
The Thermal DF Series Thermal Cutoffs are single action devices that open when
a preset temperature is reached. They do not reset. The active component of a ther-
mal cutoff is an electrically insulated thermal pellet. This pellet holds a spring loaded
contact against a fixed contact under normal operating temperatures. (See Fig. 1)
When the preset temperature of the cutoff is reached, the pellet liquifies, the springs
relax, and the spring loaded contact is moved away from the fixed contact, opening the
circuit. (See Fig. 2) The DF Series is the right choice for applications requiring an inex-
pensive limit protector with 15A capability.
(Fig. 1) CLOSED
(Fig. 2) OPEN
B
E
C
D
A
FEATURES
Various temperature settings
Miniature size
Current rating: 15 Amp/125
Vac, 10 Amp/250 Vac
Economical
Accurate
Large inventory; same day
shipping
Various mounting options
APPLICATIONS
Thermal cutoffs are widely
used to prevent damage
from overheating in electrical
products
APPLIANCES - space
heaters, irons, stoves,
electric blankets, hair
dryers, clothes dryers,
cookers, toaster ovens,
crock pots, mixers, toasters,
microwave ovens, etc.
MOTORS - air conditioners,
copiers, fans, washing
machines, compressors,
etc.
ELECTRONICS - TVs,
stereos, tape recorders,
video recorders, fluorescent
lamps, transformers,
computers, surge suppres-
sors, telecommunication
equipment, etc.
www.thermtrol.com
E-mail: sales@thermtrol.com
8914 Pleasantwood Ave., N.W. P.O. Box 2501 North Canton, OH 44720 (330) 497-4148 Fax (330) 497-4189
DF Series
Standard Dimensions (mm)
B
C
10.5±0.5
35±1
A
D
E
25.4±1
1±0.05
4.0±0.1
Custom lead lengths are available.