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（2）額定電流
斷路器的額定電流與過電流脫扣器的額定電流應大于線路計算負荷電流。當按線路的計算電流選擇時，應能滿足下式：
（4-10-6）
式中 ——低壓斷路器的額定電流，A；
——線路的計算電流或實際電流，A。
如果環(huán)境溫度低于+40℃，則電器產品溫度每低1℃，允許電流比額定電流值增加0.5%。但增加總數(shù)不得超過20％。
10.5 低壓斷路器
斷路器的保護定值
（1）長延時脫扣器的電流整定值，動作時間可以不小于10s；長延時脫扣器只能作過載保護。
（2）短延時脫扣器的電流整定值，動作時間約為0.1～0.4s；短延時脫扣器可以作短路保護，也可以作過載保護。
（3）瞬時脫扣器的電流整定值，其動作時間約為0.02s。瞬時脫扣器一般用作短路保護。
10.5 低壓斷路器
（3）瞬時過電流脫扣器的整定電流
瞬時脫扣器的動作時間為0.02s左右。
瞬時或短時過電流脫扣器的整定電流應能躲開線路的尖峰電流。
1）負載是單臺電動機，整定電流按下式計算
（4-10-7）
ADEPT TECH 10330-11351 USPP 1033011351
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194E-AA20E-P11-PE
APW MCLEAN T-EG6 NSPP TEG6
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IDEC APW246-R NSFP APW246R
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Xtera Meriton 900-0135-01 3300 PS-200-1 115/230 VAC REDUNDANT POWER SUP APW
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IDEC APW226D-G NSPP APW226DG
USED APW / WYOTT CW-3A COMMERCIAL LARGE SINGLE COMPARTMENT FOOD WARMER
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IDEC APW1126-W NSPP APW1126W
APW International NI8134A Axle Shaft New Right
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APW ELECTRONIC SOLUTIONS 88-34 USPP 8834
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194E-AA20E-P11-PE
ACUITY IMAGING CM4000 USPP CM4000
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RVSI Acuity Imaging 070-200200 045-200400
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ACUITY (RVSI) DMR600 DMR 600 ROBOT DATA MATRIX READER MODULE
RVSI Acuity AS-CLRS-017 Camera Assembly Hitachi NIB
RVSI AS-MS20 Acuity IVS Series Camera Controller
RVSI ACUITY CIMATRIX SCANSTAR 10 USPP SCANSTAR10
RVSI Acuity IVS Series Installed SR20 Symbology Reader
PROPAQ ENCORE 202 EL PATIENT VITAL MONITOR WITH NETWORK ACUITY MODEM
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NIB Acuity Camera CM4000_CM4OOO
LAMP LIGHT BULB: ACUITY A09501
LAMP LIGHT BULB: ACUITY ULTRALIFE 013845
LAMP LIGHT BULB: ACUITY A09502
Acuity Imaging Inc. 070-200000 070200000 REV B
ACUITY RVSI IVS SERIES CAMERA CONTROLLER 080-194300 080194300REV C
Acuity AS-CLRS-017 Camera W/ Fuji Lens 201573
NIB ACUITY CM4000 B/W CCD MINIATURE CAMERA
RVSI Citmatrix Vision Camera CM4000 Acuity Imaging #36177
RVSI ACUITY VXI SYMBOLOGY READER SR20 w/ E1403B ADAPTER
ACUITY IMAGING 604406 USPP 604406
ACUITY IMAGING 002-MS10X2 USPP 002MS10X2
MENTOR O&O B-VAT II / 2 PROCESSOR MODULE 22-4810 VIDEO ACUITY TESTER
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Acuity PC Board LG-3,
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1 NEW RVSI ACUITY CIMATRIX SCANSTAR 10 O4-2
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194E-AA20E-P11-PE
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