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其中輸入部分是由各種輸入設備，如按鈕、位置開關及傳感器等組成；控制部分是按照控制要求設計的，由若干繼電器及觸點構成的具有一定邏輯功能的控制電路；輸出部分是由各種輸出設備，如接觸器、電磁閥、指示燈等執行元件組成。電器控制系統是根據操作指令及被控對象發出的信號，由控制電路按規定的動作要求決定執行什么動作或動作的順序，然后驅動輸出設備去實現各種操作。由于控制電路是采用硬接線將各種繼電器及觸點按一定的要求連接而成，所以接線復雜且故障點多，同時不易靈活改變。
3RU1-116-1AB0, OVERLOAD,IEC,S00,CL10,1.1 - 1.6A,SCREW

SIEMENS,8SWA1011-0DG21, 20TERM BLOCK,SCREW,THROUGH-TYPE,4,BEIGE

SIEMENS, 52PX8A3K, PUSH BUTTON OPERATOR, FLUSH CAP, GREEN, 1NO CONTACT

3SP-SP CONTROLLER ON/OFF, LEGEND PLATE 22.5MM 16/PKG

1616440000, Z-series, Fuse terminal, Rated cross-section: 2.5 mm2, Dark Beige,

3VU9-135-1AB02, BUSBAR 63AMP LINE SIDE FEEDER 3VU9135-1AB02

SIEMENS, 3SB3930-0HA3, ILLUM. PUSHBUTTON CAP,EXT,METAL,YELE 10/PKG

SIEMENS, A1VAR001004, VARISTOR,660VRMS,250W 

8WH9000-1AA00, COVER,TERMINAL SIZE 2.5, GRAY 50/PKG

SIEMENS, 8WA1822-7EF16, G FUSE LINK,QUICK RESPONSE,1A RATED CONTINUOUS CURRENT

MARATHON, 6G38EF, END BRACKET FOR 6G38 SECTIONAL TERMINAL BLOCK; 25/BX

WEIDMULLER, 1028300000, WFF 35, TERMINAL 125AMP 1POLE 1000VAC SOLD EA

205208-1 -- AMP CRIMP SNAP PLUG ASSEMBLY 25PIN 10/PKG

3RH2911-1FA22, Auxiliary Contact Block, 2NO, 2NC

SIEMENS, 3UX1424,  Terminal Block Adaptor For 3ua60

3RA1941-1AA00 --CONNECTING MODULE FOR 3RV1.4 AND 3RT1.4,

SIEMENS, 3RH2921-1DA20, LATERAL AUX. SWITCH BLOCK, 2NO, FOR MOTO

8WH9020-6BC10, BRIDGE, 2-POLE, FOR TERM WIDTH 5.2 MM 50/PKG

SIEMENS, 5SX2102-8, SUPPLEMENTARY PROTECTOR,1P,2A,CURVED,  5SX21028

6SY9904, SIMODRIVE 611-A/D ELECTRONIC PLUG-IN TERMINAL, FOR MOTOR CONNE (3-POL)

SIEMENS FURNAS 49ASN0 - AUXILIARY CONTACT N 0.KIT ESP100

3SB3501-0BA21,PUSHBUTTON,MOM,RED,EXTND,OP,RND-MTL 

FRS-R-2 --FUSE, 2A, 600V, TIME DELAY; VOLTAGE RATING VDC:250V; VRATING VAC:600V

Siemens,3SB36031CB61,40MM Red Push-Pull Pushbutton, 3SB3603-1CB61

5SX2-105-7, SUPPLEMENTARY PROTECTOR,1P,0.5A,CURVE C

SIEMENS, CCE125, MCCB 125A COMPRESSION LUG KIT

Siemens, HPLP, Handle Padlock Device, NIB, VL Breaker

SIEMENS, 3SB03-PFG10, PUSHBUTTON GREEN MOM FLUSH 2POS, 3SB03PFG10

 6ES5-497-4UB22 Siemens CONNECTOR-4 SCREW 454 2SLOT(O)

SIEMENS, 3SB3400-1D, BA9S WITH 24V INCANDESCENT LAMP LAMPHOLDER, 3SB34001D

SIEMENS, 7NG3090-8AV, COLD JUNCTION TERMINAL

SIEMENS, 3SB3001-6BA00 EPILOT LIGHT,N/A,AMB,RINGS,OP,RND-PLSTC 3SB30016BA00

SIEMEN, 3RK1-903-0AA00, MODULE TERM DS ET200S PMD FOR PWR MOD

WEIDMULLER, 1683680000, Z-series, End plate, Partition plate,  49/PKG

SIEMENS, 3RH2911-1HA12, AUX. SWITCH 1NO+2NC FOR S00 & S0 SCREW

Siemens 52RB3E4 Mushroom Head Cap, Plastic, Set Screw, 2-1/2" Head, Yellow 

SIEMENS  3UA5000-1G, FURNAS ELECTRIC CO OVERLOAD RELAY 4-6.3AMP

SIEMENS, 3RH1911-1HA12, AUX SWITCH BLOCK

3RH2911-1DA20, AUX. SWITCH LATERAL 2NO FOR S00 SCREW NEW IN BOX

3RV2901-4E, TRANSVERSE AUX. SW 1NO+1NC RING LUG 

8WA1305, TERMINAL BLOCK,3-TERM,48MM,120A,600

CARLO GAVAZZI  CGC-9A-24  3P CONTACTOR W/1NO1NC 24VAC, CGC-9A

U70507, Fuseblock, 2-P, 50A/750V, 14x51mm Box Lug Wire Terminals, 2-14AWG

52AEE4 -- REPLACEMENT LAMP LED-YELLOW, 120 VOLT

Siemens,3SB02-P3BP, 22MM Push Button, 30MM M-Room, Blck, 3SB02P3BP

Siemens,3SB3500-2SB61,Red Selector Switch, 3 Positions, 3SB35002SB61

3RV1913-1DA00 / 3RV1913-1D N & PE TERM., 72MM PROTECTION IP55, WALL MOUNTING

6ES5-497-4UB42 SIEMENS 490 FRONT CONNECTOR,20-PIN,SCREW,SPARE 

7431-0048, ft RS-232 cable w/DE9S connector 

5SY6104-7, CIRCUIT BREAKER,1P,4A,CURVE C

SIEMENS, A1-101-531-201, MOUNTING KIT, RESISTORS,2-HIGH MTG, A1101531201

SIEMENS, TSSL3, BREAKER VL TRML SHIELD STD 3P L-FR 600

SIEMENS, A1108031501, FLAT CABLE AY,64 CKT

EPCOS, B80K550-ND, VARISTOR 910V 100KA CHASSIS

SIEMENS, 3RH2911-1HA21, AUX. SWITCH 2NO+1NC FOR S00 & S0 SCREW

SIEMENS, 3RH2911-1HA30, AUX. SWITCH 3NO FOR S0 SCREW 

SIEMENS, 3RH2911-1GA31, AUX. SWITCH 3NO+1NC FOR S00 SCREW 

SIEMENS, 3RH2911-1DA02, AUX. SWITCH LATERAL 2NC S00+S0 SCREW

SIEMENS, 6SE7090-0XX84-2FA0, PANEL OPERATOR PARAMETER AY PMU KEYPAD

SIEMENS, TA2JG250, BREAKER VL LUG CU/AL 250KCMIL J-FR ACC 3/pkg

SIEMENS, 3TX7120-1DC13, RELAY 10AMP 24VAC 8PIN OCTAL

0518960011,  DEK 6 FWZ 11-20,  Terminal markers, Card, 5 x 6 mm, 50/CARD 10/BX

8WH9130-0MA00, TERMINAL,SHIELD,TERM SIZE 14 FOR BUSBAR

3RH2911-1HA31, Auxillary Contact, screw terminal, NO+1NC

SIEMENS, 3RH2911-1DA11, AUX. SWITCH LATERAL 1NO+1NC S00 SCREW- NEW IN BOX

A50P20-1, 500 Volt 20 Amp Current Limiting,Very Fast Acting Semiconductor Fuse

U70507, Fuseblock, 2-P, 50A/750V, 14x51mm Box Lug Wire Terminals, 2-14AWG

SIEMENS 3TX7144-1E5 RELAY SOCKET, DIN RAIL MOUNT, 300V@10AMP, 14PIN

3RH1131-1JB40 - CONTROL RELAY,3NO,1NC,24VDC COIL,SCREW

BUSSMANN BY EATON  NOS-30  FUSE, 30A, 600V

SIEMENS, 52AEB3, ACCESSORY, LED,GREEN 6V, LAMP

5SX2-101-8 / 5SX2101-8 SUPPLEMENTARY PROTECTOR,1P,1A,CURVE D CURCUIT BREAKER

FERRAZ, GGM610, 250V 6/10A 5X20MM FUSEGGM6/10

SIEMENS, 3RH2921-1DA11, AUX. SWITCH LATERAL 1NO+1NC S0 SCREW,

Philips - TUV 15W G15T8 Air/Water Treatment Germicidal UV Light Bulb

SIEMENS, 3TX4440-0A, AUX. CONTACT BLOCK,4NO,W/SCREW TERMINALS

THOMAS&BETTS, 256-30695-1403, 400 WELD CU. STD. BRL. 1 HOLE 3/8"B 

SIEMENS, 3RH2911-1GA13, AUX. SWITCH 1NO+3NC FOR S00 SCREW 

SIEMENS, 8WA1-857, INSULATING MOUNTING BLOCK, INCLUDES SCREWS, BEIGE (6/PKG)

SIEMENS, 3RH2921-1DA02, AUX. SWITCH LATERAL 2NC S0 SCREW

SIEMENS, 5ST3011 AUXILIARY SWITCH 14AMP 2NO UR 440V 

Siemens 3SB3257-0AA61 Pushbutton Unit, WHITE

3SB3203-1HA20 - E-stop button, 40mm, twist, w/ cont block

FS106C -- SLEEVE FEMALE SCREW TERMINAL INSERT 6P + GROUND

SIEMENS, 3SB3240-6BA60, PILOT LIGHT,WHT,FV, LED,130V,RINGS,CMPLT, 3SB3240-6BA60

52PA8B3, Switch,Extended push button Mom.; Green; Chrome mounting nut; 30 mm

LBRS120, SHAFT EXTENSION 120MM LONG

Siemens 3SB3245-0AA41 Pushbutton Unit,  Green

3SB36020AA51, PUSH BUTTON ACTUATOR,ROUND,METAL,22MM,COMBINATION

SIEMENS  6ES7193-4CK20-0AA0, SIMATIC DP, TERM MOD TM-P30S44-A0, 6ES71934CK200AA0

SIEMENS, 9WH2000-0AH00, TERM BLOCK,SPRNG LOAD,THRU-TYPE,6,GRAY 43/PKG

Siemens, 3RU1116-0JB0,.7-1 AMP OVERLOAD RELAY, 3RU11160JB0

SIEMENS, 52AEB2, ACCESSORY, LED LAMP ,RED 6V

SIEMENS FURNAS OVERLOAD RELAY 3UA70 10-1B 3UA70101B PLC /3UA7010-1B

IEMENS, 5ST2143, BUSBAR, 210 MM L 2 PHASE 65 or 120 AMPERE COPPER BUSBAR

Siemens, 3RP1511-1AQ30

SIEMENS, 3SE3200-6XX03, MOLDED POSITION SWITCH, 3SE32006XX03

SIEMENS, 5SX2102-8, SUPPLEMENTARY PROTECTOR,1P,2A,CURVED,  5SX21028

TEXAS INSTRUMENTS, 6MT14-40GL, DC OUTPUT MODULE

AMP-TRAP, AJT-7, 600V 7A CLASS J TD FUSE  7/PKG

SIEMENS, 3TX7-402-3T, SURGE SUPPRESSOR,127-240VAC,150-250VDC

SIEMENS, 3RU2126-1AB0, OVERLOAD RELAY 1.1.1.6 A FOR MOTOR PRO 

SIEMENS, 3RV1935-5A, MSP S2 LINE TERMINAL,TOP

SIEMENS, 6FX2003-7BX00, MOUNTING FLANGE F. CONN SZ 1.

Weidmüller, 9025860000, Wire end ferrule, 0.75 mm2, 10 mm, White

SIEMENS, A1101531200, MOUNTING KIT, RESISTORS, 1-HIGH MTG 

SIEMENS, 52PA8B2K, PUSH BUTTON OPERATOR, EXTENDED CAP, RED, 1 NO

SIEMENS, 3UA5500-1C, OVERLOAD RELAY 1.6-2.5AMP 1NO/1NC 150V

FERRAZ SHAWMUT, A70P100-4, AMP-TRAP, SEMICONDUCTOR, 100 A, 700 VAC, 650 VDC

SIEMENS 8WH30200AE00 - TERMINAL BLOCK, IDC, 2-TIER, 1.5, GRAY, 2-POLES 10/PKG

SIEMENS 8WH20000AH00 - TERMINAL BLOCK, SPRING LOAD, THRU-TYPE, 6, GRAY 32/BX

Siemens 52PA8A2 Heavy Duty Pushbutton, Flush Cap, Red

5SX2116-8 - CIRCUIT BREAKER, 1P,16A,CURVE D

3RA2913-2BB1 -- WIRING KIT ELEC & MECH FOR WDS S00 SCREW

5SY4103-5 -- SUPPLEMENTARY PROTECTOR,1P,3A,CURVE A

Siemens, 3RV19353B,  MSP S2 BUS For 3+Accessories

Siemens, 5SX9360, Shunt Release F. for MCB's 5SX6 & 7 

Siemens,8WA2011-1SG23, Term Block,Sprng Load,Fuse, 10/PKG,  8WA20111SG23

3SB3652-6BA30 / 3SB36526BA30, PILOT LIGHT,YLW,FV, LED,230V,RINGS,CMPLT 

6ES5490-7LB11, CONNECTOR FRONT S5-115 24 PIN SCREW 

SIEMENS, 3RU2126-1EB0, OVERLOAD RELAY 2.8.4.0 A FOR MOTOR PRO 

SIEMENS, 3RU2116-0JB0, OVERLOAD RELAY 0.70.1.0 A FOR MOTOR PR 

SIEMENS, 52PB9D1K Heavy Duty Mushroom PushButton Unit, Assembled Contact Block

SIEMENS, 6FX2003-7DX00, MOUNTING FLANGE F. SIGNAL CABLE 

SIEMENS, 3RH2911-1GA22, AUX. SWITCH 2NO+2NC FOR S00 SCREW 

SIEMENS, 5SX2102-7, CIRCUIT BREAKER 2AMP 1POLE 230/400VAC C-CURVE

051896001, NIB!!  TERMINAL MARKER 5X6MM WHITE 1-10 50/CARD  10/BX DEK6FWZ1-10

8WH9003-1GA00, COVER, TERMINAL SIZE 4 50/PKG

3RA1942-2E, CONTACTOR BASEPLAT-SIDE BY SIDE S3,S3,S2

SIEMENS, 8WA1011-1PG00, GROUND TERMINAL BLOCK, 600 V, 18-10 AWG, G/Y (11/PKG)

6SL3-060-4AM00-0AA0, D-CLIQ CABLE,IP20/20-PREFAB,0.36M(1.2FT)

SIEMENS 8WH30200AE00 - TERMINAL BLOCK, GRAY, 2-POLES 50/BX 8WH3020-0AE00  NIB!

52NL02 Heavy Duty Legend Plate, Water and Oil Tight, 52, 1-7/16" Height, 2" Widt

60608T - 3-Pole Fuse Block for 600 Volt 31 to 60 Amp Class T Fuses

5SX2350-7 -CIRCUIT BREAKER T55 400V, 6KA, 3-POLE,

3SB3001-1DA31 -- Illuminated mushroom push-button switches, 3SB30 series

SIEMENS, 52SA2EAB, SEL SWITCH,MNTD,SHT LVR,3POSECAM

CONTROS CONCEPTS, SSO3-SHWE-NO/NO, 30MM 3 POS SELECTOR SWITCH

Siemens 52PX8A3 Pushbutton Operator, Black Max Corrosion Resistant,  GREEN

Siemens 3SB3245-0AA31 Pushbutton Unit

SIEMENS, 6RY17050AA02, TSE RESISTOR 2 X 15R +-5 PERCENT ,6RA70

SIEMENS, 3RG4112-3AG01, PROXIMITY SWITCH IND BERO 15-34VDC PNP NO

SIEMENS, 3SB3245-0AA61. PUSHBUTTON,MOM,WHT,FLSH,CPLT,RND-PLSTC

SIEMENS, 52AED47, ACCESSORY, 7 CLUSTER LED,YELLOW,24V, LAMP