MIL-DTL-17361G(SH)
APPENDIX A
e. There are two frame sizes for each design. One frame size covers the CCS range of 10 amps to 25 amps
and the other frame size covers the CCS range of 40 amps to 100 amps. Each frame size has a CCS dial with
available settings in the applicable ranges. Care should be taken to ensure that the correct frame size/CCS range is
selected for a particular application.
f. For some applications, fuse units are used in conjunction with the circuit breaker. The fuse unit is a
separate piece that mounts below the circuit breaker on a common mounting base/block; it plugs into the mounting
base/block but does not plug into the circuit breaker.
A.3.2.1.3 Form, fit, and function replacement considerations (circuit breakers from same vendor).
A.3.2.1.3.1 SPD. All three AQB-A102 designs are form and fit replacements for the SPD AQB-A101.
Attachments (if applicable) and adjustable settings must be taken into consideration to make the electronic designs
functionally equivalent to the thermal magnetic design. See A.3.2.1.5 for attachment information. See A.3.8 and
Tables A-VI and A-VII for guidance on how to set the SPD AQB-A102 designs to make them functional
replacements for the SPD AQB-A101 (60 Hz and 400 Hz AC ratings only) with respect to CCS and overcurrent
protection.
A.3.2.1.3.2 Cutler-Hammer. Both AQB-A103 designs are form and fit replacements for the Cutler-Hammer
AQB-A101. Attachments (if applicable) and adjustable settings must be taken into consideration to make the
electronic designs functionally equivalent to the thermal magnetic design. See A.3.2.1.5 for attachment information.
See A.3.8 and Tables A-VIII and A-IX for guidance on how to set the Cutler-Hammer AQB-A103 designs to make
them functional replacements for the Cutler-Hammer AQB-A101 (60 Hz and 400 Hz AC ratings only) with respect
to CCS and overcurrent protection.
A.3.2.1.4 Form, fit, and function replacement considerations (circuit breakers from different vendors). Note
the following:
a. The Cutler-Hammer AQB-A101 is a form and fit replacement for the SPD AQB-A101. To make the
Cutler-Hammer AQB-A101 a functional replacement for the SPD AQB-A101, the trip unit amp ratings and, if
applicable, type of attachments and attachment ratings must be the same.
b. All three SPD AQB-A102 designs are form and fit replacements for the Cutler-Hammer AQB-A101.
Attachments (if applicable) and adjustable settings must be taken into consideration to make them functional
equivalents. See A.3.2.1.5 for attachment information. See A.3.8 and Tables A-VI and VII for guidance on how to
set the SPD electronic designs to make them functional replacements for the Cutler-Hammer AQB-A101 (60 Hz and
400 Hz AC ratings only) with respect to CCS and overcurrent protection.
c. Both Cutler-Hammer AQB-A103 designs are form and fit replacements for the SPD AQB-A101.
Attachments (if applicable) and adjustable settings must be taken into consideration to make them functional
equivalents. See A.3.2.1.5 for attachment information. See A.3.8 and Tables A-VIII and IX for guidance on how to
set the Cutler-Hammer electronic designs to make them functional replacements for the SPD AQB-A101 (60 Hz and
400 Hz AC ratings only) with respect to CCS and overcurrent protection.
A.3.2.1.5 Attachments. Attachments include shunt trips and auxiliary switches. Important aspects of
attachments are ratings and number and type of leads exiting the circuit breaker. These aspects can differ depending
on which type of circuit breaker is involved. See A.3.2.1.5.1, A.3.2.1.5.2, A.3.7, and Table A-I for more
information on attachments.
A.3.2.1.5.1 Shunt trip leads for SPD AQB-A102. Note the following:
a.
For Type E circuit breakers, there were two leads exiting the circuit breaker for any installed shunt trip.
b. For Type E1 and Type E2 circuit breakers made before November 04 and with serial number of less than
642029, there are two leads exiting the circuit breaker for any installed shunt trip.
c. For Type E1 and Type E2 circuit breakers made after November 04 and with serial number of 642029 or
greater, there are three leads exiting the circuit breaker for any installed shunt trip.
d. SPD realized that with only two shunt trip leads, the 450VAC, 60Hz rated shunt trip may not always
operate properly. They added the third lead to ensure that all shunt trip ratings operate properly. Only two leads are
used for any rating. Wiring instructions come with AQB-A102 circuit breakers that tell the user which specific
leads are applicable to the shunt trip rating desired and how to handle the unused lead.
50
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business