Strip Heaters 375 Strip

375 Strip

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W • Next day shipment on all stock units.

Strip Heaters 375 Strip Aptly named for its 0.375 inch (9.5 mm) thickness, the Watlow 375 strip is a rugged heater capable of both high temperatures and high watt densities. Its ruggedness comes from the design and use of choice materials. Watlow begins construction by accurately placing a coiled, nickelchrome element wire in the center of the heater. The element wire is then embedded in MgO-based insulation ... compacted into a solid mass that results in excellent heat conductivity and high dielectric strength. Finally, the heater is enclosed in aluminized steel sheathing.

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 applications where temperatures reach 1200°F (650°C). • Post terminals, welded to the element wire, produce strong, trouble-free connections. • Rigid 3⁄8 inch (9.5 mm) thick design enables the 375 strip heater to fit into many existing applications. UL® is a registered trademark of Underwriter’s Laboratories, Inc.

Strip Heaters

Performance Capabilities • Aluminized steel sheath temperatures to 1100°F (595°C) • Stainless steel sheath temperatures to 1200°F (650°C) • Watt densities to 130 W/in2 (20.2 W/cm2) • UL® approved to 240VÅ(ac) (File No. E52951) • CSA approved to 600VÅ(ac) (File No. LR7392)

Aluminized Steel Sheath Welded 10-24 Threaded Post Terminals

Mineral Insulation

Nickel Chromium Resistance Wire Mounting Slots

• Available dimensions are 11⁄2 inches (38 mm) wide, and 51⁄2 (140 mm) to 48 inches (1220 mm) long. • Next day shipment is available on 106 in-stock models in popular sizes and ratings.

Applications • Food warming • Freeze and moisture protection • • • • •

Tank and platen heating Packaging Dies and mold heating Autoclaves Ovens 241

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Strip Heaters 375 Strip Applications and Technical Data Calculating Watt Density Use the Maximum Allowable Watt Density graphs and formulas to ensure that the allowable watt density for the heater will not be exceeded in your application. Watt density is calculated for one side of the heater only.

Formulas: Wattage

Watt Density =

Heated Area Heated Area (Offset Terminals) = [Overall Length (A) x 1.5 in] - 6 in2 = [Overall Length (A) x 38.1 mm] - 38.7 cm2 Heated Area (Parallel Terminals) = [Overall Length (A) x 1.5 in] - 4.7 in2 = [Overall Length (A) x 38.1 mm] - 30.3 cm2 Heated Area (One-on-One Terminals) = [Overall Length (A) x 1.5 in] - 6.4 in2 = [Overall Length (A) x 38.1 mm] - 41.3 cm2

Maximum Allowable Watt Density Clamped Watt Density—W/cm2 2

4

6

8

10

12

375 Strip < 24" O.A.L.; bar clamped, operating in 70°F (21°C) ambient air

1000

600

375 Strip < 24" O.A.L.; bar clamped operating in insulated or enclosed environments

800

500 400

600 400

300

Units 24" and longer Consult Factory

200

Part Temperature—°C

Part Temperature—°F

1200

100

200

20

40

60

80

100

Watt Density—W/in2

Maximum Allowable Watt Density in Air Watt Density—W/cm2 2

4

6

8

10 600

Sheath Temperature (Aluminized Steel)

1000 800

400

70°F (21°C) ambient operating in still air

600 400

300

Sheath Temperature (Stainless Steel)

200 100

200

20

40

60

Watt Density—W/in2

242

500

80

100

Sheath Temperature—°C

Sheath Temperature—°F

1200

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Strip Heaters 375 Strip Termination Options

10-24 Threaded Terminals

1.18" (30 mm) 7/8" (22.2 mm)

* Tab removal available from stock or manufactured.

A 1/2" (12.7 mm) 3 8"

/

Offset Terminals* Two 10-24 threaded post terminals are offset from each other on the same end.

3/8" (9.5 mm)

(9.5 mm)

11 2"

/

7 8"

(38.1 mm)

(22.2 mm)

/

5 16"

1 2"

/ x / (7.9 x 12.7 mm) Mounting Slots

3/4" 11/2" (38.1 mm) (19.1 mm)

2 3/4" (69.9 mm)

1 1/4" (31.8 mm) Typ.

Heated Length

10-24 Threaded Terminals

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

1.18" (30 mm) 7/8" (22.2 mm)

3/8" (9.5 mm)

A

3 8"

/

(9.5 mm)

1/2" (12.7 mm) / / (7.9 x 12.7 mm) Mounting Slots

1 1/2" (38.1 mm)

5 16" x 1 2"

3/4" 1 1/2" (38.1 mm) (19.1 mm)

One-on-One Terminals* Two 10-24 threaded post terminals are placed one on each end.

Strip Heaters

1 7/8" (47.6 mm)

1 1/4" (31.8 mm) Typ.

Heated Length

10-24 Threaded Terminals

1.18" (30 mm) 7/8" (22.2 mm)

3/8" (9.5 mm)

0.950" (24.1 mm) A Heated Length

3 8"

/

(9.5 mm)

11/2" (38.1 mm)

5/16" x 1/2" (7.9 x 12.7 mm) Mounting Slots

1/2" (12.7 mm)

11/2" (38.1 mm)

C 1/2" (12.7 mm)

B

10-24 Threaded Terminals

In-Line Terminals* Two 10-24 threaded post terminals are in-line with each other on the same end.

1.18" (30 mm) 7/8" (22.2 mm)

3/8" (9.5 mm)

A 1/2" (12.7 mm)

7/8" 11/2" (38.1 mm) (22.2 mm) 3 8"

/

5 16"

x 1/2" (7.9 x 12.7 mm) Mounting Slots

/

(9.5 mm) 3/4" (19.0 mm) 11/2" (38.1 mm)

2 3/4" (69.9 mm)

Heated Length

1 1/4" (31.8 mm) Typ.

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Strip Heaters 375 Strip

Metallic Terminal Boxes

Termination Options

Metallic terminal boxes are available on offset terminals from stock. Terminal boxes act as a safety feature by covering the terminals.

Continued

Conduit may be attached to the box through 7⁄8 inch (22 mm) diameter holes in the ends of the box. To order, specify terminal box.

Variations

2"

21/2"

11/2"

2"

2"

Available in in-line terminals only.

Accessories

21/2"

Available on offset terminals from stock and manufactured.

Ceramic Terminal Covers A convenient and economic 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.

How to Order To order your stock 375 strip heater, specify: • Quantity • Watlow code number • Removal of mounting tabs, if desired If stock units do not meet application needs, Watlow can manufacture 375 strip heaters to special requirements.

For made-to-order units, please specify, in addition to above information: • Width • Heater length, including mounting tabs • Terminal type (offset, parallel or one-on-one)

Availability Stock: Next day shipment Made-to-Order: Please consult your Watlow sales engineer or authorized distributor.

Note: 5⁄16 inch (7.9 mm) x 1⁄2 inch (12.7 mm) mounting slots are supplied on all 375 strip heaters. Tabs can be removed upon request. Also, note Watlow code number specifies that the 375 strip heater comes with an aluminized steel sheath. If you require a special sheath material, such as stainless steel, please consult your sales engineer or authorized distributor for material availability. ➀ Chromalox® and Wellman® part numbers are used as a cross reference to help you select the equivalent Watlow code number. Chromalox® sizes 27 inches and longer, and all Wellman® sizes, will have mounting slot center to center distances 1⁄8 inch less than Watlow spacing.

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Strip Heaters

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

375 Strip Width in (mm)

Length in (mm) (139.7) (139.7) (153.0) (153.0) (153.0) (153.0) (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) (203.2) (203.2) (241.3) (266.7) (266.7) (266.7) (266.7) (266.7) (266.7) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (304.8) (355.6) (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)

Parallel Parallel Parallel Parallel Parallel Parallel Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset 1-on-1 1-on-1 1-on-1 Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset Offset 1-on-1 1-on-1 1-on-1 Offset Offset Offset Offset 1-on-1 Offset Offset Offset Offset Offset Offset Offset Offset Offset

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

125 250 150 150 300 300 150 150 200 150 150 175 175 250 250 400 400 500 500 150 150 200 250 250 350 350 400 400 250 250 350 350 500 500 250 250 500 300 300 500 500 300 325 325 500 350 350 375 375 500 500

Watt Density W/in2 (W/cm2) 35 70 35 35 70 70 29 29 38 25 25 29 29 42 42 67 67 83 83 24 24 23 26 26 36 36 41 41 21 21 29 29 42 42 20 20 40 20 20 33 33 20 19 19 30 17 17 18 18 24 24

(5.4) (10.8) (5.4) (5.4) (10.8) (10.8) (4.5) (4.5) (5.9) (3.9) (3.9) (4.5) (4.5) (6.5) (6.5) (10.4) (10.4) (12.9) (12.9) (3.7) (3.7) (3.6) (4.0) (4.0) (5.6) (5.6) (6.4) (6.4) (3.3) (3.3) (4.5) (4.5) (6.5) (6.5) (3.1) (3.1) (6.2) (3.1) (3.1) (5.1) (5.1) (3.1) (2.9) (2.9) (4.6) (2.6) (2.6) (2.8) (2.8) (3.7) (3.7)

Approx. Avail. Net Wt. lbs (kg) 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.9 0.9 0.9 0.9 0.9 1.0 1.0 1.0 1.2 1.2 1.2 1.2 1.2 1.2

(0.18) (0.18) (0.18) (0.18) (0.18) (0.18) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.23) (0.27) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.32) (0.36) (0.36) (0.36) (0.36) (0.36) (0.36) (0.36) (0.41) (0.41) (0.41) (0.41) (0.41) (0.45) (0.45) (0.45) (0.54) (0.54) (0.54) (0.54) (0.54) (0.54)

Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk

Code No.

SGA1J5JP1 SGA1J5JP2 SGA1J6AP2 SGA1J6AP3 SGA1J6AP4 SGA1J6AP5 SGA1J7J01 SGA1J7J02 SGA1J7J03 SGA1J8A01 SGA1J8A05 SGA1J8A06 SGA1J8A07 SGA1J8A02 SGA1J8A08 SGA1J8A09 SGA1J8A010 SGA1J8A03 SGA1J8A04 SGA1J8AT1 SGA1J8AT2 SGA1J9JT1 SGA1J10J01 SGA1J10J02 SGA1J10J08 SGA1J10J05 SGA1J10J06 SGA1J10J07 SGA1J12A01 SGA1J12A02 SGA1J12A05 SGA1J12A06 SGA1J12A03 SGA1J12A04 SGA1J12AT1 SGA1J12AT2 SGA1J12AT3 SGA1J14A02 SGA1J14A01 SGA1J14A03 SGA1J14A04 SGA1J14AT1 SGA1J15E02 SGA1J15E03 SGA1J15E04 SGA1J17R04 SGA1J17R05 SGA1J17R06 SGA1J17R07 SGA1J17R01 SGA1J17R02

Chromolox® Code No. ➀ Rust Resist. Chrome Stl. Iron Sheath Sheath PT-512 — PT-615 PT-615 — — OT-715 OT-715 — OT-815 OT-815 OT-817 OT-817 — — — — — — S-815 S-815 S-920 OT-1025 OT-1025 — — — — OT-1225 OT-1225 — — — — S-1225 S-1225 — OT-1430 OT-1430 — — S-1430 OT-1532 OT-1532 — OT-1835 OT-1835 OT-1837 OT-1837 OT-1850 OT-1850

— PT-502 — — PT-603 PT-603 — — OT-702 — — — — OT-802 OT-802 OT-804 OT-804 — — — — — — — OT-1003 OT-1003 OT-1004 OT-1004 OT-1202 OT-1202 OT-1203 OT-1203 OT-1205 OT-1205 S-1202 S-1202 S-1205 — — OT-1405 OT-1405 — — — OT-1505 — — — — — —

Wellman® Code No.➀ Aluminized Chrome Stl. Steel Sheath Sheath — — — — — — SS1041 SS1052 — SS1061 SS1072 SS1081 SS1092 — — — — — — SD1021 SD1032 SD1041 SS1101 SS1102 — — — — SS1141 SS1152 — — — — SD1061 SD1072 — SS1181 SS1192 — — SD1131 SS1201 SS1212 — SS1221 SS1232 SS1241 SS1252 SS1261 SS1272

— — — — — — — — SS2052 — — — — SS2061 SS2072 SS2081 SS2092 — — — — — — — SS2101 SS2112 SS2131 SS2132 — — SS2141 SS2152 SS2161 SS2172 SD2071 SD2082 SD2122 — — SS2181 SS2192 — — — SS2212 SS2221 SS2232 — — SS2241 SS2252

Strip Heaters

11⁄2 (38.1) 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 81⁄2 81⁄2 91⁄2 101⁄2 101⁄2 101⁄2 101⁄2 101⁄2 101⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 121⁄2 141⁄2 141⁄2 141⁄2 141⁄2 141⁄2 151⁄4 151⁄4 151⁄4 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8 177⁄8

Term. Volts Power (Watts)

CONTINUED Wellman® is a registered tradename of Wellman Thermal Systems Corp. Chromolox® is a registered tradename of Chromolox Industrial Heaters Products.

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375 Strip Width in (mm)

Length in (mm)

Term. Volts Power (Watts)

11⁄2 (38.1) 177⁄8 (454.0) Offset 177⁄8 (454.0) Offset 177⁄8 (454.0) Offset 177⁄8 (454.0) Offset 177⁄8 (454.0) 1-on-1 177⁄8 (454.0) 1-on-1 177⁄8 (454.0) 1-on-1 177⁄8 (454.0) 1-on-1 177⁄8 (454.0) 1-on-1 191⁄2 (495.3) Offset 191⁄2 (495.3) Offset 191⁄2 (495.3) Offset 191⁄2 (495.3) Offset 191⁄2 (495.3) Offset 191⁄2 (495.3) 1-on-1 211⁄2 (533.4) Offset 211⁄2 (533.4) Offset 211⁄2 (533.4) Offset 211⁄2 (533.4) Offset 211⁄2 (533.4) 1-on-1 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) Offset 233⁄4 (603.3) 1-on-1 233⁄4 (603.3) 1-on-1 233⁄4 (603.3) 1-on-1 233⁄4 (603.3) 1-on-1 233⁄4 (603.3) 1-on-1 233⁄4 (603.3) 1-on-1 251⁄2 (647.7) Offset 251⁄2 (647.7) Offset 251⁄2 (647.7) Offset 251⁄2 (647.7) Offset 251⁄2 (647.7) Offset 263⁄4 (679.5) Offset 263⁄4 (679.5) Offset 301⁄2 (774.7) Offset 301⁄2 (774.7) Offset 301⁄2 (774.7) 1-on-1 331⁄2 (850.9) Offset 331⁄2 (850.9) 1-on-1 357⁄8 (911.2) Offset 357⁄8 (911.2) Offset 357⁄8 (911.2) Offset 357⁄8 (911.2) 1-on-1 381⁄2 (977.9) Offset 381⁄2 (977.9) Offset 421⁄2(1079.5) Offset 477⁄8(1216.0) Offset

246

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

750 750 1000 1000 500 500 750 1000 1000 350 500 500 750 1000 750 500 500 750 750 500 500 500 750 750 1000 1000 1500 250 500 750 1000 1000 1500 500 500 750 750 1000 700 1000 750 750 750 750 1000 1000 1000 1500 1000 1000 1500 1500 2250

Watt Density W/in2 (W/cm2) 36 36 48 48 24 24 35 47 47 15 22 22 32 43 32 20 20 29 29 19 17 17 25 25 34 34 51 8 17 25 33 33 50 16 16 23 23 31 21 29 19 19 19 17 22 21 21 31 21 19 29 26 34

(5.6) (5.6) (7.4) (7.4) (3.7) (3.7) (5.4) (7.3) (7.3) (2.3) (3.4) (3.4) (5.0) (6.7) (5.0) (3.1) (3.1) (4.5) (4.5) (2.9) (2.6) (2.6) (3.9) (3.9) (5.3) (5.3) (7.9) (1.2) (2.6) (3.9) (5.1) (5.1) (7.7) (2.5) (2.5) (3.6) (3.6) (4.8) (3.3) (4.5) (2.9) (2.9) (2.9) (2.6) (3.4) (3.3) (3.3) (4.8) (3.3) (2.9) (4.5) (4.0) (5.3)

Approx. Avail. Net Wt. lbs (kg) 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.2 1.3 1.3 1.3 1.3 1.3 1.3 1.4 1.4 1.4 1.4 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.7 1.7 1.7 1.7 1.7 1.7 1.7 2.0 2.0 2.0 2.2 2.2 2.3 2.3 2.3 2.3 2.5 2.5 2.8 3.1

(0.54) (0.54) (0.54) (0.54) (0.54) (0.54) (0.54) (0.54) (0.54) (0.59) (0.59) (0.59) (0.59) (0.59) (0.59) (0.64) (0.64) (0.64) (0.64) (0.64) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.68) (0.77) (0.77) (0.77) (0.77) (0.77) (0.77) (0.77) (0.91) (0.91) (0.91) (1.0) (1.0) (1.0) (1.0) (1.0) (1.0) (1.1) (1.1) (1.3) (1.4)

Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk Stk

Code No.

SGA1J17R09 SGA1J17R08 SGA1J17R010 SGA1J17R03 SGA1J17RT1 SGA1J17RT2 SGA1J17RT3 SGA1J17RT4 SGA1J17RT5 SGA1J19J06 SGA1J19J07 SGA1J19J04 SGA1J19J08 SGA1J19J01 SGA1J19JT1 SGA1J21A01 SGA1J21A02 SGA1J21A03 SGA1J21A04 SGA1J21AT1 SGA1J23N05 SGA1J23N06 SGA1J23N01 SGA1J23N02 SGA1J23N07 SGA1J23N03 SGA1J23N04 SGA1J23NT1 SGA1J23NT3 SGA1J23NT5 SGA1J23NT6 SGA1J23NT7 SGA1J23NT8 SGA1J25J01 SGA1J25J02 SGA1J25J03 SGA1J25J04 SGA1J25J05 SGA1J26N01 SGA1J26N02 SGA1J30J02 SGA1J30J03 SGA1J30JT1 SGA1J33J01 SGA1J33JT1 SGA1J35R04 SGA1J35R03 SGA1J35R01 SGA1J35RT1 SGA1J38J02 SGA1J38J03 SGA1J42J01 SGA1J47R01

Chromolox® Code No. ➀ Rust Resist. Chrome Stl. Iron Sheath Sheath — — — — S-1850 S-1850 — — — OT-1935 OT-1950 OT-1950 — — — OT-2150 OT-2150 — — S-2050 OT-2450 OT-2450 OT-2475 OT-2475 — — — S-2425 S-2450 — — — — OT-2550 OT-2550 OT-2575 OT-2575 — OT-2670 — OT-3075 OT-3075 S-3075 OT-3375 — OT-3610 OT-3610 — S-3610 OT-3810 — — —

OT-1807 OT-1807 OT-1801 OT-1801 S-1805 S-1805 S-1807 S-1801 S-1801 — OT-1905 OT-1905 OT-1907 OT-1901 S-1907 — — OT-2107 OT-2107 S-2005 OT-2405 OT-2405 OT-2407 OT-2407 OT-2401 OT-2401 OT-2415 — S-2404 S-2407 S-2401 S-2401 S-2415 — — OT-2507 OT-2507 OT-2501 — OT-2601 OT-3007 OT-3007 S-3007 OT-3307 S-3301 SS1531 — OT-3601 S-3601 OT-3801 OT-3815 OT-4315 OT-4822

Wellman® Code No. ➀ Aluminized Chrome Stl. Steel Sheath Sheath — — — — SD1211 SD1222 — — — SS1301 — — — — — SS1341 SS1352 — — SD1291 SS1361 SS1372 SS1391 SS1402 — — — SD1322 SD1342 — — — — SS1421 SS1432 SS1441 SS1452 — SS1472 — SS1481 SS1492 SD1452 SS1522 — SS1531 SS1542 SS2552 SD1492 SS1581 — SS1632 —

SS2261 SS2272 SS2281 SS2292 SD2171 SD2182 SD2202 SD2211 SD2222 — SS2301 SS2312 — SS2332 SD2262 — — SS2341 SS2352 SD2291 SS2361 SS2372 SS2381 SS2392 SS2401 SS2412 — — SD2322 SD2352 SD2361 SD2372 — — — SS2421 SS2432 SS2452 — SS2472 — SS2482 — SS2522 SD2472 — SS2532 — SD2492 SS2561 — SS2632 —