Watlow Heater Catalog

Thermostats and Accessories

Bulb and Capillary Technical Information (Continued)

Thermostats

Control Mode

Temperature

Ampacity @ Line Voltage

Bulb

Bulb

Capillary

Terminal Part Est. Net

Type

Range

Differential

Diameter

Length

Length

Type

No.

Wt.

°F

(°C)

˚F (˚C) 120 240 277 480 in. (mm)

in. (mm)

in. (mm)

lbs (kg)

0.250 (6) 3 1 / 2 0.250 (6) 3 1 / 4 0.250 (6) 2 3 / 4 0.250 (6) 2 3 / 4

2 1 (0.4) 2A 1 (0.4) 3 1 (0.4) 3A 1 (0.4) 12A 1 (0.4) 4 2 (0.9) 5A 2 (0.9) 7A 2 (0.9)

On-off Temp Control

Single- 30-250

(0-120) 13 (7) 25 25 22 — (0-120) 13 (7) 25 25 22 —

(89) (85) (70) (70)

18

(455) #12 AWG

Pole

30-250

84 (2135) Stranded

Single- 175-550 (80-290) 23 (13) 25 25 22 — Throw 175-550 (80-290) 23 (13) 25 25 22 —

18

(455) Leads or

84 (2135)

#8-32

(SPST)

screw lug

0.250 (6) 4 3 / 8 (110) 0.375 (10) 6 9 / 16 (167) 0.250 (6) 6 1 / 2 (165) 0.250 (6) 7 1 / 16 (179)

60-160

(15-70) 19 (10) 30 30 30 20 (0-40) 12 (7) 30 30 30 10

14 36

(355) (915)

#8-32

On-off Temp

Double- 30-110

Pole

60-250 (15-120) 12 (7) 30 30 30 10

48 (1220) Screw Lug

Control Single- 100-550 (40-290) 22 (12) 30 30 30 10

48 (1220)

Throw (DPST)

(SPST) 350 ⑨

0.250 (6) 3 1 / 2

11 1 (0.4)

On-off

(180) —

30 30 20 —

(90)

36

(915) #10-32

with

Screw Lug

Manual Reset

Note: All thermostats certified by UL ® and/or CSA for use in the United States and Canada. ⑨ Fixed temperature rating

512