Watlow Heater Catalog

¾ in. NPT Knockout

0.475 in. (12.1 mm) Dia. Elements Thermowell

Immersion Heaters

2 ½ in. (64 mm) Bundle

5 ½ in. Dia. (140 mm)

2.50" WATROD

19

WATROD and FIREBAR Screw Plug Immersion Heaters Application: Bunker C, Asphalt and #6 Fuel Oil • 2 1 / 2 inch NPT screw plug • WATROD elements • With thermostat (DPST), Type 4, 5A or 7A • General purpose enclosure 19 2.50" WATROD

®

2 ⁄ in. (55.6 mm) Cold (Ref.)

6 ⁄ in. Dia. (174.6 mm)

®

"B"

¾ in. NPT Knockout

General Purpose

0.475 in. (12.1 mm) Dia. Elements Thermowell

2 ½ in. (64 mm) Bundle

5 ½ in. Dia. (140 mm)

2 ⁄ in. (55.6 mm) Cold (Ref.)

6 ⁄ in. Dia. (174.6 mm)

"B"

1 ½ in. NPT Hubs

Moisture/Explosion- Resistant

0.475 in. (12.1 mm) Dia. Elements

• Moisture/Explosion-Resistant enclosure (suitable for use in non-classified areas only) 2.50" WATROD

Thermowell

2 ½ in. (64 mm) Bundle

7 ⁄ in. Dia. (193.7 mm)

20

2 ⁄ in. (55.6 mm) Cold (Ref.)

8 ⁄ in. Dia. (211.1 mm)

"B"

1 ½ in. NPT Hubs Type 5A (60-250°F)

Type 4 (30-110°F)

0.475 in. (12.1 mm) Dia. Elements Type 7A (100-550°F)

WATCONNECT Part Number

WATCONNECT Part Number

WATCONNECT Part Number

“B” Dim. in. (mm)

Ship Wt. lbs (kg)

Part Number

Part Number

Part Number

Thermowell

Description Volts kW Ph

2 ½ in. (64 mm) Bundle Type K T/C

20 General Purpose Enclosure

General Purpose Enclosure

General Purpose Enclosure

7 ⁄ in. Dia. (193.7 mm) Type K T/C

2.50" WATROD

Type J T/C

Type J T/C

Type K T/C

Type J T/C

"B" 240 1.0 3 17 1 / 4 (438) 10 (5) BLS717E12S4 C/F C/F BLS717E12S5A C/F C/F BLS717E12S7 C/F C/F 480 1.0 3 17 1 / 4 (438) 10 (5) BLS717E13S4 C/F C/F BLS717E13S5A C/F C/F BLS717E13S7 C/F C/F 240 1.5 3 24 3 / 4 (629) 13 (6) BLS724N12S4 C/F C/F BLS724N12S5A C/F C/F BLS724N12S7 C/F C/F 480 1.5 3 24 3 / 4 (629) 13 (6) BLS724N13S4 C/F C/F BLS724N13S5A C/F C/F BLS724N13S7 C/F C/F 240 2.0 3 32 1 / 4 (819) 15 (7) BLS732E12S4 C/F C/F BLS732E12S5A C/F C/F BLS732E12S7 C/F C/F 480 2.0 3 32 1 / 4 (819) 15 (7) BLS732E13S4 C/F C/F BLS732E13S5A C/F C/F BLS732E13S7 C/F C/F 240 2.5 3 39 3 / 4 (1010) 16 (8) BLS739N12S4 C/F C/F BLS739N12S5A C/F C/F BLS739N12S7 C/F C/F 480 2.5 3 39 3 / 4 (1010) 16 (8) BLS739N13S4 C/F C/F BLS739N13S5A C/F C/F BLS739N13S7 C/F C/F 240 3.0 3 47 1 / 4 (1200) 18 (9) BLS747E12S4 C/F C/F BLS747E12S5A C/F C/F BLS747E12S7 C/F C/F 480 3.0 3 47 1 / 4 (1200) 18 (9) BLS747E13S4 C/F C/F BLS747E13S5A C/F C/F BLS747E13S7 C/F C/F 240 4.0 3 63 3 / 4 (1619) 21 (10) BLS763N12S4 C/F C/F BLS763N12S5A C/F C/F BLS763N12S7 C/F C/F 480 4.0 3 63 3 / 4 (1619) 21 (10) BLS763N13S4 C/F C/F BLS763N13S5A C/F C/F BLS763N13S7 C/F C/F 240 5.0 3 76 1 / 4 (1937) 24 (11) BLS776E12S4 C/F C/F BLS776E12S5A C/F C/F BLS776E12S7 C/F C/F 480 5.0 3 76 1 / 4 (1937) 24 (11) BLS776E13S4 C/F C/F BLS776E13S5A C/F C/F BLS776E13S7 C/F C/F 240 1.0 3 17 1 / 4 (438) 13 (6) BLS717E12C4 C/F C/F BLS717E12C5A C/F C/F BLS717E12C7A C/F C/F 480 1.0 3 17 1 / 4 (438) 13 (6) BLS717E13C4 C/F C/F BLS717E13C5A C/F C/F BLS717E13C7A C/F C/F 240 1.5 3 24 3 / 4 (629) 16 (8) BLS724N12C4 C/F C/F BLS724N12C5A C/F C/F BLS724N12C7A C/F C/F 480 1.5 3 24 3 / 4 (629) 16 (8) BLS724N13C4 C/F C/F BLS724N13C5A C/F C/F BLS724N13C7A C/F C/F 240 2.0 3 32 1 / 4 (819) 18 (9) BLS732E12C4 C/F C/F BLS732E12C5A C/F C/F BLS732E12C7A C/F C/F 480 2.0 3 32 1 / 4 (819) 18 (9) BLS732E13C4 C/F C/F BLS732E13C5A C/F C/F BLS732E13C7A C/F C/F 240 2.5 3 39 3 / 4 (1010) 19 (9) BLS739N12C4 C/F C/F BLS739N12C5A C/F C/F BLS739N12C7A C/F C/F 480 2.5 3 39 3 / 4 (1010) 19 (9) BLS739N13C4 C/F C/F BLS739N13C5A C/F C/F BLS739N13C7A C/F C/F 240 3.0 3 47 1 / 4 (1200) 21 (10) BLS747E12C4 C/F C/F BLS747E12C5A C/F C/F BLS747E12C7A C/F C/F 480 3.0 3 47 1 / 4 (1200) 21 (10) BLS747E13C4 C/F C/F BLS747E13C5A C/F C/F BLS747E13C7A C/F C/F 240 4.0 3 63 3 / 4 (1619) 24 (11) BLS763N12C4 C/F C/F BLS763N12C5A C/F C/F BLS763N12C7A C/F C/F 480 4.0 3 63 3 / 4 (1619) 24 (11) BLS763N13C4 C/F C/F BLS763N13C5A C/F C/F BLS763N13C7A C/F C/F 240 5.0 3 76 1 / 4 (1937) 27 (13) BLS776E12C4 C/F C/F BLS776E12C5A C/F C/F BLS776E12C7A C/F C/F 480 5.0 3 76 1 / 4 (1937) 27 (13) BLS776E13C4 C/F C/F BLS776E13C5A C/F C/F BLS776E13C7A C/F C/F 2 ⁄ in. (55.6 mm) Cold (Ref.) 8 ⁄ in. Dia. (211.1 mm) Moisture/ Explosion- Resistant Enclosure 5 Type J T/C Type K T/C Moisture/ Explosion- Resistant Enclosure 5 Type J T/C Type K T/C Moisture/ Explosion- Resistant Enclosure 5 Type J T/C

8 W/in 2 3 Steel Plug 3-Steel Elements (1.3 W/cm 2 )

Type K T/C

8 W/in 2 3 Steel Plug 3-Steel Elements (1.3 W/cm 2 )

Note: All screw plug bundles are designed to fit the inside diameter of the equivalent mating coupling. They will not fit into the equivalent pipe inside diameter.

C/F - Contact factory, go to www.watlow.com/en/contact-us

3 Wired for 3-phase operation only 5 No third party recognition

211