G4A01144C Datasheet, PDF (6/22 Pages) List of Unclassifed Manufacturers – MICROTEMP Thermal Cutoffs INTRODUCTION

Lead Configurations
The MICROTEMP^® TCO can be furnished with virtually any lead configuration specified for an
application. Lead curls are available to match most sizes of screws along with varying lead lengths
and lead forms.
All types of terminations, such as quick connects, ring terminals and blade terminals, are available
at additional cost. In addition, tape and reel packaging can be specified to meet high volume
requirements.
Temperature Ratings
MICROTEMP^® thermal cutoffs are available in a wide range of opening temperatures, providing
designers a high degree of flexibility (see figure 3). Determining the correct TCO temperature
calibration requires significant application testing.
The proper calibration will be affected by application variables such as I²R self heating of the TCO,
heat transfer through insulation and heat dissipation due to heat sinking and air flow.
Thermocoupled “dummy” TCOs, that match the physical and electrical characteristics of a
functional TCO, are available to help evaluate application specific variables.
For more information on testing and installing MICROTEMP^® TCOs, please review the
MICROTEMP^® thermal cutoff technical information section beginning on page 143.
Direct Current (DC) Applications
MICROTEMP^® thermal cutoffs do not have published electrical ratings for direct current (DC)
applications. Current interruption capacity in DC circuits is highly application sensitive.
Therm-O-Disc recommends thorough testing of DC electrical applications using the testing
guidelines in Therm-O-Disc’s MICROTEMP^® thermal cutoff technical information section.
Samples and Quotations
MICROTEMP^® TCO samples and thermocoupled “dummies” are readily available for determining
the correct response and desired performance in an application. For more information on
MICROTEMP^® TCOs, call a Therm-O-Disc sales engineer at 419-525-8300.
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