S MA LL TER M INA L S B-74 | www.hubbell.com/burndy Bare Ferrules for Larger Copper Conductor TYPE YF-UIL Bare Ferrules For Use on Copper Conductor The efficiency of UL Listed Large Ferrules are showcased in their design to meet UL486L specifications for secure, fray-free wire connections. These ferrules work together with our versatile tooling options such as the dieless PAT81KFT and PAT750 Series used with U-Dies, providing tailored crimp shapes that enhance reliability. They can also be paired with BURNDY mechanical connectors, allowing for the safe use of flexible conductors in various applications. Catalog Number Wire Size Dimensions in Inches Installation Tooling AWG D1 Dim [mm] D2 Dim [mm] L1 Dim [mm] Dieless 750 Series Tools Nest Indentor YF2/022UIL 2/0 AWG H, I, K, M, DLO 0.48 [12.1] 0.57 [14.6] 0.87 [22.0] 81K Series 1 Crimp U26F1 UY27F1 YF3/025UIL 3/0 AWG G, H, I, K, M, DLO 0.56 [14.2] 0.66 [16.7] 0.98 [25.0] U27F1 YF4/032UIL 4/0 AWG G*, H, I, K, M*, DLO 0.59 [15.0] 0.69 [17.5] 1.26 [32.0] U29F1 UY31F1 YF25032UIL 250 kcmil G*, H, I, K, 262 DLO 0.68 [17.3] 0.78 [19.8] 1.26 [32.0] YF30032UIL† 300 kcmil G, H, I, K, M, 313 DLO † 0.75 [19.1] 0.85 [21.6] 1.26 [32.0] U31F1 UY31F1 YF35032UIL 350 kcmil G, H, I, K, 373 DLO 0.81 [20.5] 0.93 [23.5] 1.26 [32.0] U31F1 UY31F1 YF40032UIL† 400 kcmil G, H, I, K, M, 444 DLO † 0.88 [22.5] 1.00 [25.5] 1.26 [32.0] — U32F1 UY39F1 YF50032UIL 500 kcmil G, H, I, K, 535 DLO 0.93 [23.7] 1.05 [26.7] 1.26 [32.0] U34F1 YF60040UIL 600 kcmil G, H, I, K, 646 DLO 1.03 [26.2] 1.15 [29.2] 1.57 [40.0] U36F1 YF77740UIL 750 kcmil G, H, I, 777 DLO 1.17 [29.0] 1.26 [32.0] 1.57 [40.0] U39F1 Installation from the PAT81K2 Installation from the PAT750 Features & Benefits • Made of electrolytic copper, tin plated • Seamless barrels • Smooth funnel entry to make wire insertion easier • RoHS compliant † Only Listed with DLO Cable * Listed with 81K ONLY
