名稱:風扇速度控制器
1概述
IC設計者力求在越來越小的封裝里放入更多高速運行的晶體管，但這必將導致發(fā)熱。為了把這些高功率IC放進更小的封裝內，就必須有效解決熱管理問題。在很多應用中使用風扇來降溫，但風扇會帶來機械故障，增加功耗和噪聲。因此，應當對風扇速度進行監(jiān)測和控制以解決這些問題，從而使風扇工作更可靠，功耗和噪聲更低。由于直流無刷風扇易用、可靠，因此是大部分電子產品的*方案。它是一個兩端器件，加上直流電壓即可工作。其直流電壓電壓有5V，12V，24V和48V，目前選和的12V風扇較多。隨著12V電源的減少，5V風扇的用量將會增加。電信領域一般使用48V風扇。直流無刷風扇的換向整流是在風扇內部通過電子方式控制的，老式直流風扇使用機械工刷子，因而會產生較高的EMI，并易于損壞。而無刷風扇用電子傳感器和開關來替代機械式刷子，從而延長了使用壽命，是一種簡單易用、工作可靠的兩端器件。直流無刷風扇的端電壓不同，其轉速和消耗的電流也不同（成正比）。盡管直流無刷風扇有很高的可靠性，但它仍然是機械器件。在長時間使用時，其風扇速度和冷卻效率可能會下降甚至失效，所以要對風扇進行連續(xù)監(jiān)測。很多風扇制造商提供有不同的*方式，一般分為：報警傳感器和速度傳感器兩類。利用報警傳感器可在風扇速度低于某個門限值時給出報警信號。而某些制造商則用速度傳感器給出與頻率成正比的風扇速率的輸出信號，一般每轉婁產生2個脈沖。報警傳感器和速度傳感器都可以提供漏極開路或內部上拉輸出，內部上拉可以是TTL電平或電源電壓。值得注意的是：用風扇速度控制電源電壓的改變將會影響傳感器和其它電路。而且實際設計中必須考慮風扇的使用條件，（如zui惡劣的溫度范圍、zui大功耗、風扇的誤差和使用壽命等），工作在適當?shù)臈l件下可以降低風扇速度，而在zui惡劣的條件下，則應加快風扇速度。合理控制風扇速度能夠降低系統(tǒng)的噪聲和功耗，從而延長風扇的壽命并減少灰塵。
2風扇速度控制方法
2.1脈寬調制法（PWM）
脈沖寬度調制法（PWM）是將風扇電源的開關頻率設為固定值，通過改變其占空比來調節(jié)風扇速度的方法。占空比越大，風扇速度越快。這種控制方式的關鍵在于選擇合適的開關頻率，如果頻率太低，風扇速度將會隨PWM周期而振蕩。相反，如果頻率過高，風扇內部的換向整流電路會斷開風扇加速/減速電路的電源而導致風扇停轉。一般的頻率范圍是20Hz～160Hz。另外，PWM的上升和下降時間要足夠慢，以保證風扇的*穩(wěn)定。PWM控制方式的優(yōu)點是驅動電路簡單、有很好的啟動特性、晶體管熱量耗散小等。缺點是增加了風扇的應力，不便使用速度報警傳感器，而速度報警傳感器與電機使用同一電源供電，如電機電源以20Hz～160Hz頻率接通或斷開，則傳感器也會隨之關斷或開啟，從而失去應有的檢測功能。在PWM控制方法中，風扇的電壓為額定值（例如12V風扇中的12V電源）或零電壓，但由于風扇沒有滿負荷運轉，因而它的反向電動勢就會減少，這將導致PWM導通期間的電流可能會大于正常值。雖然風扇的設計使共能夠處理較大的電池，但在風扇啟動階段，電流將每秒增加30倍，這將對風扇的可靠性產生很大影響。盡管如此，PWM仍然是低成本應用的理想選擇。
2.2線性調節(jié)方法
這種方法利用線性穩(wěn)壓器來調節(jié)風扇的直流電壓，它要求風扇能夠工作在較寬的電壓范圍內與PWM控制方式相比，其優(yōu)點是能夠使用速度和報警傳感器；缺點是功耗較大，需要解決啟動和停止問題。在用線性穩(wěn)壓器控制風扇兩端的直流電壓時，雖然其功率消耗將產生熱量，但在zui大致冷和zui小致冷狀態(tài)下的功率消耗卻近似為零。因為在zui大致冷時，調整管上的電壓差近似為零；zui小致冷時調整管上的電流近似為零，所以功耗近似為零。在風扇兩端的電壓為zui大工作電壓的一半時，其功耗zui大，這時的功率耗散可由下式估算： P=1/4(Vmax×Imax)式中，V和I分別是風扇的額定電壓和額定電流，如1.2W的風扇的調整管的功率耗散只有300mW（12V的風扇工作在6V）。所以風扇速度降低時能夠節(jié)省一定的功率。啟動和停止是相關聯(lián)的，風扇在啟動前需要一定的啟動電壓。風扇運轉后，一旦風扇電壓降低到停止電壓，風扇就會停止運轉。啟動電壓一般等于或稍大于停止電壓，通常是風扇額定電壓的25%～50%，在沒有速度*時，判斷風扇是運轉還是停止有兩種方法：*是保證風扇兩端的電壓始終大于啟動電壓，一般可設置該電壓大于額定電壓的60%，以降低風扇電壓的控制范圍。第二是使用帶有轉速計的風扇，并由微控制器對轉速計進行*。在風扇沒有啟動或停止前，利用軟件可以了解其狀態(tài)，但是這種方法將增大設計的復雜程度和軟硬件資源。
2.3 DC-DC控制器
同線性穩(wěn)壓方式一樣，DC-DC開關方式也是通過控制風扇兩端的直流電壓來控制風扇速度，所不同的是這種方式采用的開關方式。這兩種方式的優(yōu)缺點基本相同，有一點不同的是DC-DC開關方式的理想效率是*，所以不會產生熱量。實際上DC-DC開關控制器的效率通常是75%～95%,，效率升高，成本和復雜程度就會增加。只有在風扇工作電壓降低低時才會節(jié)省功率，當工作電壓是飽和電壓的一半時，功耗降低的幅度zui大。節(jié)省功率的代價是成本和復雜程度的提高，所以DC-DC方式一般用于例攜系統(tǒng)以及需要大功率風扇或多個風扇控制的應用中。
2.4/低端驅動
以上三種方式可以是低端驅動也可以是驅動。驅動的電路稍復雜一點，好處是風扇負端可以接地，速度和報警傳感器具有相同的參考地，而且易于接口。低端驅動不需要電平轉換，但速度和報警傳感器需要電平轉換電路。這時風扇的正端一般保持在恒定電壓，而負端電壓是可以控制和調節(jié)的，因此速度和報警傳感器的參考點易改變，因而需要電平轉換電路。
3無轉速計的風扇速度控制
兩個不帶報警傳感器和速度傳感器的風扇速度控制電路，的MAX1669構成PWM控制方式，是MAX1669構成線性調節(jié)控制方式。MAX1669既是溫度傳感器又是風扇控制器，兩部分可獨立工作并與微控制器相配合，其接口方式為SMBus。溫度傳感器通過安裝在遠端的二極管來完成，這個二極管也可以包含在某些器件內部，例如XILINX公司的VIRTEX系列器件，這樣會更確切地控制關鍵器件的溫度并省去外部二極管。當MAX1669檢測的溫度增加時，可由軟件來控制并提高風扇速度。風扇速度的控制與溫度測量無關，所以這是開環(huán)控制系統(tǒng)，不存在穩(wěn)定性問題。但無地直接知道被控制件的實際溫度，也無法直接了解風扇是否失靈或制冷效率是否下降。如果溫度傳感器放在要制冷的地方，可設計成一個閉環(huán)系統(tǒng)，風扇速度增加，溫度下降。閉環(huán)系統(tǒng)需要注意穩(wěn)定性的問題，同時會增加軟件的復雜性。
4帶有轉速計的風扇速度控制
是帶有轉速計的風扇速度控制電路。MAX6625用于測量溫度并通過類似I2C的兩線接口傳送至微控制器。兩線接口將命令傳送給MAX6650，由MAX6650來控制風扇的速度，MAX6650內部的接口電路可以連接風扇的轉速計（速度傳感器），風扇速度通過SMB兩線接口讀齲用MAX6650即可構成風扇速度控制器或風扇速度調節(jié)器。可用風扇速度控制器來控制風扇的兩端電壓，從而達到控制風扇速度的目的。風扇速度調節(jié)器實際上是用轉速計來對風扇速度進行測量和調節(jié)。把MAX6650用于風扇速度控制器時，用微控制器從MAX6625讀取溫度，并從MAX6650讀取速度，然后通過MAX6650里的DAC來控制風扇兩端的電壓和速度。微控制器必須不斷地讀取風扇速度和通過DAC來調節(jié)風扇速度，這在啟動和停止階段尤為重要。在用MAX6650進行速度調節(jié)時，可利用微控制器給郵速度指令，并用MAX6650自動*和調節(jié)風扇速度。一旦速度指令傳送給MAX6650，微控制器就可以不再介入，這樣可減少軟件的工作量，如果MAX6650不能提供指令所要求的控制電壓，系統(tǒng)將產生報警信號給微控制器以產生中斷。

◆ 企業(yè)名稱：廈門興潤星貿易有限公司

◆ 企業(yè)性質： 有限責任公司

◆ 主營業(yè)務：DCS,PLC

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CUTLER HAMMER TRANSFORMER 3 KVA S20N11S03N
CUTLER HAMMER TRANSFORMER 3 KVA CATS20K11503N
CUTLER HAMMER TRANSFORMER 120x240V - 16/32V Model S10N06A16N
cutler hammer transformer
CUTLER HAMMER Top Wobble Operator Limit Switch E50AW1Y1 Eaton
CUTLER HAMMER TMR5P08240 NSFP TMR5P08240
CUTLER HAMMER TL480N25 NSFP TL480N25
Cutler Hammer TL480N15 
Cutler Hammer Timer Solenoid D80AME
Cutler Hammer Timer Solenoid D80AMA
CUTLER HAMMER THERMAL OVERLOAD RELAY CATC316KNA3A 18-25A
CUTLER HAMMER THERMAL OVERLOAD RELAY CATC316FNA3S SERIES A2 18-24A 
CUTLER HAMMER THERMAL MAGNETIC TRIPUNITJT325?0T 250AMP 
CUTLER HAMMER THERMAL MAGNETIC BREAKER CAT ED2110 110A/600VAC/2 POLE 
Cutler Hammer Terminal Lugs TA1200NB1 Lot of 4 
CUTLER HAMMER TDR132E-S USPP TDR132ES
CUTLER HAMMER TB65-6 NSPP TB656
CUTLER HAMMER TB147-2 USPP TB1472
CUTLER HAMMER TAP365G 400 AMP BUSS DUCT PLUG TAP 365
CUTLER HAMMER TAP365G 400 AMP BUSS DUCT PLUG TAP 365
CUTLER HAMMER TAP362 FUSIBLE BUSWAY SWITCH 60A 600V 
CUTLER HAMMER TAP 364 FUSIBLE BUSWAY SWITCH 200 AMP 600 VOLT 
cUTLER HAMMER TAP 362 FUSIBLE BUSWAY SWITCH 60 AMP 600 VOLT 
CUTLER HAMMER SZ 5 MOTOR STARTER CATCI0GN3
CUTLER HAMMER SWITCH MAIN CATECC225R
Cutler Hammer switch gear FDPT 3222R
CUTLER HAMMER SWITCH BODY FUSIBLE J WITH TEST C363UV60JT 60A/600V 
CUTLER HAMMER SWITCH BODY FUSIBLE J WITH TEST C363UC30JT 30A/600V 
CUTLER HAMMER SVX9000 SVX020A2-5A4B1
CUTLER HAMMER SVX9000 SVX020A2-5A4B1
CUTLER HAMMER SVX9000 SVX010A1-5A4B1
CUTLER HAMMER SVX9000 SVX005A1-5A4B1?~~~ 5HP 
CUTLER HAMMER SVX9000 SVX005A1-5A4B1
CUTLER HAMMER SVX9000 SVX002A1 4A1B1
CUTLER HAMMER SVX9000 ADJUSTABLE FREQUENCY DRIVE
CUTLER HAMMER SVX060A2-4A1N1 USPP SVX060A24A1N1
CUTLER HAMMER SVX060A2-4A1N1 USPP SVX060A24A1N1
CUTLER HAMMER SVX060A1-2A1N1 USPP SVX060A12A1N1
CUTLER HAMMER SVX015A1-4A1B2 NSFP SVX015A14A1B2
CUTLER HAMMER SVX015A1-4A1B1 USPP SVX015A14A1B1
CUTLER HAMMER SVX010A1-4A2B1 USPP SVX010A14A2B1
CUTLER HAMMER SVX010A1-4A1B1 AC DRIVE 10HP XLNT
CUTLER HAMMER SVX010A1 4A1B1
CUTLER HAMMER SVX003A1-4A1B1 AC DRIVE 380-500V XLNT
Cutler Hammer SVX002A1-5A4N1 525-690VAC 2HP SVX9000 VFD
CUTLER HAMMER SVX002A1-4A1B1 USPP SVX002A14A1B1
CUTLER HAMMER SV9MLPNL USPP SV9MLPNL
CUTLER HAMMER SV9MLPNL NSFP SV9MLPNL
CUTLER HAMMER SV9IOC100 NSFP SV9IOC100
CUTLER HAMMER SV9F75AC-5M0B0?0 USPP SV9F75AC5M0B00
Cutler Hammer SV9F75AC-5M0B0?0 SV9000 Drive 
Cutler Hammer SV9F75AC-5M0B0?0 SV9000 Drive
CUTLER HAMMER SV9F50AG-V5M0B?00LM9Y4 NSPP SV9F50AGV5M0B0?0L
CUTLER HAMMER SV9F50AG-V5M0B?00LM9Y4 NSFP SV9F50AGV5M0B0?0L
Cutler Hammer SV9F50AC-5G0B0?0 SV9000 Drive 5-75HP
Cutler Hammer SV9F50AC-5G0B0?0 SV9000 Drive -  No Box
Cutler Hammer SV9F30AC-5M0B0?0 SV9000 3-4HP Drive
Cutler Hammer SV9F30AC-5M0B0?0 SV9000 3-4HP Drive
CUTLER HAMMER SV9F30AC-5M0B0?0 NSPP SV9F30AC5M0B00
Cutler Hammer SV9F20AC-5M0B0?0 AC Drive 
CUTLER HAMMER SV9020AC-2M0B0?0 NSFP SV9020AC2M0B00
CUTLER HAMMER SV9010AC-5G0B0?0 AC DRIVE 10HP 500V XLNT
CUTLER HAMMER SV9000 SVX 9000 SVX020A1-5A4B
CUTLER HAMMER SV9000 SV9F50AS-6M0B0?0
CUTLER HAMMER SV9000 SV9F50AS-6M0B0?0
CUTLER HAMMER SV9000 SV9020AS-6M0B0?0
CUTLER HAMMER SV9000 SV9020AS-6M0B0?0
Cutler Hammer SV9000 Series AC Drive SV9F75AS-6M0B0?0 - 75CT/10VT HP 
Cutler Hammer SV9000 Series AC Drive SV9050AS-6M0A0?0 50CT/60VT HP Brand 
CUTLER HAMMER SV9000 FREQUENCY DRIVE SV9020AC-2M0B0?0 FREQUENCY DRIVE
CUTLER HAMMER SV9000 FREQUENCY DRIVE SV9015AC-5M0B0?0
CUTLER HAMMER SV 9000 SV9040AS-6M0B0?0
Cutler Hammer Strap kit circuit breaker panel KPRL4ND PRL4 hardware 1200amp
Cutler Hammer Strap kit circuit breaker panel KPRL4KDT PRL4 hardware KD3400F
CUTLER HAMMER STARTER-MAGNET?IC SERIES A1 600V
CUTLER HAMMER STARTER SIZE B 5 HP  600V 
CUTLER HAMMER STARTER SIZE 3 CATA10E-2
Cutler Hammer starter size 2 A11D10/120V
Cutler Hammer starter overload relay size 1 2115V 3230V 120/240 B10CN0F
CUTLER HAMMER STARTER NON-REVERSING CONTACTOR NEMA SIZE 6 CATA201K6CA *
CUTLER HAMMER STARTER NON-REVERSING CONTACTOR NEMA SIZE 6 CATA201K6CA *
CUTLER HAMMER STARTER NON-REVERSING CONTACTOR NEMA SIZE 5 CATA201K5CAC 
Cutler Hammer Starter NEMA Size 1 AN16DNO With HMCP 30Amp Type12 Enclosure
Cutler Hammer Starter NEMA Size 1 AN16DNO With HMCP 30Amp Type12 Enclosure
Cutler Hammer Starter Model C10GN2 ~ 270 AMP ~ 600VAC ~ Nema Size 5 ~ Series A1
CUTLER HAMMER STARTER ITNEMA FVNR SIZE 4 STARTER135AMP CATN101ES4P3A 
Cutler Hammer Starter E101A06C3A FVNR A-Frame 6A 24VDC 7122 
CUTLER HAMMER STARTER COIL 110V 7AMPS CATAE16ANSOAC SIZE A 3 POLE 
CUTLER HAMMER STARTER COIL 110V 44AMPS CATAE16HNSOAB SIZE H 
Cutler Hammer Starter C832KN9 120 V Coil C832LN1 120 V Coil C10EN3 120 V Coil
Cutler Hammer Starter C10FN3 Size 4 CLEAN
CUTLER HAMMER Stainless Safety Switch TYPE 4 60A 600V
Cutler Hammer STAINLESS DH363NWK 100 amp FDH363WK Safety Disconnect Switch
Cutler Hammer Stainless DH362UWK 60 amp Non-FSafety Disconnect Switch 
Cutler Hammer Stainless DH361UWK 30 amp Non-FSafety Disconnect Switch
Cutler Hammer Stainless 4X 60 Amp 600 Volt Disconnect Switch 60A 600V
Cutler Hammer SRV86LS1G A Digitrip RMS/R 810
CUTLER HAMMER SQUARE D GROUND FAULT BREAKERS SIEMENS
CUTLER HAMMER SPX003A1-4A1B1 NSFP SPX003A14A1B1
Cutler Hammer spring release 110/127VAC 110/125VDC 2C12790G48 magnum breaker
CUTLER HAMMER SPHM1HM0005A NSFP SPHM1HM0005A
CUTLER HAMMER SPH81999 USPP SPH81999
Cutler Hammer Solenoid Coil Size D 9-941-45 
CUTLER HAMMER SNT3P14K NSFP SNT3P14K
CUTLER HAMMER SNT3P11K USPP SNT3P11K
CUTLER HAMMER SNT3P11K NSFP SNT3P11K
CUTLER HAMMER SNT1RT08K NSFP SNT1RT08K
CUTLER HAMMER SNT1RP08K NSFP SNT1RP08K
CUTLER HAMMER SNT1RB18 shunt trip 415-600V NOS
CUTLER HAMMER SNT-1LP18K NSFP SNT1LP18K
CUTLER HAMMER SNT1LP03K NSFP SNT1LP03K
CUTLER HAMMER SMCU250KB NSFP SMCU250KB
Cutler Hammer Slide Plate Handle Mech Series C 314C386G03 NIB
Cutler Hammer SLDN600 circuit breaker enclosure 600amp type 1 2-3 pole
Cutler Hammer SLDN600 circuit breaker enclosure 600amp type 1 2-3 pole
Cutler Hammer Size2 Combo Mag Starter wA10DNO Starter
Cutler Hammer Size 6 Vacuume Starter westinghouse
Cutler Hammer Size 6 Vacuume Starter westinghouse
Cutler Hammer Size 6 Contacts 23-3836 Clean Take Out 
Cutler Hammer Size 6 Contactor C10JND3 400 HP 460/575 V 540 Amps
Cutler Hammer Size 6 Contactor C10J3
CUTLER HAMMER SIZE 6 CONTACTOR A201K6CX
Cutler Hammer Size 6 Contactor 10-5822 C1 120 V Coil
Cutler Hammer Size 5 Vacuume Starter westinghouse
Cutler Hammer Size 5 Starter AN16SN0 120V Coil 
Cutler Hammer Size 5 Starter A200 M5C XXZ1 
Cutler Hammer Size 5 Freedom Series AN16SN0 120volt Coil 2-Available 
Cutler Hammer Size 5 Contactor Starter CN15SN3 
CUTLER HAMMER SIZE 5 CONTACT KIT
CUTLER HAMMER SIZE 5 COIL 2050A14G05  120-110VOLT 60 HZ
CUTLER HAMMER SIZE 5 CN155N3 SERIES A1
Cutler Hammer Size 4 Starter C10FN3 120 Volt Control
Cutler Hammer Size 4 Starter A10F20 Volt Control 
Cutler Hammer Size 4 Starter A10F20 Volt Control
Cutler Hammer Size 4 Starter
Cutler Hammer Size 4 Size 3 A10FNO A10ENO 
CUTLER HAMMER SIZE 4 REVERSING STARTER A50FNO 
Cutler Hammer Size 4 Full Voltage Starter A10FN0AB 
Cutler Hammer Size 4 Enclosed Contactor C10FG3BB
CUTLER HAMMER SIZE 4 CONTACTOR CATCN15NN3 135 AMP
Cutler Hammer Size 4 Contactor C10FN3 135amp
cutler hammer size 4 contactor
CUTLER HAMMER SIZE 3 STARTER CATA10E-2
Cutler Hammer Size 3 Starter C10EN3 120 Volt Coil
Cutler Hammer Size 3 Starter C10EN3 120 Volt Coil
Cutler Hammer Size 3 Starter A10E20 Volt Control
CUTLER HAMMER SIZE 3 REVERSING CONTACTOR A50ENV0
Cutler Hammer Size 3 Replacement Contacts 6-16-2 
Cutler Hammer Size 3 Contactor A10ENO 240 Volt Coil 
CUTLER HAMMER SIZE 3 A10EG0 A10EGO A10E-1 MOTOR STARTER /CLEAN 
Cutler Hammer size 3 90amp starter 110/120V coil
Cutler Hammer Size 3 3-Pole Power Unit 240V C10EYBB
Cutler Hammer size 2 Starter with a CPT and HOAHand off automatic switch
Cutler Hammer Size 2 Starter MECN2228AAF 84-28757-9
Cutler Hammer Size 2 Starter
Cutler Hammer Size 2 Reversing Motor Starter
Cutler Hammer Size 2 IEC Industrial Starter A201K2CA 25HP 120VAC Coil
CUTLER HAMMER SIZE 1 STARTER DISCONNECT
Cutler Hammer Size 1 Reversing Contactor ECN0611AAA 
Cutler Hammer Size 1 Contactor C10CN3A 120 Volt Coil 
CUTLER HAMMER SIZE 1 COMBO STARTER NEMA 3R
Cutler Hammer SIze 1 Combo Mag Starter Non F
Cutler Hammer Size 1 Combination Starter Nema 3 
CUTLER HAMMER SIZE 1 A10C-1 ALSO A10CG0 27A
CUTLER HAMMER SIZE 0 COMBO STARTER ECN1601AAA WITH HOA AND PILOT IN BOX
Cutler Hammer Size 0 Combo Mag Starter NEMA 1
Cutler Hammer Single-Phase Automatic Transfer Switch-600 Amps VT600ATS
Cutler Hammer Single-Phase Automatic Transfer Switch-400 Amps VT400ATS
Cutler Hammer Single-Phase Automatic Transfer Switch-300 Amps VT300ATS
Cutler Hammer Single-Phase Automatic Transfer Switch-225 Amps VT225ATS
Cutler Hammer Single-Phase Automatic Transfer Switch-200 Amps VT200ATS
Cutler Hammer Single-Phase Auto Transfer Switch - 
CUTLER HAMMER SHUNT TRIP CATSNT6P11K FOR "R" FRAME BREAKER
CUTLER HAMMER SGDN100 USPP SGDN100
CUTLER HAMMER SGDN100 NSPP SGDN100
Cutler Hammer Series C Industrial Circuit Breaker 
CUTLER HAMMER SERIEC C MOTOR CIRCUIT PROTECTOR HMCP150T4C 150A 3 POLE
Cutler Hammer Sensor E57MAL18T110B1 Proximity E1 
CUTLER HAMMER SAFTRONICS TRU-500-P 500HP 575V SOFT START 
CUTLER HAMMER SAFTRONICS TRU-350-P 250HP 480V SOFT START 
CUTLER HAMMER SAFETY SWITCH NON FCATDH361VWK
CUTLER HAMMER SAFETY SWITCH MAG STARTER CATA30DGTO 3PH
Cutler Hammer Safety Switch DH364FGK 200AMP
cutler hammer safety switch dh361uwk
cutler hammer safety switch dh361uwk
CUTLER HAMMER SAFETY SWITCH 60A 600V DH362FGK
Cutler Hammer Safety Switch 60 amp DH222NRK 3r
CUTLER HAMMER SAFETY SWITCH 30 AMP 240 VOLT 3/W S/N FUSIBLE DH221NGK
CUTLER HAMMER S811T18N3S USPP S811T18N3S
CUTLER HAMMER S811N37P3S USPP S811N37P3S
CUTLER HAMMER S801V42N3S USPP S801V42N3S
CUTLER HAMMER S801V42N3S USPP S801V42N3S
CUTLER HAMMER S801V36N3S USPP S801V36N3S
CUTLER HAMMER S801T30P3S USPP S801T30P3S
CUTLER HAMMER S801T30N3S MOTOR STARTER
CUTLER HAMMER S801T24N3S NSFP S801T24N3S
CUTLER HAMMER S801T24N3B USPP S801T24N3B
CUTLER HAMMER S801T18P3S USPP S801T18P3S
CUTLER HAMMER S801R10P3S USPP S801R10P3S
CUTLER HAMMER S801N66P3B NSFP S801N66P3B
Cutler Hammer S801N37N3S Soft Start/Motor Starter
CUTLER HAMMER S751L27N3S NSFP S751L27N3S
CUTLER HAMMER S751L09N3S NSFP S751L09N3S
CUTLER HAMMER S751L04N3S USPP S751L04N3S
CUTLER HAMMER S751L04N3S NSFP S751L04N3S
CUTLER HAMMER S57N11S51NM 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S57N11S51NM 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S51025 05KVA TRANSFORMER 1PH 
Cutler Hammer S48G11S02N
CUTLER HAMMER S40N14S51CEMM 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S40N14S51CEM 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S40N14S16N 15KVA TRANSFORMER 1PH 
CUTLER HAMMER S38N11S51N 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S38N11S51N 05KVA TRANSFORMER 1PH 
CUTLER HAMMER S2DN11S51N TRANSFORMER 50 KVA 
cutler hammer s29n11so1cu pri 208 sec 120/240 1 phase 
CUTLER HAMMER S20N11S51N NSFP S20N11S51N
CUTLER HAMMER S20N11S26N NSFP S20N11S26N
Cutler Hammer S20N11S16N Dry Type Distribution Transformer Ser A -  No Box
CUTLER HAMMER S20N11S10SS STAINLESS TRANSFORMER 
CUTLER HAMMER S20N11S03N NSPP S20N11S03N
CUTLER HAMMER S20N11S02N USPP S20N11S02N
CUTLER HAMMER S20N11S02N 2 KVA TRANSFORMER NEMA 3R 
CUTLER HAMMER S20N11S01N NSFP S20N11S01N
CUTLER HAMMER S20N11S01N 1 KVA TRANSFORMER NEMA 3R
CUTLER HAMMER S20K11S10N USPP S20K11S10N
CUTLER HAMMER S10N04A26N NSFP S10N04A26N
CUTLER HAMMER RWTCHR1 USPP RWTCHR1
CUTLER HAMMER RS-485PONI NSFP RS485PONI
Cutler Hammer RP6D16A120 CCCC DT III DS rating plug
Cutler Hammer RP6D16A120 CCCC DT III DS rating plug
CUTLER HAMMER RP6A16A120 DIGITRIP RMS TRIP UNIT 
CUTLER HAMMER RMS-310 USPP RMS310
CUTLER HAMMER RHF3090 USPP RHF3090
CUTLER HAMMER RFDN100 USPP RFDN100
CUTLER HAMMER RFDN100 NSPP RFDN100
CUTLER HAMMER RFA3125 CIRCUIT BREAKER 
CUTLER HAMMER RFA3050 USPP RFA3050
Cutler Hammer RFA3050 50 amp 3 pole breaker 
Cutler Hammer RFA3050 50 amp 3 pole breaker 
Cutler Hammer RFA3020 Circuit Breaker 3 pole 20 amp 
CUTLER HAMMER RF3070 CIRCUIT BREAKER S1-3
CUTLER HAMMER REVSTARTER COIL 110/120V 3 POLE OPEN TYPE AUX;2 45AMP SIZE 2 
CUTLER HAMMER Reversing Starter Sz 2 A50DG0B A50DGOB 3 PHASE 240V
CUTLER HAMMER Reversing Starter Sz 2 A210M2CAC 3 PHASE 575V
CUTLER HAMMER REVERSING STARTER AN56DN0 sz1 S11B
Cutler Hammer Reversing Starter A50DN0 Size 2
Cutler Hammer Reversing Contactor No C50DN3 A10DN0 Nema Size 2 Series B1 45 amp
Cutler Hammer Reversing Contactor CN55DN3 Size 1 
CUTLER HAMMER REVERSE STARTER A210M0CAC J
CUTLER HAMMER RESPONDER DRIVE GA210TC30A
Cutler Hammer Replacement Contact Kit 6-45-2 6452 American Made
Cutler Hammer Replacement Contact Kit 6-44-2 6442 American Made
Cutler Hammer Replacement Contact Kit 6-43-2 6432 American Made
Cutler Hammer Replacement Contact Kit 6-36-4 6364 American Made
Cutler Hammer Replacement Contact Kit 6-36-2 6362 American Made
Cutler Hammer Replacement Contact Kit 6-35-2 6352 American Made
Cutler Hammer Replacement Contact Kit 6-34-2 6342 American Made
Cutler Hammer Replacement Contact Kit 6-27-2 6272 American Made
Cutler Hammer Replacement Contact Kit 626B187G17 
Cutler Hammer Replacement Contact Kit 6-26-2 6262 American Made
Cutler Hammer Replacement Contact Kit 6-25-2 6252 American Made
Cutler Hammer Replacement Contact Kit 6-24-2 6242 American Made
Cutler Hammer Relay 6956ED45-1 NSN: 5945-01-261-14?72
CUTLER HAMMER RELAY 6141H129 28 VDC 100A NSN: 5925-00-561-73?29
CUTLER HAMMER RELAY 6046H46 MS25032-1 NOS 
Cutler Hammer Relay 6041H205A
CUTLER HAMMER RELAY 28 VDC 6046H46 MS25032-1 NOS
CUTLER HAMMER RELAY 100 AMP 6042H81 NSN: 5945-00-929-75?42
CUTLER HAMMER REFURBISHED 9-758-4 BRAKE COIL S2
CUTLER HAMMER REDUCED VOLTAGE STARTER
CUTLER HAMMER RD320T35W USPP RD320T35W
CUTLER HAMMER RD320T33W 1600 AMP CIRCUIT BREAKER
CUTLER HAMMER RD316TGW CIRCUIT BREAKER SELTRONIC GROUND FAULT TRIP UNIT
CUTLER HAMMER RD316T33W CIRCUIT BREAKER NIB
Cutler Hammer RD316T33W 1600 Amp With DitiTrip RMS 310 LS Circuit Breaker
CUTLER HAMMER RC06694 USPP RC06694
CUTLER HAMMER RBA4-FLTR NSFP RBA4FLTR
Cutler Hammer Rating Plug for ND Circuit Breakers 
CUTLER HAMMER R02-102578-9 NSPP R021025789
CUTLER HAMMER R02-102578-9 NSFP R021025789
CUTLER HAMMER QPHW3060H USPP QPHW3060H
CUTLER HAMMER QPGFEP1020 NSFP QPGFEP1020
CUTLER HAMMER QPGF-1030 USPP QPGF1030
CUTLER HAMMER QCHW2100 NSPP QCHW2100
CUTLER HAMMER QCGFEP2030T 30 AMP GROUND FAULT 
CUTLER HAMMER QCGF1030 NSFP QCGF1030
CUTLER HAMMER QCGF1020 NSFP QCGF1020
CUTLER HAMMER QC3080HT NSPP QC3080HT
CUTLER HAMMER QC3040HT NSPP QC3040HT
CUTLER HAMMER QC3040H NSPP QC3040H
Cutler Hammer QBHW3090HS shunt trip circuit breaker
Cutler Hammer QBHW3080H in Box
Cutler Hammer QBHW3070HS 70 AMP 3 POLE CIRCUIT BREAKER 
CUTLER HAMMER QBHW2125 CIRCUIT BREAKER 125A 2 POLE 120/240VAC
CUTLER HAMMER QBHW2100 USPP QBHW2100
Cutler Hammer QBHW1015 Circuit Breakers-Lot of 24 
CUTLER HAMMER QBGFEP2030W1 NSFP QBGFEP2030W1
CUTLER HAMMER QBGFEP2020 USPP QBGFEP2020
CUTLER HAMMER QBGFEP2020 USPP QBGFEP2020
CUTLER HAMMER QBGF2020 USPP QBGF2020
Cutler Hammer QBGF2020 Brand Breaker
CUTLER HAMMER PXD-MMG NSPP PXDMMG
CUTLER HAMMER PX8051A5BA NSFP PX8051A5BA
CUTLER HAMMER PX8051A5BA NSFP PX8051A5BA
CUTLER HAMMER PWN110 NSFP PWN110
CUTLER HAMMER PUM-1 NSFP PUM1
CUTLER HAMMER PTX0803Y-101I USPP PTX0803Y101I
CUTLER HAMMER PTX080-3Y101 IN A BOX
CUTLER HAMMER PTX080 TRANSIENT VOLTAGE SURGE SUPPRESSOR 3 PHASE FPTX080-NN400
CUTLER HAMMER PSS55D POWER SUPPLY 55 WATT 600 VAC - 1 YEAR RETURN POLICY
CUTLER HAMMER PSS55A USPP PSS55A
Cutler Hammer PSS55A PSS1010A Eaton Free WW Ship 
CUTLER HAMMER PSHFD020-SP/HU?PF44606 BREAKER SWITCH NNB
CUTLER HAMMER PSG120E NSFP PSG120E
CUTLER HAMMER PS256A-05B1 POWER SUPPLY CONVEYOR
CUTLER HAMMER PS256A-04B1 NSPP PS256A04B1
Cutler Hammer Proximity Switch Inductive Tubular E57RAL18A2B1 5772 D
CUTLER HAMMER PROXIMITY SWITCH E58-CAL-18A2R2 20-264 VAC
CUTLER HAMMER PROXIMITY SWITCH E58-CAL-18A2R2 20-264 VAC
Cutler Hammer Proximity Switch E57MAL12A2B1 2wire 3744
Cutler Hammer Proximity Switch E53KBL30A2E Series A1 NIB
Cutler Hammer proximity switch E51CNP2
CUTLER HAMMER PROGRAMMING CLOCK TIMER A-909-00 & 03 10A 110V 5A 220V C-2311
CUTLER HAMMER PRL4B NSFP PRL4B
CUTLER HAMMER PRL3A NSPP PRL3A
CUTLER HAMMER PRL2 USPP PRL2
Cutler Hammer PRL1A 225 Amp M3P Panelboard Interior 
Cutler Hammer PRL1 100 Amp Main Lug 3 Phase 120/208 Volt Panelboard - E53
Cutler Hammer Pow-R-Line C PRL4 Panelboard Nema 3R 800amp 480V 
CUTLER HAMMER POWER UNIT SVX050A2-5A4B1
CUTLER HAMMER POWER UNIT SVX050A2-5A4B1
CUTLER HAMMER POWER UNIT C10D-1 C10DX
CUTLER HAMMER POWER SUPPLY CATPSS55A 24VDC - 115VAC
Cutler hammer Power Line Filter MAGSHWCH120N05X?S NIB
CUTLER HAMMER POWER CONVERSION EQUIPMENT SV9030AS-6M0B0?0
CUTLER HAMMER POWER CONVERSION EQUIPMENT SV9030AS-6M0B0?0
Cutler Hammer Pow R Way Tap Box 2000 Amp 600 Volt 3 PH
Cutler Hammer Pneumatic Timer Attachment On Delay D26MTE 
CUTLER HAMMER PNEUMATIC TIMER 10337H292B In Box
CUTLER HAMMER PNEUMATIC TIMER 10337H292B 
CUTLER HAMMER PNEUMATIC TIMER 10337H178-66EO 110-120v OPEN ENCLOSURE TYPE PNI
CUTLER HAMMER PM2A USPP PM2A
CUTLER HAMMER PM 500/1500 AB REMOTE I/O LINK
Cutler Hammer PLC D200PR4C CPU good in condition for industry use
CUTLER HAMMER PLC D200-MOD-1200R good in condition for industry use
CUTLER HAMMER PLC D200EZM100 good in condition for industry use
Cutler Hammer photolectric head detector E51DC1
Cutler Hammer Photoelectric Switch E51SAL E51RAP3 
Cutler Hammer Photoelectric Source Head 1161A-100 60 Series 5608
Cutler Hammer Photoelectric Sensor Head 1382B-6501
Cutler Hammer Photoelectric Sensor E58CAL18T110R2 
Cutler Hammer Photoelectric Sensor E58-30DPS280-G?LP
CUTLER HAMMER PHOTOELECTRIC POLARIZED REFLEX 1451B-6507 SER B2 1451B6507
Cutler Hammer Photoelectric Detector 1261B-100 9 FT Cable 5329
Cutler Hammer Photoelectric Delay Timer E66PMT Ser A1
CUTLER HAMMER PHOTOELECTRIC CONTROLLER 10-22 L-7 K
Cutler Hammer Photoelectric 4 Pin E58-30TS250-HA?P 4919
Cutler Hammer Photoelectric 13104AQD03 WMicro Connector 5586 
CUTLER HAMMER PHOTO SENSOR E51DP2 with E51SBL SerC
Cutler Hammer Photo Electric Sensor E58-30DPA280-H?L Harsh Duty 280mm NIB
Cutler Hammer Photo Electric Sensor E58-30DP150-HL?P Harsh Duty 150mm 
Cutler Hammer PHLD3600F LD3600F A1L4LPK wA3X4PK LT3400T 400 Amp
Cutler Hammer PH6E-3 Series A PH Panelboard Breaker Kit
CUTLER HAMMER PH6E-3 NSFP PH6E3
CUTLER HAMMER PGGLOBLPMNT3D7?36 USPP PGGLOBLPMNT3D7?36
CUTLER HAMMER PGGLOBLPMNT3 D73?6 PGGLOBLPMNT3D7?3?6 Powers Up Sold for Parts
CUTLER HAMMER PGGLOBLPMNT2 INDUSTRIAL COMPUTER XLNT
CUTLER HAMMER PD6DO8A040 USPP PD6DO8A040
Cutler Hammer PD6D40A400 Digitrip RMS Rating Plug 
CUTLER HAMMER PD6D06A080 USPP PD6D06A080
Cutler Hammer Panelmate Pro L7 1175T PMP 1100 ""
CUTLER HAMMER PANELMATE POWER PRO 39STHX PM 3000 POWER SERIES
CUTLER HAMMER PANELMATE POWER PRO 3985AT PMPP 3000
CUTLER HAMMER PANELMATE POWER PRO 3985AT PMPP 3000
CUTLER HAMMER PANELMATE POWER PRO 1785T PMPP 1700 CUTLER-HAMMER
CUTLER HAMMER PANELMATE POWER PRO 1785T PMPP 1700 24VDC 11A 23W
CUTLER HAMMER PANELMATE POWER PRO 1785K PMPP 1700 24VDC 11A 23W
Cutler Hammer Panelmate 91-00992-00 LCD Upgrade Kit
Cutler Hammer Panelmate 91-00935-00 LCD Upgrade Kit
Cutler Hammer Panelmate 38ST PM 3000 POWER SERIES 92-01180-02
CUTLER HAMMER PANELMATE 1785T PMPS 1700 ""
CUTLER HAMMER PANELMATE 1511 1511-00 87-01482-00 FACTORY SEALED
CUTLER HAMMER PANELMATE 1175T PMP 1100 ""
Cutler Hammer Panelboard switch twin 60 amp FDPWT3222R 150
Cutler Hammer Panel Mate 542VM 
CUTLER HAMMER PAD4L LG 4 POLE PLUG-IN ADAPTER IEC ONLY
CUTLER HAMMER PAD4J JG 4 POLE PLUG-IN ADAPTER
CUTLER HAMMER PAD33 NSFP PAD33
CUTLER HAMMER PAD13D NSFP PAD13D
CUTLER HAMMER P2AL4C2-42 NSPP P2AL4C242
CUTLER HAMMER OVERLOAD RELAYS 18-24 A FLC LOT QTY 3 C316FNA3S
CUTLER HAMMER OVERLOAD RELAY CATC306GN3B 3 POLE OPEN TYPE 75AMPS 
CUTLER HAMMER OVERLOAD RELAY C306NN3
Cutler Hammer Overload Relay C306DN3B 3P 32 A 3730
Cutler Hammer overload relay C300KA1 or C300KA2 rating B600
CUTLER HAMMER OPTD3 NSFP OPTD3
CUTLER HAMMER OPTC6 USPP OPTC6
Cutler Hammer Operator Interface D850MPM
Cutler Hammer Oiltight Master Test E29MT1 Pilot Light
Cutler Hammer Off Delay Timer D87XDL30
Cutler Hammer Off Delay Timer D87XDL30
Cutler Hammer NW3800T33W 800amp 3pole breaker rating plugs available 690V
CUTLER HAMMER NS360900A USPP NS360900A
CUTLER HAMMER NQB-A250 SWITCH BREAKER
CUTLER HAMMER NQB-A250 SWITCH BREAKER
CUTLER HAMMER NON-REVERSING OR REVERING CONTACTOR 3 PHASE CATV200M4CJC 
CUTLER HAMMER NON-REVERSING CONTACTOR C832KN9A
CUTLER HAMMER Non-Auto Switch LDB3600K LDB-K 600A LDB
CUTLER HAMMER NON REVERSING STARTER MODEL J CATA200MOBR NIB
CUTLER HAMMER Non Rev Starter A200MACAC A200 Model J 00
CUTLER HAMMER NON FDISCONNECT S/S CATDH361UWK 
CUTLER HAMMER NO A832JN2 SERIES A1
Cutler Hammer NH361200 Amp Breaker
Cutler Hammer NG31200 series C generator circuit breaker 1200amps 3pole 600VAC
Cutler Hammer Neutral Current Sensor CTL600 iN BoX
CUTLER HAMMER Neutral Current Sensor CTK400 
Cutler Hammer Network Adaptor Module DeviceNet to QCPort D77D-DNA
CUTLER HAMMER NEMA STARTER RELAY ECN0511AAA NSN: 6110-00-964-06?67
Cutler hammer nema size3 starter inclosed
Cutler hammer nema size3 starter inclosed
Cutler- Hammer nema size 5 starter w enclosier
Cutler Hammer NEMA Size 5 Starter AN16SN0 AN16SNO
Cutler Hammer NEMA Size 5 A10GNO A1 480 V Starter
Cutler Hammer Nema Size 5 6002H515A Motor Contactor 
Cutler Hammer NEMA Size 4 Starter A10FGO 120 Starter A1
Cutler Hammer NEMA Size 4 Contactor CN15NN3 
Cutler Hammer NEMA Size 4 A10FNO A1 Starter
Cutler Hammer Nema size 4 135 AMPS Seies B1
CUTLER HAMMER NEMA SIZE 3 Starter Max 3 PH Ratings 90AMP
CUTLER HAMMER NEMA SIZE 3 Starter Max 3 PH Ratings 90AMP
Cutler Hammer NEMA Size 3 Starter A10EN0 110v Coil 
Cutler Hammer NEMA Size 3 Starter 8536 120v coil Clean Take Out
Cutler Hammer NEMA Size 1 Starter No A10CN0 Series A1 Enclosure Included 
Cutler Hammer NEMA Size 1 Starter A10CG0 120V Coil
Cutler Hammer NEMA 4X Magnetic Starter SIZE 0 3 Pole A10BNO
CUTLER HAMMER NE-6938 USPP NE6938
CUTLER HAMMER ND3800T33W 800 AMP CIRCUIT BREAKER
CUTLER HAMMER ND312WK USPP ND312WK
CUTLER HAMMER ND312WK USPP ND312WK
CUTLER HAMMER ND312T36W USPP ND312T36W
Cutler Hammer ND312T35W Circuit Breaker 1200A 1200 
Cutler Hammer ND312T35W 1200A Circuit Breaker - 
CUTLER HAMMER ND312T35W 1200A 3P NO BOX BREAKER
Cutler Hammer ND 312T 33W 1200 Amp Circuit Breaker
Cutler Hammer ND 312T 33W 1200 Amp 600 V 3 Pole Circuit Breaker
CUTLER HAMMER NC31200WK USPP NC31200WK
Cutler Hammer NB31200F NB frame only 3 pole 1200amp 600VAC 
Cutler Hammer Navy 3 Pole 500 Volt Circuit Breaker AQB A101
CUTLER HAMMER N501CS1H3A NSFP N501CS1H3A
CUTLER HAMMER N101ES3M3A NSFP N101ES3M3A
CUTLER HAMMER N101BS0G3A NSFP N101BS0G3A
CUTLER HAMMER MVX010A0-4 NSFP MVX010A04
CUTLER HAMMER MVX002A0-4 USPP MVX002A04
CUTLER HAMMER MVX002A0-4 NSPP MVX002A04
CUTLER HAMMER MVX002A02 USPP MVX002A02