MIL-PRF-55629E
3.5.13 Continuous current carrying capacity. Circuit breakers shall be capable of carrying the rated current as
specified (see 3.1).
3.5.14 Circuit diagram. The circuit diagram shall be as specified (see 3.1).
3.6 Solderability (applicable to solder terminals). When circuit breakers are tested as specified in 4.8.2, 95 percent
of the total length of fillet, which is between the standard wrap wire and the terminal, shall be tangent to the surface of
the terminal being tested. There shall be no pinholes, voids, etc. A ragged or interrupted line at the point of tangency
between the fillet and the terminal under test shall be considered a defect. After the test, there shall be no evidence
of fracture, loosening of parts, or any other mechanical failure of the circuit breakers. A movement of the terminals
within the confines of the terminal-anchoring device will be permitted provided continuity of electrical contact is not
impaired. When any movement of the terminal is noted, the dielectric withstanding voltage shall be as specified in
3.7.
3.7 Dielectric withstanding voltage. When circuit breakers are tested as specified in 4.8.3, the leakage current
shall not exceed 500 microamperes with the exception of 1 mA after 1 hour following the moisture resistance test.
There shall be no evidence of flashover, mechanical damage, arcing, or breakdown.
3.8 Insulation resistance. When circuit breakers are tested as specified in 4.8.4, the insulation resistance shall be
not less than 100 megohms.
3.9 Calibration. When circuit breakers are tested as specified in 4.8.5, the tripping time (see 6.6.6) shall not
exceed the limits as specified (see 3.1). Circuit breakers shall also trip within these specified limits when subjected to
the trip-free calibration test (see 4.8.16). In multipole circuit breakers, all poles shall trip upon application of overload
on any pole or combination of poles. Circuit breakers tested for high inrush (see 3.1) shall not trip during the high-
inrush test. Circuit breakers requiring the voltage trip test shall trip within 30 milliseconds after application of each
specified voltage (see 3.1).
3.10 Resistance or impedance. When circuit breakers are tested as specified in 4.8.6, the main series resistance
or impedance shall not exceed the maximum values specified (see 3.1), except after endurance and interrupting
capacity. The variation after these tests shall be within plus 10 percent or 0.1 ohm, whichever is greater, than the
specified values (see 3.1). The auxiliary contact resistance shall not exceed 0.050 ohm initially or 0.10 ohm after
endurance.
3.11 Actuator (see 4.8.7).
3.11.1 Actuator strength. When circuit breakers are tested as specified in 4.8.7.1, there shall be no evidence of
mechanical damage after the specified load (see 3.1) is applied to the actuator lever or pushbutton.
3.11.2 Actuator operating force. When circuit breakers are tested as specified in 4.8.7.2, the applied force
necessary to operate the lever in either direction shall not exceed the value specified (see 3.1).
3.12 High-temperature and low-temperature operation. When circuit breakers are tested as specified in 4.8.8,
there shall be no evidence of mechanical damage and tripping time shall not exceed the extreme temperature limits
specified (see 3.1), and when applicable, the auxiliary contacts shall operate as specified in 3.5.8.2. Circuit breakers
shall also meet the following requirements when tested under the conditions specified in 4.8.8:
a.
Dielectric withstanding voltage (see 3.7).
Insulation resistance (see 3.8).
b.
3.13 Endurance. When circuit breakers are tested as specified in 4.8.9, there shall be no failure and no evidence
of mechanical damage or loosening of parts. Circuit breakers shall also meet the following requirements:
a.
Dielectric withstanding voltage (see 3.7).
b.
Insulation resistance (see 3.8).
c.
Calibration (see 3.9).
d.
Resistance or impedance (see 3.10).
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