Strip Heaters 375 Finned Strip

New 375 Finned Strip

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Strip Heaters 375 Finned Strip Like its 375 strip counterpart, the 375 finned strip heater is constructed of highly-compacted MgO-based insulation, which conducts heat efficiently from the nickel-chrome element wire to the sheath. Two inch wide (51 mm) aluminized steel fins are attached in a way that maximizes surface contact so that heat is displaced and transferred into the air faster. Performance Capabilities • Aluminized steel sheath temperatures to 1100°F (595°C) • UL® approved to 240VÅ(ac) (File No. E52951) • CSA approved to 600VÅ(ac) (File No. LR7392)

Applications • Shrink tunnels • Duct heaters • Space heaters • Drying ovens • Incubators • Air heating • Load bank resistors

• • • •

Strip Heaters

Features and Benefits • Nickel-chrome element wire is centered in the heater to uniformly heat the strip. • Aluminized steel sheath operates at higher temperatures and resists corrosion better than iron-sheathed heaters. • Optional 430 stainless steel sheath is available for more corrosive environments. • Welded post terminals produce strong, trouble-free connections. • Rigid 3⁄8-inch (9.5 mm) thick design enables the 375 finned strip heater to fit into many existing applications. • Available lengths from 51⁄2 inches (140 mm) to 48 inches (1220 mm).

Aluminized Steel Sheath

Aluminized Steel Fins Nickel Chromium Resistance Wire MgO Insulation

Heat curing Ink drying Food warmers Moisture protection

• Process welding • Dehumidifiers ® is a registered trademark of • Stress relieving UL Underwriter’s Laboratories, Inc. ovens

Welded 10-24 Threaded Post Terminals

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Strip Heaters 375 Finned Strip Applications and Technical Data

Maximum Allowable Watt Density Watt Density—W/cm2 600

Ambient Air Temperature—°F

Formulas: Wattage

4

3

5 300

15 ft/sec (4.6 m/sec) Air Speed 10 ft/sec (3.0 m/sec) Air Speed 5 ft/sec (1.5 m/sec) Air Speed Still Air

500

Open air watt density is calculated for total heated surface area.

Watt Density =

2

400

200

300

100

200

100

Ambient Air Temperature—°C

Calculating Watt Density Use the graph and formulas to make certain that the maximum allowable watt density for the heater will not be exceeded in the application.

1

0

Heated Area

5

0

10

15

20

30

26

Watt Density—W/in2

Heated Area (Offset Terminals) = [Overall Length (A) - 4.00 in.] x 3.75 in. = [Overall Length (A) - 101.6 mm] x 95.25 mm Heated Area (Parallel Terminals) = [Overall Length (A) - 3.12 in.] x 3.75 in. = [Overall Length (A) - 79.25 mm] x 95.25 mm Heated Area (One-on-One Terminals) = [Overall Length (A) - 4.25 in.] x 3.75 in. = [Overall Length (A) - 107.95 mm] x 95.25 mm

Termination Options

Offset Terminals

11/2" (38.1 mm) 3 8" (9.5

/

Two 10-24 threaded post terminals are offset from each other on the same end. 0.020 Tk. 5 Fins Per Inch

7 8"

/

(22.2 mm)

mm)

11/2" 3 " 4 (38.1 mm)(19 /mm)

5 16" x 1 2"

/

/

(7.9 mm x 12.7 mm) Mtg. Holes

2" (50.8 mm)

1/2" (12.7 mm) Typ.

2 3/4" (69.8 mm)

Heated Length A

11/4" (31.7 mm) Typ.

10-24 Threaded Terminals

1.18" (30 mm) 3 8"

/

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7/8" (22.2 mm) Typ.

(9.5 mm)

13/8" (34.9 mm)

New 375 Finned Strip

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Strip Heaters 375 Finned Strip

0.020 Tk. 5 Fins Per Inch

11/2" (38.1 mm)

Termination Options 3 8" (9.5

/

Continued

11/2" (38.1 mm)

/

2" (50.8 mm)

(19 mm)

Parallel Terminals Two 10-24 threaded post terminals are used; both terminals on one end.

mm)

3 4"

1 2"

/ (12.7 mm) Typ.

5/16" x 1/2" (7.9 mm x 12.7 mm) Mtg. Holes

1 7/8" (47.6 mm)

Heated Length A

11/4" (31.7 mm) Typ.

10-24 Threaded Terminals

1.18" (30 mm)

/

/

(9.5 mm)

(9.5 mm) 7/8" (22.2 mm) Typ.

One-on-One Terminals

0.020 Tk. 5 Fins Per Inch

15/8" (41.2 mm)

Two 10-24 threaded post terminals are used; one terminal on each end.

13/8" (34.9 mm)

3 8"

3 8"

5/16" x 1/2" (7.9 mm x 12.7 mm) Mtg. Holes

Strip Heaters

3/4" (19 mm) 1 1/2" (38.1 mm)

2" (50.8 mm)

1/2" (12.7 mm) Typ. 2 1/8" (53.9 mm)

Heated Length

2 1/8" (53.9 mm)

A

10-24 Threaded Terminals

1.18" (30 mm) 3 8"

/

3 8"

/

13/8" (34.9 mm)

(9.5 mm)

(9.5 mm)

7 8"

/

(22.2 mm) Typ.

Ceramic Terminal Covers

Secondary Insulation Bushings /" Insulators are suitable for (41.3 1mm) / " (9.4 mm) use when air heating / "-20 x 1 / " Threaded Length Screw / " (3.2 mm) and/or voltage to ground / " (9.4 mm) is a concern. Secondary insulation bushing kit part number Z5230 contains one set of bushings for one heater. To diameter mounting holes must accommodate the be specified when ordering. bushings, 17⁄32 x 11⁄16 inch 58

38

14

18

38

12

A convenient and economical way to insulate post terminals. Sized for standard length posts. 10-24 screw thread size. These are supplied as an accessory item and shipped separately. Specify Z-4918 and quantity. 249

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Strip Heaters

F.O.B.: St. Louis, Missouri

375 Finned Strip How to Order To order stock 375 finned strip heater, specify: • 375 finned strip • Quantity • Watlow code number • Voltage • Wattage • Removal of mounting tabs, if desired

Width inches (mm)

Termination

11⁄2 (38.1)

Parallel Parallel Parallel Parallel Parallel Parallel Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset

If stock units do not meet application needs, Watlow can manufacture 375 finned strip heaters to special requirements. For made-to-order units, please specify, in addition to above information: • Width • Length, including mounting tabs • Terminal type (offset, parallel or one-on-one)

Length inches (mm) 51⁄2 51⁄2 61⁄2 61⁄2 61⁄2 61⁄2 71⁄2 71⁄2 71⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 81⁄2 101⁄2 101⁄2 101⁄2 101⁄2 101⁄2 101⁄2

(139.7) (139.7) (152.4) (152.4) (152.4) (152.4) (190.5) (190.5) (190.5) (203.2) (203.2) (203.2) (203.2) (203.2) (203.2) (203.2) (203.2) (203.2) (203.2) (266.7) (266.7) (266.7) (266.7) (266.7) (266.7)

Volts

Power (Watts)

120 120 120 240 120 240 120 240 240 120 240 120 240 120 240 120 240 120 240 120 240 120 240 120 240

125 250 150 150 300 300 150 150 200 150 150 175 175 250 250 400 400 500 500 250 250 350 350 400 400

W/in2 (W/cm2) 14 28 14 14 28 28 12 12 15 10 10 12 12 17 17 27 27 33 33 10 10 14 14 16 16

(2.1) (4.3) (2.1) (2.1) (4.3) (4.3) (1.8) (1.8) (2.3) (1.5) (1.5) (1.8) (1.8) (2.6) (2.6) (4.2) (4.2) (5.1) (5.1) (1.5) (1.5) (2.1) (2.1) (2.5) (2.5)

Availability Assembly Stock: Shipment within three working days Made-to-Order: Please consult your Watlow sales engineer or authorized distributor.

Approx. Net Wt. lbs (kg) 0.5 0.5 0.5 0.5 0.5 0.5 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.9 0.9 0.9 0.9 0.9 0.9

(0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.40) (0.40) (0.40) (0.40) (0.40) (0.40)

Availability Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy.

Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock

Code No. SGA1J5JY2 SGA1J5JY3 SGA1J6AY1 SGA1J6AY2 SGA1J6AY3 SGA1J6AY4 SGA1J7JW1 SGA1J7JW2 SGA1J7JW3 SGA1J8AW2 SGA1J8AW3 SGA1J8AW4 SGA1J8AW5 SGA1J8AW6 SGA1J8AW7 SGA1J8AW8 SGA1J8AW9 SGA1J8AW10 SGA1J8AW11 SGA1J10JW1 SGA1J10JW2 SGA1J10JW3 SGA1J10JW4 SGA1J10JW5 SGA1J10JW6 CONTINUED

Note: 375 finned strip heaters with one-on-one terminations are available only as a manufactured item. Please contact a Watlow sales engineer for additional information. Note: 5⁄16 x 1⁄2 inch (7.9 x 12.7 mm) mounting slots are supplied on all 375 finned strip heaters. Tabs can be removed upon request.

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Strip Heaters 375 Finned Strip Width inches (mm) 11⁄2

(38.1)

Termination

121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 141⁄2 141⁄2 141⁄2 141⁄2 151⁄4 151⁄4 151⁄4 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 191⁄2 191⁄2 191⁄2 191⁄2 191⁄2 211⁄2 211⁄2 211⁄2 211⁄2

(304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (355.6) (355.6) (355.6) (355.6) (387.4) (387.4) (387.4) (454.0) (454.0) (454.0) (454.0) (454.0) (454.0) (454.0) (454.0) (454.0) (454.0) (495.3) (495.3) (495.3) (495.3) (495.3) (533.4) (533.4) (533.4) (533.4)

Volts

Power (Watts)

120 240 120 240 120 240 120 240 120 240 120 240 240 120 240 120 240 120 240 120 240 120 240 240 120 240 240 240 120 240 120 240

250 250 350 350 500 500 300 300 500 500 325 325 500 350 350 375 375 500 500 750 750 1000 1000 350 500 500 750 1000 500 500 750 750

W/in2 (W/cm2) 8 8 12 12 17 17 8 8 13 13 8 8 12 8 8 9 9 12 12 18 18 24 24 6 9 9 13 17 8 8 12 12

(1.2) (1.2) (1.8) (1.8) (2.6) (2.6) (1.2) (1.2) (2.0) (2.0) (1.2) (1.2) (1.8) (1.2) (1.2) (1.4) (1.4) (1.8) (1.8) (2.8) (2.8) (3.7) (3.7) (.9) (1.4) (1.4) (2.0) (2.6) (1.2) (1.2) (1.8) (1.8)

Approx. Net Wt. lbs (kg) 1.0 1.0 1.0 1.0 1.0 1.0 1.2 1.2 1.2 1.2 1.4 1.4 1.4 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.7 1.7 1.7 1.7 1.7 1.9 1.9 1.9 1.9

(0.45) (0.45) (0.45) (0.45) (0.45) (0.45) (0.54) (0.54) (0.54) (0.54) (0.64) (0.64) (0.64) (0.73) (0.73) (0.73) (0.73) (0.73) (0.73) (0.73) (0.73) (0.73) (0.73) (0.77) (0.77) (0.77) (0.77) (0.77) (0.86) (0.86) (0.86) (0.86)

Availability Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy.

Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock

Code No. SGA1J12AW1 SGA1J12AW2 SGA1J12AW3 SGA1J12AW4 SGA1J12AW5 SGA1J12AW6 SGA1J14AW1 SGA1J14AW2 SGA1J14AW3 SGA1J14AW4 SGA1J15EW1 SGA1J15EW2 SGA1J15EW3 SGA1J17RW1 SGA1J17RW2 SGA1J17RW3 SGA1J17RW4 SGA1J17RW5 SGA1J17RW6 SGA1J17RW7 SGA1J17RW8 SGA1J17RW9 SGA1J17RW10 SGA1J19JW2 SGA1J19JW3 SGA1J19JW4 SGA1J19JW5 SGA1J19JW6 SGA1J21AW3 SGA1J21AW4 SGA1J21AW5 SGA1J21AW6 CONTINUED

Note: 375 finned strip heaters with one-on-one terminations are available only as a manufactured item. Please contact a Watlow sales engineer for additional information. Note: 5⁄16 x 1⁄2 inch (7.9 x 12.7 mm) mounting slots are supplied on all 375 finned strip heaters. Tabs can be removed upon request.

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Strip Heaters

Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset

Length inches (mm)

New 375 Finned Strip

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Strip Heaters 375 Finned Strip Width inches (mm) 11⁄2

(38.1)

Termination Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset

Length inches (mm) 233⁄4 (603.3) 233⁄4 (603.3) 233⁄4 (603.3) 233⁄4 (603.3) 233⁄4 (603.3) 251⁄2 (647.7) 251⁄2 (647.7) 251⁄2 (647.7) 251⁄2 (647.7) 251⁄2 (647.7) 263⁄4 (679.5) 261⁄4 (679.5) 301⁄2 (774.7) 301⁄2 (774.7) 331⁄2 (850.9) 357⁄8 (911.2) 357⁄8 (911.2) 357⁄8 (911.2) 381⁄2 (977.9) 381⁄2 (977.9) 421⁄2 (1079.5) 477⁄8 (1216.0)

Volts

Power (Watts)

240 240 120 240 240 120 240 120 240 240 240 240 120 240 240 120 240 240 120 240 240 240

500 750 1000 1000 1500 500 500 750 750 1000 700 1000 750 750 750 1000 1000 1500 1000 1500 1500 2250

W/in2 (W/cm2) 7 10 14 14 20 6 6 9 9 12 8 12 8 8 7 8 8 13 8 11 10 16

(1.0) (1.5) (2.1) (2.1) (3.1) (.9) (.9) (1.4) (1.4) (1.8) (1.2) (1.8) (1.2) (1.2) (1.0) (1.2) (1.2) (2.0) (1.2) (1.7) (1.5) (2.4)

Approx. Net Wt. lbs (kg) 2.1 2.1 2.1 2.1 2.1 2.3 2.3 2.3 2.3 2.3 2.4 2.4 2.7 2.7 3.0 3.2 3.2 3.2 3.4 3.4 3.8 4.3

(0.95) (0.95) (0.95) (0.95) (0.95) (1.0) (1.0) (1.0) (1.0) (1.0) (1.1) (1.1) (1.2) (1.2) (1.4) (1.5) (1.5) (1.5) (1.5) (1.5) (1.7) (2.0)

Availability Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy. Assy.

Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock Stock

Code No. SGA1J23NW3 SGA1J23NW5 SGA1J23NW6 SGA1J23NW7 SGA1J23NW8 SGA1J25JW2 SGA1J25JW3 SGA1J25JW4 SGA1J25JW5 SGA1J25JW6 SGA1J26NW2 SGA1J26NW3 SGA1J30JW1 SGA1J30JW2 SGA1J33JW1 SGA1J35RW1 SGA1J35RW2 SGA1J35RW3 SGA1J38JW2 SGA1J38JW3 SGA1J42JW1 SGA1J47RW2

Note: 375 finned strip heaters with one-on-one terminations are available only as a manufactured item. Please contact a Watlow sales engineer for additional information. Note: 5⁄16 x 1⁄2 inch (7.9 x 12.7 mm) mounting slots are supplied on all 375 finned strip heaters. Tabs can be removed upon request.

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