BT-27

Types H & BT .652" (16.56mm) Center-to-Center Spacing High Voltage/Current Features: ‡ Sectional, High and Medium Power Terminal Blocks – Designed for high power applications and control/power circuits respectively. Units approach power ratings of larger terminal blocks whlie retaining increased circuit density of low power designs. ‡ Broad Terminal Choice – One thru 30 terminals on .652" center-to-center spacing with white fiber circuit marking strips. ‡ Thru-Bolt Barrier-Type Construction – Rated at 75A/600V for Type H; 30A/600V for Type BT. ‡ Unique Bar and Traveling Collar Design – Eliminates lugging of wire on Type H. UL recognized for No. 16AWG to No. 4AWG. Type BT uses two No. 10-32 terminal screws, UL recognized for No. 22AWG to No. 10AWG. ‡ Combined Style Flexibility – Types can be used in combination as well as be combined with types L, O, S, T & U for greater application flexibility. ‡ Recognition and Listing – UL recognized and CSA certified TYPE H Recognized under the Components Program of Underwriters Laboratories, Inc. Standard 1059, Guide No. XCFR2, File No. E62557. BARRIER STYLE Guide No. 184-N-90, Report No. LR39186-1. TERMINAL DESIGNATIONS TYPE BT H Types H & BT Terminal Variations H high-presure solderless connector BT Brass bar with high-pressure solderless connectors accepting wire form No. 16AWG to 4AWG. Brass terminal bar with two No. 10-32 plated steel terminal screws accepting wire up to No. 10AWG. Types H & BT Dimensions O.D. BT terminal bar with two No. 10-32 screws .25 (6.35) 1.25 (31.75) M.D. 1.50 1.00 (38.1) (25.4) .218 x .375 Lg. Mtg. Holes (5.53) x (9.52) .652 (16.56) .50 (12.7) Marking Strip NOTE: mm dim. are shown in parentheses 46 www.curtisind.com Curtis Industries A Division of Powers Holdings, Inc. 6SHci¿cDtionssuEMHcttocKDnJH. Dimensions are shown for reference purposes only. 6SeFi¿Fations: Number of Terminals Mounting Dimensions Inches Types H and BT terminal blocks are ordered by listing a model number made up of the model designation followed by the number of terminals required for the application. Example: a 10-pole terminal block becomes H-10 or BT-10 When ordering combinations of both types, the model number is made up of both model designations followed by total number of poles and number of each type.A composite of three H terminals followed by two BT terminals thus is converted to stock number HBT-5 (3H, 2BT). Inches Metric (mm) 1 1.66 42.1 2.36 59.8 2 2.31 58.6 3.01 76.4 3 2.96 75.1 3.66 92.9 4 3.61 91.6 4.31 109.4 5 4.26 108.1 4.96 126.0 6 4.91 124.6 5.61 142.5 7 5.56 141.1 6.26 159.1 8 6.21 157.6 6.92 175.6 9 6.86 174.1 7.57 192.2 10 7.51 190.6 8.22 208.7 11 8.16 207.1 8.87 225.3 12 8.81 223.6 9.52 241.8 13 9.46 240.2 10.17 258.4 14 10.10 256.6 10.82 274.9 15 10.75 273.2 11.48 291.5 16 11.40 289.7 12.13 308.0 17 12.05 306.2 12.78 324.6 18 12.70 322.7 13.43 341.1 19 13.35 339.2 14.08 357.7 20 14.00 355.7 14.73 374.2 21 14.65 372.2 15.39 390.8 22 15.30 388.7 16.04 407.3 23 15.95 405.2 16.69 423.9 24 16.60 421.7 17.34 440.4 25 17.25 438.2 17.99 457.0 26 17.40 454.7 18.64 473.5 27 18.55 471.2 19.29 490.1 28 19.20 487.7 19.95 506.6 29 19.85 504.2 20.60 523.2 30 20.50 520.7 21.25 539.7 BARRIER STYLE How to Order Metric (mm) Overall Dimensions High Voltage/Current Center-to-Center Spacing: .652" (16.56mm) Wire Range: H: UL Recognized for 16AWG to No. 4AWG HT: UL Recognized for 22AWG to No. 10AWG No. of Terminals: 1 thru 30 Voltage Rating: CSA: 600V UL: 600V General Industrial Tightening Torque: TH: 45 in.-lb. (4WG to 6AWG) 40 in.-lb. (8AWG) 35 in.-lb. (10AWG to 16AWG) BT: 20 in. - lbs. Current Rating: H: 75 amps BT: 30 amps, UL and CSA. Housing: Material Thermoplastic-Polyester Continuous Use Temp. (UL Index) 130°C (266°F) Flammability Rating 94V-0 Water Absorption (24 hrs. % wt. gain) 0.7% Chemical Resistance Excellent in most environments Breakdown Voltage: BT H Terminal - Terminal 10,400V Typ. 8,100V Typ. Terminal - Ground 8,400V Typ. 7,600V Typ. Note: Speci¿cations contained herein are subMect to change without notice. Dimensions shown are ± 0.030" Series H & BT Accessories COVERS Series H & BT – Two cover styles. Hinged cover of 3/16" thick black bakelite pivoting from special end brackets provide ready access to block. Factory-assembled and available only with original terminal block order. Plain cover of 1/16" thick black bakelite is permanently positioned to block with two screws. Factory-assembled or customer-installed. To order, specify: H/BT (Plain) – Part No. 260A49 – 1 thru 30 terminals H (Hinged) – Part No. 260A56 – 1 thru 30 terminals BT (Hinged) – Part No. 250A122 – 1 thru 30 terminals Dimensions are in inches and millimeters unless otherwise speci¿ed. Values in parentheses are metric equivalents. Curtis Industries A Division of Powers Holdings, Inc. 1-800-657-0853 47