Watlow Heater Catalog

Immersion Heaters

WATROD and FIREBAR Screw Plug Immersion Heaters

®

®

Application: Process Water • 2 1 / 2 inch NPT screw plug • FIREBAR elements • With thermostat (DPST), Type 5A or 7A Note: Higher amperage products require a pilot duty thermostat with separate power controller. Please see following pages for available heaters without thermostats. • General purpose enclosure • Moisture/Explosion-Resistant enclosure (suitable for use in non-classified areas only) 2.50" FIREBAR 2.50" FIREBAR

General Purpose

¾ in. NPT Knockout

(3) 1 in. (25 mm) FIREBAR Elements

Thermowell

2 ½ in. (64 mm) Bundle

5 ½ in. Dia. (140 mm)

23

3 ⁄ in. (85.7 mm) Cold (Ref.)

7 ⁄ in. Dia. (179.4 mm)

"B"

Moisture/Explosion- Resistant

1 ½ in. NPT Hubs

(3) 1 in. (25 mm) FIREBAR Elements

Thermowell

2 ½ in. (64 mm) Bundle

7 ⁄ in. Dia. (193.7 mm)

24

3 ⁄ in. (85.7 mm) Cold (Ref.)

8 ⁄ in. Dia. (219.1 mm)

"B"

Type 5A (60 to 250°F)

Type 7A (100 to 550°F)

WATCONNECT Part Number

WATCONNECT Part Number

“B” Dim. in. (mm)

Ship Wt. lbs (kg)

Part Number

Part Number

Description Volts kW Ph

Type J T/C

Type K T/C

Type J T/C

Type K T/C

General Purpose Enclosure

General Purpose Enclosure

45 W/in 2 8 304 SS Plug 3-Alloy 800

BLNF12A27S5A BLNF14J27S5A BLNF17A27S5A BLNF21J27S5A

C/F C/F BLNF12A27S7A C/F C/F BLNF14J27S7A C/F C/F BLNF17A27S7A C/F C/F BLNF21J27S7A

C/F C/F C/F C/F C/F C/F C/F C/F

240 6.0 3 12 (305) 12 (6) 240 7.5 3 14 1 / 2 (368) 12 (6) 240 9.0 3 17 (432) 13 (6) 240 12.0 3 21 1 / 2 (546) 15 (7)

Elements (7 W/cm 2 )

Type J T/C

Type K T/C

Type J T/C

Type K T/C

Moisture/Explosion- Resistant Enclosure 5

Moisture/Explosion- Resistant Enclosure 5

45 W/in 2 8 304 SS Plug 3-Alloy 800

BLNF12A27C5A BLNF14J27C5A BLNF17A27C5A BLNF21J27C5A

C/F C/F BLNF12A27C7A C/F C/F BLNF14J27C7A C/F C/F BLNF17A27C7A C/F C/F BLNF21J27C7A

C/F C/F C/F C/F C/F C/F C/F C/F

240 6.0 3 12 (305) 14 (7) 240 7.5 3 14 1 / 2 (368) 15 (7) 240 9.0 3 17 (432) 16 (8) 240 12.0 3 21 1 / 2 (546) 18 (9)

Elements (7 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. 5 No third party recognition 8 Can be wired for 1-phase operation

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

176