Heater Catalog - Watlow

Strip/Clamp-On Heaters375 High-Temperature Strip HeatersTermination Options (Continued)Metallic Terminal Boxes - VariationsAccessoriesCeramic3 /8" (9.5 mm)Terminal Covers1 1 /2" 3(38.1 mm)/4"(19 mm)1 1 /2"(38.1 mm)7 /8"(22.2 mm)0.020 Tk. 5 Fins Per Inch2"(50.8 mm)2 in. (51 mm)2 in. (51 mm)1½ in. (38 mm)5/16" x 1 /2"(7.9 mm x 12.7 mm)Mtg. Holes1 /2" (12.7 mm)Typ.2 3 /4"(69.8 mm)Heated LengthA1 1 /4"(31.7 mm)Typ.Available on in-line terminals only.Ceramic terminal covers offer a convenient and economicmethod7 /8"to insulate post terminals. They are sized for(22.2 mm)standard length posts with 10-24 screw thread size,supplied as an 7 /8" accessory item and shipped separately.(22.2 mm)Specify Z4918 and quantity.Typ.10-24 Threaded Terminals3 /8"(9.5 mm)1 3 /8"(34.9 mm)2½ in. (64 mm)2½ in. (64 mm)Secondary Insulation Bushings2 in. (51 mm)1 5 /8 in.(41.3 mm)3/8 in. (9.5 mm)1/4 in.-20 x 1 1 /2 in. Threaded Length Screw1/8 in. (3.2 mm)Available on offset terminals from stockand manufactured.Metallic terminal boxes are available from stock on offsetterminals. Terminal boxes act as a safety feature bycovering the terminals. A conduit may be attached to thebox through 7 /8 in. (22.2 mm) diameter holes in the endsof the box. To order, specify terminal box.3/8 in. (9.5 mm)Insulators are suitable when air heating and/or voltageto ground is a concern. A secondary insulation bushingkit, part number Z5230, contains one set of bushings forone heater. To accommodate bushings, 17 /32 x 11 /16 inchdiameter mounting holes must be specified whenordering the heater.484 WATLOW ®