are non-negotiable — particularly in panels that will be inspected by a third-party AHJ who requires both UL and CSA marks on the terminal itself.
