Pallet Thermal Fuse 10A 250V provides protection for your electrical appliances by interrupting the circuit if the operating temperature is exceeded. The fuse features rigid connections and is suitable for surface or panel mounting applications.The following is about Pallet Thermal Fuse 10A related, I hope to help you better understand Pallet Thermal Fuse 10A.The following is about TCO Axial Leaded Pallet Thermal Fuse related, I hope to help you better understand TCO Axial Leaded Pallet Thermal Fuse.
TCO Axial Leaded Pallet Thermal Fuse
TCO Thermal Cutoffs Fuse Axial Leaded BF Pallet Thermal Fuse 10A 250V 73 to 257 Degree
Pallet Thermal Fuse 10A 250V provides protection for your electrical appliances by interrupting the circuit if the operating temperature is exceeded. The fuse features rigid connections and is suitable for surface or panel mounting applications.
Description Of TCO Axial Leaded Pallet Thermal Fuse
Metal thermal fuse (thermal cut off, temperature fuse) which use heat sensitive
grain materials (organic chemical) as heat sensitive material.
Function is to cut off the circuit of appliances when temperature exceed specified TF value because of unexpected fault.
Widely used in electric current provider, power switch, computer, telephone, home appliance, communication products, all kinds of instrument and electronic and electric components, motor and all kinds of small home appliance such as electric iron, thermoelectric blower, microwave oven, refrigerator etc as heat protection, etc.
Features Of TCO Axial Leaded Pallet Thermal Fuse
Axial leaded
Body dimensions: 4 x 11mm (Diameter x Length)
Rigid wire connections
Ratings: 10A 250VAC
Globally certified temperatures and
electrical loads
One-shot operation cuts off electrical power
Low resistance
Compact size
RoHS compliant
Operating Principle Of TCO Axial Leaded Pallet Thermal Fuse
The active trigger mechanism of the thermal fuse is an exclusively formulated,
electrically nonconductive pellet. Under normal operating temperatures, the
solid pellet holds spring loaded contacts closed. When a predetermined
temperature is reached, the pellet melts, allowing the compression spring to
relax. The trip spring then slides the contact away from the lead and the
circuit is opened. After the thermal fuse opens a circuit, the fuse needs to be
replaced. This replacement procedure must include correction of the fault
condition before the product is operated again.
Benefits Of TCO Axial Leaded Pallet Thermal Fuse
• The industry standard for over-temperature protection
• Available in a wide range of temperatures to offer design flexibility in your
application
• Available in mounted and packaged designs
Applications Of TCO Axial Leaded Pallet Thermal Fuse
• Portable Appliance
• Major Appliance
• HVAC
• Power Supplies
• Water Heater
• Other
Dimensional Drawing Of TCO Axial Leaded Pallet Thermal Fuse (mm)
Specification Of TCO Axial Leaded Pallet Thermal Fuse
Model NO. |
Tf (℃) |
Fusing-off Temperature (℃) |
Th (℃) |
Tm(℃) |
Ir(A) |
Ur(V) |
||
IEC |
Corp |
|||||||
BF73 |
73 |
73+0/-10 |
70±2 |
58 |
175 |
10 |
250 |
|
BF77 |
77 |
77+0/-10 |
74±2 |
62 |
175 |
10 |
250 |
|
BF84 |
84 |
84+0/-10 |
82±2 |
69 |
175 |
10 |
250 |
|
BF94 |
94 |
94+0/-10 |
90±2 |
79 |
175 |
10 |
250 |
|
BF99 |
99 |
99+0/-10 |
95±2 |
84 |
175 |
10 |
250 |
|
BF104 |
104 |
104+0/-10 |
101+2/-3 |
90 |
175 |
10 |
250 |
|
BF113 |
113 |
113+0/-10 |
110±2 |
98 |
175 |
10 |
250 |
|
BF117 |
117 |
117+0/-10 |
114±2 |
102 |
175 |
10 |
250 |
|
BF121 |
121 |
121+0/-10 |
118±2 |
106 |
175 |
10 |
250 |
|
BF133 |
133 |
133+0/-10 |
131+2/-3 |
119 |
215 |
10 |
250 |
|
BF142 |
142 |
142+0/-10 |
138+2/-3 |
127 |
215 |
10 |
250 |
|
BF157 |
157 |
157+0/-10 |
154+2/-3 |
142 |
250 |
10 |
250 |
|
BF172 |
172 |
172+0/-10 |
169+2/-3 |
157 |
260 |
10 |
250 |
|
BF184 |
184 |
184+0/-10 |
181±2 |
169 |
260 |
10 |
250 |
|
BF192 |
192 |
192+0/-10 |
189±2 |
177 |
390 |
10 |
250 |
|
BF216 |
216 |
216+0/-10 |
212±2 |
191 |
380 |
10 |
250 |
|
BF229 |
229 |
229+0/-10 |
226±2 |
201 |
390 |
10 |
250 |
|
BF240 |
240 |
240+0/-10 |
236±2 |
201 |
450 |
10 |
250 |
|
BF257 |
257 |
257+0/-10 |
254±2 |
200 |
450 |
10 |
250 |
Agency Approvals Of TCO Axial Leaded Pallet Thermal Fuse
Model No. |
UL/CUL |
VDE |
CCC |
PSE |
KTL |
BF73 |
E140847 |
40005418 |
2003010205052188 |
JET0749-32001-1007 |
SU05017-11001 |
BF77 |
JET0749-32001-1007 |
SU05017-11001 |
|||
BF84 |
JET0749-32001-1008 |
SU05017-11001 |
|||
BF94 |
JET0749-32001-1008 |
SU05017-11001 |
|||
BF99 |
JET0749-32001-1008 |
SU05017-11001 |
|||
BF104 |
JET0749-32001-1009 |
SU05017-11002 |
|||
BF113 |
JET0749-32001-1009 |
SU05017-11002 |
|||
BF117 |
JET0749-32001-1009 |
SU05017-11002 |
|||
BF121 |
JET0749-32001-1010 |
SU05017-11003 |
|||
BF133 |
JET0749-32001-1010 |
SU05017-11003 |
|||
BF142 |
JET0749-32001-1011 |
SU05017-11003 |
|||
BF157 |
JET0749-32001-1011 |
SU05017-11003 |
|||
BF172 |
JET0749-32001-1012 |
SU05017-11004 |
|||
BF184 |
JET0749-32001-1013 |
SU05017-11004 |
|||
BF192 |
JET0749-32001-1013 |
SU05017-11004 |
|||
BF216 |
JET0749-32001-1014 |
SU05017-11005 |
|||
BF240 |
JET0749-32001-1015 |
SU05017-11005 |
|||
BF257 |
○ |
○ |
○ |
○ |
○ pending
Application of Thermal FusesTCO Axial Leaded Pallet Thermal Fuse
Thermal cutoffs, available in a variety of standard and custom configurations,
provide reliable one-shot, over-temperature protection in a wide range of
applications. Performance can be affected by installation method and location
of the thermal cutoff. Both application and installation is important in the
overall performance of the product, and thorough testing is necessary for both
AC and DC applications. The following guidelines will answer most questions
concerning these two subjects.
General Considerations
Location
Sufficient time and effort must be used to determine the proper and most
desirable location for a thermal fuse. The employment of infrared thermography,
or a sufficient number of thermocouples to identify the highest temperature
areas in the application during normal operation and fault conditions, should
be considered. The location that provides the largest differential between
these two conditions is generally most desirable.
Calibration Temperature
It is necessary to select a thermal fuse rating above the maximum temperature
experienced by the thermal fuse during normal operation, including expected
short-term temperature overshoots. The temperatures experienced by the thermal
fuse during normal operation will determine the life expectancy of the thermal
fuse. If the thermal fuse rating is too close to the temperature experienced
during normal operation (including overshoot temperature after opening of a
thermostat, etc.), the probability of a nuisance trip increases. Nuisance trips
are caused by pellet shrinkage due to repeated operation at temperatures near
but below calibration temperature, or excessive thermal gradients across the
case of the TCO and its leads (see Thermal Gradients). The design engineer must
make the decision between response and life of the TCO based on product
requirements. It is important to remember that temperatures experienced in
actual application will vary from unit to unit.
Thermal Gradients
Ideal thermal fuse placement subjects the entire thermal fuse case, leads,
epoxy seal and internal components to a uniform temperature environment. Care
should be exercised in the placement of the thermal fuse to minimize thermal
gradients across the thermal fuse body. In certain applications, the thermal
fuse can be mounted in a position where heat is conducted to the body of the
thermal fuse through one of the leads, resulting in thermal gradients across
the thermal fuse. Over time, the thermal fuse life can be reduced by thermal
gradients if the isolated (epoxy) lead is at a consistently lower temperature
than the Application of Thermal Fuses 17 case lead. Long term testing is
recommended in determining whether these conditions exist in the application.
To minimize the effects of thermal gradients and the temperature increase of
the TCO body from this heat fl ow, attach the isolated (epoxy) lead, rather
than the case lead, to the heat source. Thermocoupled fuses can be supplied
with the thermocouples on both ends to facilitate gradient evaluations.
Temperature Limits
The temperatures experienced during normal operation, including expected
temperature overshoots, will determine the life expectancy of the thermal fuse.
Nuisance trips can results if the thermal fuse rating is too close to the
temperatures experienced during normal operation. Thermal fuses of any
temperature rating should not be subjected to continuous normal temperatures in
excess of 200°C. Additionally, overshoot temperatures after the opening of the
thermal fuse should be minimized to avoid possible dielectric breakdown and
reconduction of the thermal fuse.
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