DF228S THERMTROL [Thermtrol Corporation], DF228S Datasheet - Page 2

• Manufacturer Part Number: DF228S
• Description: DF SERIES 15 AMP THERMAL CUTOFFS
• Manufacturer: THERMTROL [Thermtrol Corporation]

Precautions When Using
Thermal Cutoffs
using thermal cutoffs to insure proper and safe performance. To
achieve the full use and capacity of a thermal cutoff, it is necessary
for the customer to exercise proper storage and execute appropriate
circuit design, proper installation, and adequate testing. Thermtrol
Corporation does not assume responsibility for problems which occur
as a result of improper storage and installation, or inappropriate
circuit design, evaluations or tests.
•
intended. Thermal cutoffs operate only when they sense an ambient
temperature greater than the factory pre-set temperature. They have
no ability to function by current overload and are not current
limiting devices.
•
intended to be used in the aerospace industry, aviation, nuclear
power generation systems, life support systems, engine control
systems, or safety control systems for transportation. Thermal cutoffs
are applicable for electrical household devices, appliances and
electronics. Other applications include: office automation equipment,
audiovisual equipment, communication systems, measuring instru-
ments and specific transportation systems.
•
ratings in the specification chart.
•
such as sulfurous gas, or in a high humidity environment.
•
application and determine the proper mounting position and/or
method. To judge whether the selected thermal cutoff and chosen
position and method of mounting is suitable for the final application,
we recommend that the customer fully test and evaluate the unit in an
environment that duplicates the final application as closely as
possible. This includes mounting and securing the thermal cutoff
identically to the method that will be used in production.
UL/ CUL: E117626
VDE: 115369, *116219
Do not use thermal cutoffs for purposes other than for what they are
Do not use thermal cutoffs in a liquid, in a corrosive atmosphere
Do not use thermal cutoffs in equipment, appliances or devices
Do not use thermal cutoffs in applications exceeding the listed
DF100S
DF104S
DF110S
DF119S
DF128S
DF139S
DF141S
DF144S
DF152S
DF170S
DF184S
DF192S
DF198S
DF216S
DF228S
DF240S
Customers shall choose the thermal cutoff appropriate for the
Number
DF66S
DF72S
DF77S
DF84S
DF91S
DF98S
Part
The following information describes the correct methods of
Electrical Ratings and Selected Agency Approvals
Temperature (°C) TH TM 15 Amp/125Vac 15 Amp/125Vac 10 Amp/250Vac
Tol: +0°C/-4°C
Functioning
100
104
110
119
128
139
141
144
152
170
184
192
198
216
228
240
66
72
77
84
91
98
(°C) (°C) 10 Amp/250Vac 10 Amp/250Vac
106 155
117 170
117 171
120 240
128 175
146 190
160 214
167 210
170 244
186 241
193 248
200 260
42 130
50 110
55 130
60 114
67 121
76 130
78 135
80 150
88 140
95 170
Approved
c
Pending
*
*
*
*
*
*
*
*
Handling and Installation
Instructions
When using thermal cutoffs, considerable caution should be exer-
cised as follows:
A. Installation
•
heat is sustained over the body of the unit.
•
sure to heat.
•
external mechanical force will be applied to the body and/or leads of
the thermal cutoff.
•
B. Lead Bending
•
body of the thermal cutoff.
•
•
C. Soldering
NOTE: The special sealant joining the lead wires to the case will
soften during soldering. Care must be taken to not move the leads
or body during the soldering process as the softened joints could
shift and become disconnected. The sealant will resume its initial
strength after cooling.
•
body when soldering.
•
•
•
free of any push, pull or twist force.
•
seconds minimum without moving it.
Maximum soldering time at solder bath
temperature of 300°C
Terminology:
Functioning Temperature (TF)
The temperature at which a thermal cutoff changes its state of
conductivity to open a circuit with detection current of 10mA or less
as the only load. The temperature tolerance for the UL and CSA
standard is +0°C / -10°C.
Holding Temperature (TH)
The maximum temperature at which a thermal cutoff can be main-
tained while conducting rated current for 168 hrs. without functioning.
Maximum Temperature (TM)
The maximum temperature at which mechanical and electrical prop-
erties of a thermal cutoff can be maintained for 10 minutes without
resuming conductivity after functioning.
Opening Temp. Max. Soldering Time
Take caution not to damage either the thermal cutoff body or the lead.
Allow adequate space for mounting the thermal cutoff.
Keep the thermal cutoff body free from any push, pull or twist force.
Maximum soldering time is shown in table above.
Solder 20 mm minimum from the thermal cutoff body.
During soldering, both the thermal cutoff body and leads should be
Keep the leads as long as possible to maximize the area of expo-
When bending a lead, bend at a location 5mm minimum from the
Under 120° C
Mount the thermal cutoff in a location where uniform radiation of
Minimize the conduction of excessive heat to the thermal cutoff
Place and connect the thermal cutoff in a manner so that no
Over 120° C
After soldering, allow the thermal cutoff to cool for 30
2 seconds
3 seconds
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