CH140
CH140
CH140
断路器的分断能力是指该断路器安全切断故障电流的能力. 分为极限分断能力Icu和运行分断能力Ics 现在可以做到Icu=Ics即100% 以前是Ics小于Icu 简单说就是断路器能够切断的最大的短路电流,如果电流值超过分段能力则断路器不起作用,导致严重后果。 分断能力的计算方法一般就是(变压器的容量/电压)/变压器出口到断路器上口部分的电阻,所得到的就是电路发生金属性短路的短路电流,断路器的分断能力要大于这个值保证安全 额定短路分断能力Icn:在规定条件下,断路器能保证正常开断的最大短路电流。 额定极限短路分断能力Icu:在规定的使用和性能条件下,开关在闭合位置所能耐受的额定短时耐受电流第一个大半波的峰值电流。 额定运行短路分断能力Ics:在额定电压以及规定使用和性能条件下,开关能保证正常关合的最电大短路峰值电流。 额定短时耐受电流Icw:在规定的使用和性能条件下,在确定的短时间内,开关在闭合位置所能承载的规定电流有效值。 塑壳断路器分断能力的选择,取决于安装地点的短路电流值,要求断路器的分断能力应当大于安装地点的短路电流值,与所带负荷的大小关系不大。请计算安装点的短路电流水平(KA),然后选择断路器; 如果实在不会计算,此断路器如果安装在发电厂等大电力容量的地方,可以选择50KA,比较保险。如果一般工业,选择用25-35KA也可以了。 不是的。 分断能力与短路保护动作值完全是两个概念。 分断能力是指这个断路器可以安全断开电路的最大电流。超过此电流断路器可能发生爆炸、触头熔接而无法断开电路等现象,一般远高于短路动作值。 一般断路器来一下分断电流就报废了。 具体断路器的短路动作值要看相应的型号。一般远小于10000A。 一般在分断试验时,60KA的分断能力,断路器会在电流上升到10-20KA时会断开.一般断开时间在10ms之内(但这个没有具体要求) 正常的短路电流,因各类断路器器不同,短路断开的时间一般也会不同,一般在20-30ms之内
如果,电流上升达到53KA,一般60KA的断路器是受不了的,断路器回损坏的 另外,有些使用环境需要断路器能耐受雷击电流(一般回在80-150KA之间),但因通电时间太短,(为us级),断路器一般不会动作.但有可能对产品产生破坏.
框架电流是断路器选型时的一个重要参数,指断路器的主触头允许通过的最大额定电流。 又称为额定不间断电流。指在规定条件下,电器在长期工作制下,各
部件的温升不超过规定极限值时所承受的电流值。 “框架电流”与“额定电流”不同。 断路器框架电流:断路器可以承受的最大电流。 断路器额定电流:断路器允许长期通过工作电流。 如断路器CM1-100,额定电流有(10),16,25,32,40,50,63,80,100,但其框架电流都为100。
解释 整定电流是继电保护中的一个重要术语。其意思是,在继电保护判断跳闸时与实际电流相对比的标准值,整定值是人为规定,根据电路、电网承受能力计算出的值。 编辑本段举例 整定电流”、“额定电流”是两回事,GB14048中有明确解释,举例说明:DW45断路器三段保护,长延时保护整定电流一般出厂默认值为1倍的额定电流;短路短延时整定电流一般出厂默认值为8倍的额定电流,定时限时间为0.4s;短路瞬时整定电流一般出厂默认值为12倍的额定电流。(其中各项保护电流值用户可根据需求自己设定,若有特殊要求可向制造厂特殊定制。) 额定绝缘电压:绝缘材料额定耐压值,比如电缆就是绝缘皮额定耐压值 额定冲击耐受电压--在耐压试验时,设备绝缘能耐受的操作冲击电压的标准值。 额定接通能力:是峰值耐受电流=2.5X短时耐受电流 是考验断路器关合能力的一个指标,跟着短时耐受电流走的,没啥大意思。 额定短时耐受电流(额定热稳定电流)——在规定的使用和性能条件下,在确定的短时间内,开关在闭合位置所能承载的规定电流有效值。 配电型断路器而言,它有A类和B类之分:A类为非选择型,B类为选择型。所谓选择型是指断路器具有过载长延时、短路短延时和短路瞬时的三段保护特性,反之则只有过载长延时与短路瞬时两种保护特性。而如果是选择脱扣器的类型话,他有B,C,D型之分,就是说B、C、D型是瞬时脱扣器的型式:B型脱
扣电流>3~5In,C型脱扣电流>5~10In,D型脱扣电流>10~50In。用户可根据保护对象的需要,任选它们中的一种。 空气开关和断路器有什么区别啊,为什么我看产品图片外观都是差不多的?谁能解释下,详细点的!谢谢了 空气开关就是断路器的一种,断路器就是能够开断故障电流的开关设备。主要功能是保护设备不受损,保护系统不因为小故障而扩大影响。 空气开关是一种用空气作为绝缘的断路器。常说的空开,指的是小的那种家里用的,一般能开断几个KA电流,也叫微断,微型断路器。 常用的低压断路器,比如塑壳断路器,框架式断路器等等。 除了空气开关,还有用真空做绝缘的,真空断路器,还有用六氟化硫做绝缘的,六氟化硫断路器。一般用在中高压级别。 B类的瞬时脱扣电流是3-5In,适用于电阻性负载;C类的瞬时脱扣电流是5-10In,适用于一般负载;D类的瞬时脱扣电流是10-20In,适用于大电感性负载。
CUTLER HAMMER AN16GNOAB AN16GN0AB NEMA STARTER SIZE 2
CUTLER HAMMER AN16GNOAB AN16GN0AB NEMA STARTER SIZE 2
CUTLER HAMMER AN16GNOA USPP AN16GNOA
CUTLER HAMMER AN16GN0CB USPP AN16GN0CB
CUTLER HAMMER AN16GN0CB NSFP AN16GN0CB
CUTLER HAMMER AN16GN0AB USPP AN16GN0AB
CUTLER HAMMER AN16GN0AB STARTER U2
CUTLER HAMMER AN16GN0AB SIZE 2 NON REVERSING STARTER AN16GNO
CUTLER HAMMER AN16DNODB USPP AN16DNODB
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CUTLER HAMMER AN-16DNOA USPP AN16DNOA
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CUTLER HAMMER AN16DN0EB NSFP AN16DN0EB
CUTLER HAMMER AN16DN0AB SIZE 1 NON REVERSING STARTER AN16DNO
CUTLER HAMMER AN16DN0AB
CUTLER HAMMER AN16DN0AB
CUTLER HAMMER AN16DN0 STARTER SIZE 1 27 AMP SER B1 3 POLE C320KGS6 C306GN3
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CUTLER HAMMER AN16ANO USPP AN16ANO
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CUTLER HAMMER AN11P NSFP AN11P
Cutler Hammer AN 16NNO Size 4 120V Coil Starter No Overload Assembly
Cutler Hammer AN 16NNO Size 4 120V Coil Starter
cutler hammer air force us army relaytype b-4
CUTLER HAMMER AI0CNL0 SERIES A1 STARTER NEMA SIZE 1 3 PHASE
CUTLER HAMMER AI0CNL0 SERIES A STARTER NEMA SIZE 1
CUTLER HAMMER AGSVL120N5 NSFP AGSVL120N5
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CUTLER HAMMER AGSHWCH120N10XS USPP AGSHWCH120N10XS
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CUTLER HAMMER AGSCH120N030040 NSFP AGSCH120N030040
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CUTLER HAMMER AF95AS0C030V
Cutler Hammer AF93AG0C007D Adjustable Drive 75 HP
CUTLER HAMMER AF93AG0C003D DRIVE L21
Cutler Hammer AF93AG0C003D Adjustable Drive 3 HP
Cutler Hammer AF93AG0C002D 2HP AFD - UNIN BOX
CUTLER HAMMER AF91BG0C002D FREQUENCY DRIVE 2 HP
Cutler Hammer AF91AG0CF50D VFD Speed Drive 5HP
CUTLER HAMMER AF91AG0C001D/AF91AGO-C001D DRIVE NIB
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CUTLER HAMMER AE57BN0AFN NSFP AE57BN0AFN
Cutler Hammer AE56LNOA reversing starter size L 110/120V coil 3pole 85amp
CUTLER HAMMER AE56GN0AB NSFP AE56GN0AB
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CUTLER HAMMER AE317RNS3T1 USPP AE317RNS3T1
CUTLER HAMMER AE17ANS0T1FH NSFP AE17ANS0T1FH
CUTLER HAMMER AE16NN0A USPP AE16NN0A
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CUTLER HAMMER AE16HNSOAB NSFP AE16HNSOAB
CUTLER HAMMER AE16HN0BB NSFP AE16HN0BB
CUTLER HAMMER AE16HN0AB USPP AE16HN0AB
CUTLER HAMMER AE16HN0AB NSFP AE16HN0AB
CUTLER HAMMER AE-16GNS0AB USPP AE16GNS0AB
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CUTLER HAMMER AE16ENS0AC
CUTLER HAMMER AE16ENO USPP AE16ENO
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CUTLER HAMMER AE16DNS0 USPP AE16DNS0
CUTLER HAMMER AE16DNOAC MOTOR STARTER N3
CUTLER HAMMER AE16DNOA NSPP AE16DNOA
CUTLER HAMMER AE16DN0AC NSFP AE16DN0AC
CUTLER HAMMER AE16DN0 SIZE H 120 VAC COIL MOTOR STARTER N3
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CUTLER HAMMER AE16BNSO MOTOR STARTER N3
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CUTLER HAMMER AE16ANS0CC NSFP AE16ANS0CC
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Cutler Hammer AE16ANS0 Starter 7 Amp 3 PH 600 V H2007B
CUTLER HAMMER AE16AN0-A NSFP AE16AN0A
Cutler Hammer Adjustable Frequency Drive AF91AG0C001D
CUTLER HAMMER ADJ FREQ DIRVE 1HP AF91AG0C001D
Cutler Hammer AC Manual Starter 10HP 9115H222 NIB
Cutler Hammer AC Current Transformer D60LT2
Cutler Hammer AB REMOTE I/O 87-01369-01 PM 500/1500 EXCELLENT
CUTLER HAMMER AA33P USPP AA33P
CUTLER HAMMER AA33A USPP AA33A
CUTLER HAMMER AA23P NSFP AA23P
Cutler Hammer AA21A Thermal Overload Relay For 200 Starter Mounting 1-Pole
CUTLER HAMMER AA13PB OVERLOAD RELAY C2
CUTLER HAMMER AA13P USPP AA13P
Cutler Hammer AA13P Thermal Overload Relay 3 Pole NEMA Size 1
CUTLER HAMMER AA13P THERMAL OVERLOAD MANUAL RESET NNB
CUTLER HAMMER AA13A USPP AA13A
CUTLER HAMMER AA13A NSFP AA13A
CUTLER HAMMER AA11PB OVERLOAD RELAY C2
Cutler Hammer AA114RTK AL LO & Auxiliary Switch
CUTLER HAMMER A900M2DAC NSFP A900M2DAC
CUTLER HAMMER A8MC800 NSFP A8MC800
Cutler Hammer A700DG022B Multi Speed Starter
Cutler Hammer A700CN022 Starter Ser C1 -
CUTLER HAMMER A700BG022 NSPP A700BG022
Cutler Hammer A50FNO/A50FN0 Nema Size 4 Reversing Motor Contactor/Starter A50F2
CUTLER HAMMER A50ENO USPP A50ENO
CUTLER HAMMER A50-CNVOA USPP A50CNVOA
CUTLER HAMMER A50-CNOA USPP A50CNOA
Cutler Hammer A50CNOA Reversing Starter
CUTLER HAMMER A50-CNOA NSFP A50CNOA
CUTLER HAMMER A50-CNO USPP A50CNO
Cutler Hammer A50CNO Starter Series A1 -
CUTLER HAMMER A50CNO SERIES A1 STARTER NEMA SIZE 1
Cutler Hammer A50CNO A50-CNO Reversing Starter Series A1 -
CUTLER HAMMER A50BNOA USPP A50BNOA
CUTLER HAMMER A50BNO USPP A50BNO
CUTLER HAMMER A50BNO SIZE 0 REVERSING STARTER NNB
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CUTLER HAMMER A50BN0A NSPP A50BN0A
CUTLER HAMMER A50BN0A NSFP A50BN0A
CUTLER HAMMER A50BN0 NSPP A50BN0
CUTLER HAMMER A50BGOA NSPP A50BGOA
CUTLER HAMMER A50BGO USPP A50BGO
CUTLER HAMMER A50-ANO USPP A50ANO
CUTLER HAMMER A50AN0 USPP A50AN0
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CUTLER HAMMER A415VN000D SOLID STATE 415 575VAC XLNT
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CUTLER HAMMER A30CDA0G61 COMBINATION STARTER SIZE 1
CUTLER HAMMER A30BFAOG60 NSPP A30BFAOG60
CUTLER HAMMER A309TN NSFP A309TN
CUTLER HAMMER A308RN USPP A308RN
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CUTLER HAMMER A307SN USPP A307SN
CUTLER HAMMER A307-RN USPP A307RN
CUTLER HAMMER A307NN USPP A307NN
CUTLER HAMMER A307MN NSFP A307MN
CUTLER HAMMER A307LN NSFP A307LN
CUTLER HAMMER A307KN USPP A307KN
CUTLER HAMMER A302NN NSFP A302NN
CUTLER HAMMER A302KN NSFP A302KN
CUTLER HAMMER A302JN USPP A302JN
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CUTLER HAMMER A302HN NSPP A302HN
CUTLER HAMMER A302GN USPP A302GN
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CUTLER HAMMER A302ENY1 NSFP A302ENY1
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CUTLER HAMMER A302EN NSPP A302EN
CUTLER HAMMER A302DN USPP A302DN
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CUTLER HAMMER A302AN NSFP A302AN
Cutler Hammer a2x4pk Aux Switch
CUTLER HAMMER A25SNE60AA NSFP A25SNE60AA
CUTLER HAMMER A25SNE40A USPP A25SNE40A
CUTLER HAMMER A25SNE40A NSPP A25SNE40A
Cutler Hammer A25SNE40A 40amp 115V Coil Motor Starter
CUTLER HAMMER A25SGC30AA NSFP A25SGC30AA
CUTLER HAMMER A25CNE60A USPP A25CNE60A
CUTLER HAMMER A25CNC30A USPP A25CNC30A
CUTLER HAMMER A25CNC30A USPP A25CNC30A
Cutler Hammer A211K1CA NEMA size 1 motor control reversing starter
CUTLER HAMMER A210MOJAC NSPP A210MOJAC
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CUTLER HAMMER A210MACAC USPP A210MACAC
Cutler Hammer A210M2CAC reversing starter size 2 110/120V
Cutler Hammer A210M2CAC reversing starter model J size 2 110/120V
CUTLER HAMMER A210M2-CAC NSPP A210M2CAC
CUTLER HAMMER A210M2-CAC NSFP A210M2CAC
CUTLER HAMMER A210M1CAC NSFP A210M1CAC
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CUTLER HAMMER A202K4CA USPP A202K4CA
CUTLER HAMMER A202K47 USPP A202K47
Cutler Hammer A202K3CZM model M contactor 100amp 277V
CUTLER HAMMER A202K1CAM USPP A202K1CAM
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Cutler Hammer A202K1CAM Latched AC Lighting Contractor 3POLES MODEL L NEMA 1
Cutler Hammer A201KOCA Contactor Size 0 Non-Reversing
Cutler Hammer A201KOCA Contactor Size 0 Non-Reversing
CUTLER HAMMER A201KFCA USPP A201KFCA
CUTLER HAMMER A201KECA-J1 USPP A201KECAJ1
CUTLER HAMMER A201K3CA USPP A201K3CA
CUTLER HAMMER A201K3CA NSPP A201K3CA
CUTLER HAMMER A201K2CX
CUTLER HAMMER A201K2CW USPP A201K2CW
CUTLER HAMMER A201K2CW NSFP A201K2CW
CUTLER HAMMER A201K2CB NSFP A201K2CB
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CUTLER HAMMER A201K2CA
CUTLER HAMMER A201K1CX
Cutler Hammer A201K0CA CONTACTOR 18AMP 230V 3HP NOB
CUTLER HAMMER A200MACX USPP A200MACX
Cutler Hammer A200MACB size 00 3phase starter 208v
CUTLER HAMMER A200-MACAC USPP A200MACAC
CUTLER HAMMER A200M6CAC NON REVERSING STARTER CH
CUTLER HAMMER A200M6CAC NON REVERSING STARTER CH
CUTLER HAMMER A200M5CX NON REVERSING STARTER CH
CUTLER HAMMER A200M5CX CAT 2045A41G03 SIZE 5 MOTOR STARTER
CUTLER HAMMER A200M5CAC SIZE 5 NON REVERSING STARTER - - A
CUTLER HAMMER A200M4-CAC USPP A200M4CAC
CUTLER HAMMER A200M4CAC SIZE 4 NON REVERSING STARTER
CUTLER HAMMER A200M4CAC SIZE 4 MOTOR STARTER N6
CUTLER HAMMER A200M4CAC NON REVERSING STARTER CH
CUTLER HAMMER A200M4CAC
CUTLER HAMMER A200M4CAC
CUTLER HAMMER A200M3CAC SIZE 3 NON REVERSING STARTER
Cutler Hammer A200M3CAC Size 3 Motor Control Starter
CUTLER HAMMER A200M3CAC NON REVERSING STARTER CH
Cutler Hammer A200M3CAC model J non reversing starter 3 pole NEMA size 3
CUTLER HAMMER A200M3CAC
CUTLER HAMMER A200M3CAC
Cutler Hammer A200M2CX MOTOR CONTROL STYLE
CUTLER HAMMER A200M2CAC SIZE 2 NON REVERSING STARTER
CUTLER HAMMER A200M2CAC NON REVERSING STARTER CH
CUTLER HAMMER A200M2CAC NON REVERSING STARTER
CUTLER HAMMER A200M2CAC MOTOR STARTER 3PH 25HP NIB
Cutler Hammer A200M2CAC model J non reversing starter 3 pole size 2
CUTLER HAMMER A200M2CAC
CUTLER HAMMER A200M2CAC
CUTLER HAMMER A200M1CX USPP A200M1CX
CUTLER HAMMER A200M1CB NSPP A200M1CB
CUTLER HAMMER A200M1CB NSFP A200M1CB
CUTLER HAMMER A200M1CAC STARTER
CUTLER HAMMER A200M1CAC STARTER
CUTLER HAMMER A200M1CAC SIZE 1 NON REVERSING STARTER
CUTLER HAMMER A200M1CAC NON REVERSING STARTER CH
CUTLER HAMMER A200M1CAC
CUTLER HAMMER A200M0CWDJ1 NSPP A200M0CWDJ1
CUTLER HAMMER A200M0CWDJ1 NSFP A200M0CWDJ1
CUTLER HAMMER A200M0CB NSPP A200M0CB
CUTLER HAMMER A200M0CAC
CUTLER HAMMER A200M0CAC
CUTLER HAMMER A1X3PK AUXILIARY SWITCH
Cutler Hammer A1X3PK aux switch for series C type K breaker 250VDC
CUTLER HAMMER A1X2PK USPP A1X2PK
CUTLER HAMMER A1X2PK NSFP A1X2PK
Cutler Hammer A1X2pK aux switch for series C type J breaker 250VDC 600VAC
CUTLER HAMMER A1X2PK A1X4PK 600VDC 250VDC SEALED
CUTLER HAMMER A1X1PK USPP A1X1PK
CUTLER HAMMER A1X1PK NSFP A1X1PK
CUTLER HAMMER A1X1LTK NSFP A1X1LTK
CUTLER HAMMER A1L3LPK USPP A1L3LPK
CUTLER HAMMER A1L3LPK USPP A1L3LPK
CUTLER HAMMER A1L1LPK AL/LO SWITCH NIB
CUTLER HAMMER A15-DNOAB NSPP A15DNOAB
CUTLER HAMMER A13GN0 USPP A13GN0
CUTLER HAMMER A11FNO NSPP A11FNO
CUTLER HAMMER A11DNO SIZE 2 CONTACTOR N2
CUTLER HAMMER A10-FNOAB USPP A10FNOAB
Cutler Hammer A10FNO B1 NEMA Size 4 135 Amp 120 V
CUTLER HAMMER A10FN0 STARTER Q9-1
CUTLER HAMMER A10FN0 SIZE 4 135 AMP 120 V COIL MOTOR STARTER N6
CUTLER HAMMER A10FN0 SERIES A1 SIZE 4 MOTOR STARTER 120v Coil
Cutler Hammer A10ENO Size 3 Starter 120 Volt Coil
Cutler Hammer A10ENO Size 3 Starter 120 Volt Coil
Cutler Hammer A10ENO NEMA Size 3 480 V Coil
Cutler Hammer A10ENO B1 NEMA Size 3 90 Amp 120 V
Cutler Hammer A10ENO B1 NEMA Size 3 90 Amp 120 V
Cutler Hammer A10ENO A1 NEMA Size 3 90 Amp 480 V
Cutler Hammer A10ENO A1 NEMA Size 3 90 Amp 480 V
CUTLER HAMMER A10EN0CB USPP A10EN0CB
CUTLER HAMMER A10-EN0AB USPP A10EN0AB
CUTLER HAMMER A10-EN0 USPP A10EN0
CUTLER HAMMER A10-EN0 STARTER A10ENO
CUTLER HAMMER A10-EN0 STARTER A10ENO
CUTLER HAMMER A10EN0 SIZE 3 STARTER SERIES B1
CUTLER HAMMER A10EN0 SIZE 3 STARTER A1 SERIES
CUTLER HAMMER A10EN0
CUTLER HAMMER A10-EGO USPP A10EGO
CUTLER HAMMER A10EGO SIZE 3 480 V COIL SERIES A1 MOTOR STARTER
Cutler Hammer A10EGO Size 3 240V Coil Starter
CUTLER HAMMER A10EGO SIZE 3 120 V COIL 90 AMP MOTOR STARTER N4
Cutler Hammer A10EGO NEMA Size 3 480 V Coil
CUTLER HAMMER A10EG0 SIZE 3 MOTOR STARTER IN CAN 3-POLE 240VAC COIL A10EGO
CUTLER HAMMER A10-DNOAB USPP A10DNOAB
CUTLER HAMMER A10-DNOA USPP A10DNOA
CUTLER HAMMER A10-DNO USPP A10DNO
1783-US8T 含税2001
1783-ETAP 3470
1783-ETAP2F 6360
1783-ETAP1F 5210
2711P-T10C4D8 34200
1756-A4 3660
1756-PA75 12400
1756-L72 82700
1756-RM2 52000
1756-RMC1 2900
1756-EN2TR 33300
1756-A13 8160
1756-PA75 12400
1756-EN2TR 33300
1756-IB32 5260
1756-OB32 7420
1756-IF16 17200
1756-OF8 22100
1756-TBCH 929
1756-TBNH 748
1756-N2 308
3WX3156-3JJ00
PVWH-15LDFY-CLNNTK-CP740B
PVWH15LDFYCLNNTKCP740B
PVWH-15-LDFY-CLNNTK-CP-740B
H8QME-2 1
A5E00097365
MVI56E-MCM
332-5HF00-0AB0
3WX3156-3JJ00
PCI6031E 5
PCI-6031E
NI1772
信号分支器 MA-0185-100
ER14250 3.6V 1/2AA 50pcs
Micrologic5.0A 20pcs
Micrologic 5.0A
SGDH-02BE-RY53
1.空压机加载阀 SRC-330SWG 数量:6只
2.空压机最小压力阀 SRC-330SWG 数量:6只
1769-OF4CI 11200
1769-IF16C 11500
1769-OW16 4030
1769-IM12 2570
L26ERM
1769-PA4 4540
TPC1062K
TCF-142-S
IMC-21-S-SC
1B30035H01 1
DIL 4-22
DIL R 31
DIL3-2
DIL 3-22
DIL 2AM
DIL 1M
DIL 2AM
DIL 00AM
DIL 1AMC
DIL 2M
DIL00MC-10
DIL 0MC
DIL 0AM
3TF47
3TFS9
DIL1AM
DILR-31
DILM400
DILM400-S
Z4-70
Z4-100
Z4-140
Z4-180
DIL 8-22
DIL 8A-22
DILM50C
DILM500
DILM72C
DILM150C-XHI22
3TD45
扩展模块IC210EAR008,GE 1个
智能继电器存储模块 IC210TMP001,GE, 1个
绝对值编码器 EAM58C10-GS6XPCR-4096/4096 1个
智能继电器主机 IC210DAR020 1个
IC210EAR008 1,040.00
IC210TMP001 170.00
IC210DAR020 1,910.00
联系人:高晓英(销售部销售工程师)
手机:18050108093
邮箱:2745705376@qq.com