PRODUCT SELECTION
A P P L I C AT I O N S
To select the correct polymeric circuit
The benefits of polymeric Resettable Overcurrent
Protectors are being recognized by more and more
design engineers, and new applications are being
discovered every day.
protection device, complete the information listed below
for the application, and then refer to the resettable
overcurrent protector data sheets.
The use of polymeric types of devices have been widely
accepted in the following applications and industries:
¥ Personal computers
1. Determine the normal operating current:
______ amps
¥ Laptop computers
2. Determine the maximum circuit voltage
¥ Personal digital assistants
¥ Transformers
(V
): ______ volts
max
3. Determine the fault current (I
______ amps
):
max
¥ Small and medium electric motors
¥ Audio equipment and speakers
¥ Test and measurement equipment
¥ Security and fire alarm systems
¥ Medical electronics
4. Determine the operating temperature range:
Minimum Temperature: ______ ¡C
Maximum Temperature: ______ ¡C
5. Select a product family so that the maximum
rating for V
and I is higher than the maximum
max
max
circuit voltage and fault current in the application.
6. Using the I vs. Temperature Table on the product
¥ Personal care products
¥ Point-of-sale equipment
¥ Industrial controls
hold
family data sheet, select the polymeric device at the
maximum operating temperature with an I greater
hold
than or equal to the normal operating current.
¥ Automotive electronics and harness protection
¥ Marine electronics
7. Verify that the selected device will trip under fault
conditions by checking in the I table that the fault
trip
for the selected device, at
the lowest operating temperature.
current is greater than I
¥ Battery-operated toys
trip
SchurterÕs resettable fuses cross to many like products already on the
market. See our online cross list at www.schurterinc.com/cross.htm.
8. Order samples and test in application.
Schurter, Inc. ¥ Phone 707-778-6311 ¥ Fax 707-778-6401 ¥ E-mail info@schurter.com ¥ Website http://www.schurter.com
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ETC [ ETC ]
