Todays deals on Air Circuit?

SIEMENS 5000A Air Circuit Breaker 3WL1350-4AS32-1AA2 $5,999.00

Air Gage Co Circuit Board Column Input Card 01632-00, 0163200, O1632-OO, O1632OO $5,000.00

Cutler-Hammer Complete Air Circuit Breaker PN#315C574G20 Navy Type AQB-A250 $3,250.00

WESTINGHOUSE AOB-LF250 NAVAL AIR CIRCUIT BREAKER (D7) $825.00

GOULD AIR CIRCUIT BREAKER ETN1048 NSN: 5925-00-817-7861 $500.00

LABEL AIRE 74-647-90A CIRCUIT CONTROL CARD USED WORKING CONDITION $345.00

MULTI TAP CT CURRENT TRANSFORMER FOR WESTINGHOUSE DB25 AIR CIRCUIT BREAKER $300.00

BUSSMAN KAF 800 Air Circuit Breaker Fuses 600V 800 Amp $150.00

ALLEN BRADLEY 802T-PN OILTIGHT LIMIT SWITCH AIR OPERATED 2 CIRCUIT SERIES E NIB $126.00

WESTINGHOUSE DB-25 AIR CIRCUIT BREAKER ARC CHUTE $100.00

SQUARE D KDL32200 3 POLE 200 AMP 240V CIRCUIT BREAKER, AIR: 25KA $99.99

AIR PAX CIRCUIT BREAKER PART# AP16-1RC-5950-002 (5189629-002) $95.00

Lot of 10 Square D QOB120VH 1-Pole 20 Amp Circuit Breaker 22K AIR $49.99

Air Breeze 20 AMP circuit Breaker $35.50

NEW CIRCUIT BOARD FOR TOHNICHI ACLS SERIES AIR TORQUE $24.99

UND. LAB INC. List Circuit Breaker 6 pole Unit LM-2234 AIR PAX 209 240VAC $14.99

Air Pax LELK1-1-52-60.0-T-01-V Circuit Breaker $14.99

LA3-R2 Interrupt Circuit Type Air Delay Head Contactor $16.71

Triple Pole Rated Current 63A Mini Air Circuit Breaker $16.00

AC 400V Overload Protector Mini Air Circuit Breaker $15.44

Triple Pole Rated Current 63A Mini Air Circuit Breaker $14.51

Blue Switch Rated Current 63A Mini Air Circuit Breaker $14.33

AC 400V Overload Current Protector Air Circuit Breaker $14.29

Blue Switch Rated Current 63A Mini Air Circuit Breaker $14.27

AC 400V Overload Current Protector Air Circuit Breaker $14.26

Triple Pole Rated Current 63A Mini Air Circuit Breaker $14.26

AC 400V Overload Current Protector Air Circuit Breaker $14.26

Triple Pole Rated Current 63A Mini Air Circuit Breaker $14.10

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Control Circuit AC Contactor Air Timer Delay LA3-R2 $13.86

Blue Switch Rated Current 63A Mini Air Circuit Breaker $13.74

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AC 400V Rated Current 20A MCB Air Circuit Breaker $13.70

LA3-R2 Interrupt Circuit Type Air Delay Head Contactor $13.55

Control Circuit AC Contactor Air Timer Delay LA3-R2 $13.52

AC 400V Overload Protector Mini Air Circuit Breaker $13.52

LA3-R2 Interrupt Circuit Type Air Delay Head Contactor $13.52

Control Circuit AC Contactor Air Timer Delay LA3-R2 $13.51

AC 400V Overload Protector Mini Air Circuit Breaker $13.51

AC 400V Overload Protector Mini Air Circuit Breaker $13.51

Triple Pole Rated Current 63A Mini Air Circuit Breaker $13.50

AC 400V Overload Protector Mini Air Circuit Breaker $13.50

AC 400V Overload Protector Mini Air Circuit Breaker $13.49

AC 400V 20A Triple Pole Air Circuit Breaker DZ47-63 $13.49

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AC 400V Rated Current 20A MCB Air Circuit Breaker $13.41

AC 400V Rated Current 20A MCB Air Circuit Breaker $13.40

AC 400V Overload Protector Mini Air Circuit Breaker $13.38

AC 400V Rated Current 20A MCB Air Circuit Breaker $13.38

LA3-R2 Interrupt Circuit Type Air Delay Head Contactor $13.08

LA3-R2 Interrupt Circuit Type Air Delay Head Contactor $13.08

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AC 400V 20A Triple Pole Air Circuit Breaker DZ47-63 $12.99

Control Circuit AC Contactor Air Timer Delay LA3-R2 $12.99

AC 400V 20A Triple Pole Air Circuit Breaker DZ47-63 $12.98

AC 400V Overload Protector Mini Air Circuit Breaker $12.97

AC 400V Overload Protector Mini Air Circuit Breaker $12.97

AC 400V 20A Triple Pole Air Circuit Breaker DZ47-63 $12.97

Control Circuit AC Contactor Air Timer Delay LA3-R2 $12.61

Triple Pole Rated Current 63A Mini Air Circuit Breaker $12.35

Blue Switch Rated Current 63A Mini Air Circuit Breaker $12.34

Triple Pole Rated Current 63A Mini Air Circuit Breaker $12.33

AC 400V Overload Protector Mini Air Circuit Breaker $12.04

Shortcircuit Protector 2 Pole MCB Air Circuit Breaker $12.01

SQUARE D CIRCUIT BREAKER 20 AMP 120/240V QOB120VH 22K AIR USED ELECTRIC 979ER23 $12.00

AC 400V Overload Protector Mini Air Circuit Breaker $11.76

AC 400V 20A Triple Pole Air Circuit Breaker DZ47-63 $11.76

Rated Current 20A 2 Pole Switchgear Air Circuit Breaker $10.04

SQUARE D CIRCUIT BREAKER 20 AMP 120/240VAC QOB120 10K AIR USED ELECTRIC 981ER23 $9.99

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SQUARE D CIRCUIT BREAKER 30 AMP 120/240VAC QOB130 10K AIR USED ELECTRIC 978ER23 $9.99

DZ47-63 C20 AC 400V Overload Current Protector Air Circuit Breaker $9.88

Rated Current 20A 2 Pole Switchgear Air Circuit Breaker $9.82

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Shortcircuit Protector 2 Pole MCB Air Circuit Breaker $9.69

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DZ47-63 C20 AC 400V Overload Current Protector Air Circuit Breaker $9.48

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CS289 Manu:CS Encapsulation:DIP-14,20mA Air-Core Tachometer Drive Circuit $5.00

Shortcircuit Protector 2 Pole MCB Air Circuit Breaker $8.68

Shortcircuit Protector 2 Pole MCB Air Circuit Breaker $8.65

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DZ47-63 C20 AC 400V Overload Current Protector Air Circuit Breaker $8.62

Single Pole Rated Current 16A Mini Air Circuit Breaker $8.56

Single Pole Rated Current 63A Air Circuit Breaker New $8.53

Single Pole Rated Current 63A Air Circuit Breaker New $8.53

Air Compressor Circuit Breaker Overload Protector AC15A $7.61

Air Compressor Circuit Breaker Overload Protector AC15A $7.60

Rated Current 63A AC 400V One Pole Air Circuit Breaker $6.17

Single Pole Rated Current 63A Air Circuit Breaker New $6.06

Air Circuit Questions

Tell Me About The Types Of Industrial Circuit Breakers

Industrial circuit breakers are electrical devices used to break the electrical circuit during overload. It is used in commercial and residential purposes as part of a safety process. Electric circuit breakers are automatically-operated switches to protect the electrical circuit from damage.

Several circuit breakers are classified according to voltage class, construction type, structural features and interrupting type. Under the voltage class, three types of electric circuit breakers can be made. These are the low voltage, medium voltage and high voltage circuit breakers.

The low voltage industrial circuit breakers, containing less than 1000 VAC, are used commonly in residential, commercial and industrial application. There are two sub-types of low voltage circuit breakers, namely the miniature circuit breaker, and the molded case circuit breaker.

The miniature circuit breaker or MCB has a rated current of not more than 100A. It can be operated by thermal or thermal-magnetic operation. However, its trip characteristics are not adjustable.

The molded case circuit breaker or MCCB has a rated current of up to 1000A. Like the MCB, this too can be operated by thermal or thermal-magnetic operation. Its trip current may be adjustable in larger ratings.

Low voltage circuit breakers are made for direct current applications or DC. They have electrical motor operators, which can be opened and closed under remote control. They can be mounted in multi-tiers in low voltage switchboards.

The medium voltage industrial circuit breakers are rated between 1 and 72 kV. They may be assembled into metal-enclosed switchgear line up for indoor. They can also be installed in individual components for outdoors. The characteristics for medium voltage are defined by international standards such as International Electrotechnical Commission 62271.

There are three sub-types under medium voltage. These are vacuum circuit breakers, the air circuit breakers, and the SF6 circuit breakers. The SF6 circuit breaker extinguishes the arc in a chamber of sulfur hexafluoride gas.

The vacuum circuit breakers have a rated current of up to 3000A. They interrupt the electric current by creating and extinguishing the arc inside a vacuum chamber Vacuum industrial circuit breakers are used for voltages up to 35,000 V and tend to last longer.

The Air circuit breakers have a rated current of 10,000A. The trip characteristic is adjustable, which includes configurable trip delays and thresholds. This breaker is used for main power distribution in large industrial plant.

The high voltage circuit breakers are used to protect and control the electrical power transmission networks. Its rated current when used in power transmission is believed to be 72.5 kV, or even higher.

Typically, high voltage circuit breakers are solenoid-operated having current sensing protective relays running through current transformers. They are available with current ratings of up to 765 kV, and are used on transmission systems.

The other two types of industrial circuit breakers are magnetic and thermal-magnetic. The magnetic breakers use a solenoid electromagnet. Its inherent pulling force increases with the electric current. The thermal magnetic circuit breakers are used in distribution boards. They use electromagnet and bimetallic strip to trip the breaker.

All industrial circuit breakers share common operating features. They are set apart from each other in terms of voltage class, current rating and the type of circuit breakers. They are expected to detect faulty conditions.

About the Author

Go to http://www.relectric.com/ and get help finding your industrial circuit breaker. We carry a large supply of breakers. Can you use a rebuilt circuit breaker? Use our experts to help get the right breaker. Visit us at Industrial circuit breaker to find the right circuit breaker.

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