Panduit EV14-6LFB-L StrongHold™ Locking Fork Terminal
The Panduit EV14-6LFB-L is a vinyl-insulated locking fork terminal engineered for 16–14 AWG stranded copper conductors terminating to #6 screws or studs. Part of Panduit's StrongHold™ series, this terminal incorporates a mechanical interlock that resists loosening under sustained vibration—critical for UPS battery strings, fire-alarm circuits, and access-control panels where connection integrity directly impacts system uptime. Zinc-plated barrel and tongue deliver corrosion resistance in equipment rooms and plenum-rated enclosures. UL 587-H listed and CSA certified. Supplied in 50-piece contractor packs.
Key Features
- StrongHold locking design – fork tongue retention tabs engage the screw shoulder, preventing rotation and terminal walk-off during thermal cycling or mechanical shock
- 16–14 AWG wire range – accepts single stranded-copper conductor; blue vinyl insulation color-coded per industry convention
- #6 screw compatibility – 0.25 in. (6.4 mm) fork width fits standard #6-32 and #6 sheet-metal screws on terminal blocks, bus bars, and grounding lugs
- 600 V vinyl insulation, UL 587-H flame rating – rated for continuous operation at 105°C conductor temperature; resists arc tracking
- Zinc-plated brass construction – prevents galvanic corrosion when mated to steel or brass hardware in mixed-metal assemblies
- UL E52164 / CSA LR31212 dual certification – validates mechanical pull-out strength, dielectric withstand, and flame propagation per NEC Article 110
- Panduit CT-series tool compatibility – specified for use with CT-100A, CT-1550, CT-2500 crimpers; die nest ensures consistent compression across production runs
The locking-fork geometry addresses a persistent failure mode in low-voltage DC circuits: screw terminals that loosen over months of temperature swing as wire expands and contracts. In battery-backed systems—UPS strings, fire panels, emergency lighting—a single high-resistance joint can drop enough voltage to trigger nuisance alarms or prevent proper failover. The EV14-6LFB-L's retention tabs create a mechanical lock independent of friction, surviving UL 486E thermal-shock testing and NFPA 72 seismic-rated vibration profiles. The 0.9 in. overall length fits tight junction boxes; vinyl insulation extends nearly to the barrel crimp, minimizing exposed conductor and simplifying NEC 300.14 box-fill calculations.
Field deployment favors projects where wire count is moderate but reliability requirements are strict: intrusion keypads fed from supervised aux power, PoE mid-span injector DC rails, and CCTV camera pigtails transitioning to terminal-block supplies. The #6 screw size aligns with most DIN-rail terminal blocks (Phoenix Contact, Weidmüller, Wago). Panduit publishes pull-force data for each CT-series tool; the CT-1550 ratchet crimper delivers 400+ lbf on 14 AWG, exceeding the 25 lbf UL minimum by 16×. Zinc plating withstands 96-hour salt-spray testing per ASTM B117, suitable for coastal equipment rooms and industrial plants where airborne chlorides accelerate copper oxidation.
StrongHold terminals carry the same UL wire-connector file number (E52164) as Panduit's PN-series non-insulated lugs, streamlining AHJ plan review when mixed terminal types appear on a single cut sheet. The competitor cross-reference (3M 83-7051, Thomas & Betts LFV14-6Q, Ideal TP14-6LF) confirms dimensional interchangeability with existing terminal-block layouts on retrofit projects. For integrators balancing first cost against lifecycle service expense, the locking feature reduces truck rolls on installations subject to shipping vibration or continuous mechanical load cycling. Supplied in 50-packs for single-site jobs and 500-unit cases for multi-building campuses.
