MIL-DTL-17361G(SH)
APPENDIX A
TABLE A-XI. AQB-LF250 / AQB-L253 conversion settings - Continued.
AQB-LF250 settings (SPD or
Cutler-Hammer AQB-L253 equivalent settings /2
Cutler-Hammer/Westinghouse)
Continuous
Trip
Instantaneous
Frame
Short-time delay
Short-time delay
current setting on
element
pickup (amps)
size
pickup (amps)
time band /3
adjustable rating
plug (amps)
150LM
4 (2325)
250
150
13 (1950)
INST
150LM
High (3000)
NA
NA
NA
NA
175LM
Low (1500)
250
175
8 (1400)
INST
175LM
2 (1770)
250
175
10 (1750)
INST
175LM
3 (2025)
250
175
12 (2100)
INST
175LM
4 (2325)
250
175
13 (2275)
INST
175LM
High (3000)
NA
NA
NA
NA
225LM
Low (1500)
250
225
6 (1350)
INST
225LM
2 (1770)
250
225
8 (1800)
INST
225LM
3 (2025)
250
225
10 (2250)
INST
225LM
4 (2325)
250
225
12 (2700)
INST
225LM
High (3000)
250
225
13 (2925)
INST
250LM
Low (1500)
250
250
6 (1500)
INST
250LM
2 (1770)
250
250
8 (2000)
INST
250LM
3 (2025)
250
250
8 (2000)
INST
250LM
4 (2325)
250
250
10 (2500)
INST
250LM
High (3000)
250
250
12 (3000)
INST
NOTES:
/1 See MIL-DTL-17361/7 for complete details on available settings.
/2 "NA" stands for "Not Applicable". When used in the table, it means that the AQB-L253 cannot be considered
as a replacement for the AQB-LF250 in a particular application because available settings of the AQB-L253
do not match the AQB-LF250 setting within ±20%.
/3 "INST" setting emulates an instantaneous function.
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