- AP (fully sealed magnetic circuit breaker)
- 12 Hook terminals
- 65 50/60Hz high pulse, long time delay (50/60Hz only)
- F additional internal delay
- 103 10 amp
note to me: computer hutch yellow bin 1
AP SERIES
HYDRAULIC MAGNETIC CIRCUIT PROTECTORS
Introduction
The Airpax™ AP series are fully sealed, magnetic circuit protectors that combine power switching and accurate, reliable circuit protection with inverse
time delays and trip free features.
Unlike a thermal circuit protector, the AP does not change its trip current over a wide temperature span. In addition, the AP magnetic circuit protector
is available in either DC, 50/60Hz or 400Hz versions and with various delays to match the protector to specific application requirements.
One of the most important features of this protector is the “trip
free” action, which means the circuit will not remain closed in the
presence of an overload even though the handle is held in the ON
position. The delay mechanism senses the fault and the contacts open.
Waterproof panel integrity is provided by an “O” ring bushing seal
and a silicon rubber gland within the bushing/handle assembly. Salt
spray testing per MIL-STD-202, Method 101, Test Condition B, with no
evidence of corrosion, electrical or mechanical damage.
Typical applications include communication, navigation and aircraft
instrumentation, radar and power supplies.
The Airpax™ UP circuit protector, with UL recognition and CSA
certification, is essentially the same as the AP in construction and
operating principle. It is approved for operation at 50 volts DC to 20
amperes, 120 volts 50/60Hz to 15 amperes and 240 volts 50/60Hz to 7.5
amperes.
The UP series offers an optional FM approval (Factory Mutual
Research), provided for petrochemical applications. FM approval is
available for single pole, series trip, UP type units only. The UP circuit
protector also offers an optional ATEX certification for use in explosive
environments.
The Airpax™ AP-MIL protectors are produced in accordance with MIL PRF-39019 and the pertinent specification sheets, are subjected to
an exacting production and test program to maintain their Qualified
Products Listing (QPL). One, two and three pole series trip units, with
or without auxiliary contacts, have been accepted for this listing. Refer
to specification sheets MIL-PRF-39019/1 through 6 for the application
government designations. The AIRPAX cage code number is 82647.
Two Pole, AP12
Two of the basic units are combined in a sealed case to provide protection for dual circuit. A single toggle handle actuates both internal trip
mechanisms. Conversely, an overload in either circuit trips both simultaneously. The AP12 consists of two independent series trip protectors, each available with its own rating and delay characteristics.
One frequent use of two pole protectors is to interrupt either or both sides of a power line. Likewise, three pole protectors often use three identical
coils. However, any two or three pole protectors may have any coil of any delay in any desired combination. (Unless otherwise specified, we assume
the two or three poles to be all alike.)
Inrush Pulse Tolerance
The following table provides a comparison of inrush pulse tolerance with
and without the inertial delay feature for each of the 50/60Hz delays.
Pulse tolerance is defined as a single pulse of half sine wave peak current
amplitude of 8 milli-seconds duration that will not trip the circuit protector
TYPICAL DELAY CURVES
The delay curves below illustrate our standard instant, short and long delays.
Please consult factory for specific delay curves or refer to table on page 87.
Delay curves 64 and 65 illustrate the improved inrush tolerance provided
compared to standard delays. Not available in MIL configurations.
All trip times and trip currents are specified with the breaker mounted
in the normal vertical position at ambient temperature of 25°C. For time
delay test and measurement purposes, the breakers should not carry
current prior to application of overload.
