Circuit Breakers

Eaton BR thermal magnetic circuit breaker,Type BR 1-Inch plug-on circuit breaker,20 A,10 kAIC,Single-pole,120/240V,BR,#14-4 AWG Cu/Al,Q1,BR,Type BR loadcenters Molded Case Circuit Breakers
Mini circuit breaker, Homeline, 20A, 1 pole, 120/240VAC, 10kA AIR, standard type, plug in, UL Miniature Circuit Breakers
Multi 9 - C60BP - MCB - 1P - 20 A - C Curve - 277 V - 10 kA - UL 489 Low Voltage Circuit Breakers
Branch Circuit Breaker, GFCI 1-Pole 20A 120V, 10Ka Interrupt Rating GFCI Circuit Breakers
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP 1-pole 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard UL Listed, HACR Rated Voltage Rating 120 Amperage Rating 20 Interrupt Rating 10 Number Of Poles 1 Operating Temperature 40
MFR: Siemens
MFR #: MP120
UPC: 040892518894
Item #: 51388
Available to Order
$47.85 each
Availability
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating 120/240 Amperage Rating 30 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP230
UPC: 040892518962
Item #: 115856
Available to Order
$120.37 each
Availability
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers AFCI - Combo AFCI 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BRKR 15A 1P 120V 10K AFCI WIREGUIDE
MFR: Siemens
MFR #: QA115AFCWG
UPC: 804766152832
Item #: 501121
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Discontinued
Siemens
BREAKER 20A 2P 120/240V 10K MP-T
MFR: Siemens
MFR #: MP220
UPC: 040892518948
Item #: 115179
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating 120/240 Amperage Rating 40 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP240
UPC: 040892518979
Item #: 116665
Available to Order
$120.37 each
Availability
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP 1-pole 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating120 Amperage Rating 15 Interrupt Rating 10 Number Of Poles 1 Operating Temperature 40
MFR: Siemens
MFR #: MP115
UPC: 040892518887
Item #: 49262
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 80 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP280
UPC: 040892279900
Item #: 67252
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 225A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B225
UPC: 783643193819
Item #: 222823
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Discontinued
Siemens
Low Voltage Molded Case Circuit Breakers Panelboard Mounting 240V GFCI Circuit Breakers - 2-Pole, GFCI - BLF, 10KAIC, 120/240VAC are Circuit ProtectionMolded Case Circuit Breakers. Sub Brand N/A Type BLF/GFCL Special Features N/A Application Electrical Distribution Standard UL 943 Voltage Rating 120/240V Amperage Rating 30A Load Rating N/A Frequency Rating N/A Phase N/A Frame N/A Trip Type N/A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: BF230
UPC: 783643274006
Item #: 33049
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating 120/240 Amperage Rating 15 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP215
UPC: 040892518931
Item #: 90600
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 2-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 50A 2P 120/240V 10K QPF GFCI5MA
MFR: Siemens
MFR #: QF250
UPC: 783643273764
Item #: 133821
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Siemens
OEZ-LK1496-ST400
MFR: Siemens
MFR #: 3VA5330-6EC36-0AA0
UPC: 804766802928
Item #: 1508041
Available to Order
$6017.33 each
Availability
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Siemens
OEZ-LK1496-ST250
MFR: Siemens
MFR #: 3VA5220-6EC36-0AA0
UPC: 804766717420
Item #: 1508040
Available to Order
$3715.90 each
Availability
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Siemens
OEZ-LK1496-ST400
MFR: Siemens
MFR #: 3VA5340-7EC36-0AA0
UPC: 804766803383
Item #: 1495213
Available to Order
$7769.77 each
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Siemens
LOW VOLTAGE 3VA UL MOLDED CASE CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP UNIT. 3VA52 FRAME WITH MEDIUM (CLASS H) BREAKING CAPACITY. 200A 3-POLE (25KAIC AT 600V) (65KAIC AT 480V). TM230 TRIP UNIT WITH FIXED Ir ADJUSTABLE Ii. SPECIAL FEATURES WITHOUT LUGS. 100 PERCENT RATED. DIMENSIONS (W x H x D) IN 4.1 x 7.3 x 4.2.
MFR: Siemens
MFR #: 3VA5220-6EC31-2AA0
UPC: 195125355576
Item #: 1480288
Available to Order
$3674.73 each
Availability
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Discontinued
Eaton
Type CH 3/4-inch Standard Circuit Breaker
MFR: Eaton
MFR #: CH215
UPC: 782113101729
Item #: 944564
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Discontinued
Siemens
LOW VOLTAGE PANELBOARD MOUNT EG FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED NEB FRAME WITH STANDARD BREAKING CAPACITY. 100A 2-POLE (22KAIC AT 600Y/347V) (35KAIC AT 480V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOAD SIDE LUGS ONLY (TA1EG10) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D) IN 2 x 5.5 x 3.
MFR: Siemens
MFR #: NEB2B100B
UPC: 783643558465
Item #: 1111444
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Discontinued
Siemens
LOW VOLTAGE PANELBOARD MOUNT EG FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED HEB FRAME WITH HIGH BREAKING C APACITY. 50A 3-POLE (25KAIC AT 600Y/347V) (65KAIC AT 480V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOAD SIDE LUGS ONLY (TA1EG10) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D) IN3 x 5.5 x 3.
MFR: Siemens
MFR #: HEB3B050B
UPC: 783643559028
Item #: 95737
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Discontinued
Siemens
LOW VOLTAGE PANELBOARD MOUNT EG FRAME CIRCUIT BREAKER WITH THERMAL - MAGNETIC TRIP. UL LISTED NEB FRAME WITH STANDARD BREAKING CAPACITY. 15A 3-POLE (22KAIC AT 600Y/347V) (35KAIC AT 480V). SPECIAL FEATURES MOUNTS ON PANELBOARD, LOADSIDE LUGS ONLY (TA1EG10) WIRE RANGE 8 - 1/0 AWS (CU/AL). DIMENSIONS (W x H x D)IN 3 x 5.5 x 3.
MFR: Siemens
MFR #: NEB3B015B
UPC: 783643558502
Item #: 173000
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Discontinued
Siemens
CIRUIT-BREAKER VL-600A T/M 3P 65KA W/LUGS
MFR: Siemens
MFR #: HLK3B600L
UPC: 040892599473
Item #: 1125543
Available to Order
$44179.16 each
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Discontinued
Siemens
LOW VOLTAGE VL UL LISTED MOLDED CASE CIRCUIT BREAKER WITH ELECTRONIC TRIP UNIT (ETU). BREAKER HNG FRAME WITH HIGH BREAKING C APACITY. 1200A 3-POLE (35KAIC AT 600V) (65KAIC AT 480V). ETU555 LSI NON INTERCHANGEABLE TRIP. EXTERNAL CONNECTION LINE AND LOAD LUGS (TA4NG500) WIRE RANGE 1/0AWG - 500KCMIL (CU/AL). DIMENSIONS (W x H x D) IN 9 x 16 x 6.2.
MFR: Siemens
MFR #: HNX3T120L
UPC: 040892796872
Item #: 1151085
Available to Order
$54990.48 each
Availability
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type QP/MP Special Features Auxiliary Switch 120V Application Electrical Distribution Standard UL 489 Voltage Rating 120/240V Amperage Rating 110A Trip Range Thermal Magnetic Interrupt Rating 10 AIC Number Of Poles 2P
MFR: Siemens
MFR #: Q211001
UPC: 662643733068
Item #: 607054
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Discontinued
Siemens
LOW VOLTAGE VL UL LISTED MOLDED CASE CIRCUIT BREAKER WITH ELECTRONIC TRIP UNIT (ETU). BREAKER HFG FRAME WITH HIGH BREAKING C APACITY. 250A 3-POLE (18KAIC AT 600Y/347V) (65KAIC AT 480V). ETU555 LSI NON-INTERCHANGEABLE TRIP UNIT. EXTERNAL CONNECTION LINE AND LOAD LUGS (TAW1FG350) WIRE RANGE 4AWG - 350KCMIL (CU/AL). DIMENSIONS (W x H x D) IN 4.1 x 7.3 x 3.4.
MFR: Siemens
MFR #: HFK3T250L
UPC: 887621130510
Item #: 1122321
Available to Order
$38734.38 each
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Discontinued
Siemens
LOW VOLTAGE VL UL LISTED MOLDED CASE CIRCUIT BREAKER WITH ELECTRONIC TRIP UNIT (ETU). BREAKER HNG FRAME WITH HIGH BREAKING C APACITY. 1200A 3-POLE (35KAIC AT 600V) (65KAIC AT 480V). ETU555 LIG INTERCHANGEABLE TRIP UNIT. EXTERNAL CONNECTION LINE AND LOAD LUGS (TA4NG500) WIRE RANGE 1/0AWG - 500KCMIL (CU/AL). DIMENSIONS (W x H x D) IN 9 x 16 x 6.2.
MFR: Siemens
MFR #: HNG3W120L
UPC: 040892796216
Item #: 1104174
Available to Order
$60271.95 each
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Discontinued
Siemens
AFCI Combo Type (Gen 2) - 1 Pole, 15A, 10kA IR
MFR: Siemens
MFR #: MPA115AFC
UPC: 887621216054
Item #: 603251
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 2-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. BREAKER 30A 2P 120/240V 10K QPF GFCI5MA
MFR: Siemens
MFR #: QF230
UPC: 783643148567
Item #: 126891
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Discontinued
Siemens
BREAKER 15/20A 1P 120V 10K MH-T DUPLEX
MFR: Siemens
MFR #: MP1520
UPC: 040892521993
Item #: 640963
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 110A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B110
UPC: 783643201088
Item #: 762517
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 90 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP290
UPC: 040892280005
Item #: 44223
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 225A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ22B225
UPC: 783643193758
Item #: 214697
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Discontinued
Hubbell Wiring Device - Kellems
BREAKER 15A 1P 120V 10K MP-GT GFCI 5MA
MFR: Hubbell Wiring Device-Kellems
MFR #: NPS1W
UPC: 040892007428
Item #: 1579769
In Stock -
$9.57 each
Availability
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 175A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B175
UPC: 783643193796
Item #: 151001
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breakers Non-reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 150 Interrupt Rating 10 Number Of Poles 2
MFR: Siemens
MFR #: MPD2150
UPC: 040892006421
Item #: 183025
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 70 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP270
UPC: 040892279801
Item #: 93186
Available to Order
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 125 AMP And 225 AMP Single Phase Output WMM, WML, WMT meter stacks Standard HACR Rated Voltage Rating 120/240 Amperage Rating 125 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40
MFR: Siemens
MFR #: MP2125
UPC: 040892281194
Item #: 3686
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Discontinued
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 28 - 40 Amps Frame Size S2 Screw Terminals UL File E47705 in Vol. 7 (1) Sec. 7 (12)
MFR: Siemens
MFR #: 3RV1031-4FB10
UPC: 754554626574
Item #: 562722
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Discontinued
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER ACCESSORY. COPPER BODY LUG FOR 2/3-POLE 1200A - 2000A PD AND RD FRAME BREAKER. WIRE RANGE 300 - 600KCMIL (CU/AL) - 5 BARREL LUG. SUITABLE FOR LINE AND LOAD SIDES. SUITS VL PG FRAME WHEN USING MOUNTING BASE (MBPG1600 OR MBPG1601). SINGLE LUG.
MFR: Siemens
MFR #: TC5R600
UPC: 783643244634
Item #: 448146
Available to Order
$1524.50 each
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Discontinued
Siemens
Low Voltage Molded Case Circuit Breakers Sentron Molded Case Circuit Breakers - MCCB Connection Accessories are Circuit Protection Molded Case Circuit Breakers. BREAKER QJ AL/CU LUGS 1W 300KCMIL
MFR: Siemens
MFR #: TA1Q300
UPC: 783643122703
Item #: 46522
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 150A 2-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ22B150
UPC: 783643193727
Item #: 102121
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 125A 3-POLE (10KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJ23B125
UPC: 783643193772
Item #: 146193
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Discontinued
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter Starter with 3RV1928-1H adapter Type E Self-protected GroupTap Conductor Protector Trip Class 10, 5.5 - 8 Amps Frame Size S0 Screw Terminals UL File E47705 in Vol.7(1) Sec.9 (11)
MFR: Siemens
MFR #: 3RV1021-1HA10
UPC: 754554409252
Item #: 172099
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Main Breakers - Branch Main Breaker Reversible are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MD-T Voltage Rating 120/240 Amperage Rating 200 Interrupt Rating 22 Number Of Poles 2
MFR: Siemens
MFR #: MPD2200R
UPC: 040892006483
Item #: 21514
Available to Order
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Discontinued
Siemens
LOW VOLTAGE MOLDED CASE CIRCUIT BREAKER WITH TRIP FREE MECHANISM. QJ FRAME STANDARD 40C BREAKER. 200A 3-POLE (22KA AT 240V). SPECIAL FEATURES NO LUGS INSTALLED.
MFR: Siemens
MFR #: QJH23B200
UPC: 783643193901
Item #: 61406
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 3-Pole, 240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Application For Use In 100 AMP, 3-Phase Output WML Meter Stacks Only Standard HACR Rated Voltage Rating 240 Amperage Rating 100 Interrupt Rating 10 Number Of Poles 3 Operating Temperature 40
MFR: Siemens
MFR #: MP3100
UPC: 040892237603
Item #: 371909
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Circuit Breakers GFCI - Personnel Protect 1-pole plug-on 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Replaced by US2 QF115A
MFR: Siemens
MFR #: QF115
UPC: 783643148574
Item #: 47653
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Discontinued
Siemens
LOW VOLTAGE SENTRON MOLDED CASE CIRCUIT BREAKER WITH SOLID STATE SENSITRIP III ELECTRONIC TRIP UNIT. ASSEMBLED STANDARD 40 DEG C BREAKER LD FRAME WITH FUSELESS CURRENT LIMITING BREAKING CAPACITY. 500A 3-POLE (100KAIC AT 600V) (150KAIC AT 480V). NON-INTERCHANGEABLE LIG TRIP UNIT. SPECIAL FEATURES NO LUGS INSTALLED. DIMENSIONS (W x H x D) IN 7.50 x 17.9 x 4.00.
MFR: Siemens
MFR #: SCLD69500G
UPC: 783643217652
Item #: 356802
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Discontinued
Siemens
Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP 1-pole 10k are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating120 Amperage Rating 30 Interrupt Rating 10 Number Of Poles 1 Operating Temperature 40
MFR: Siemens
MFR #: MP130
UPC: 040892518917
Item #: 144757
Available to Order
$47.85 each
Availability
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Discontinued
Siemens
Motor Starter protector MSP, IEC, SIRIUS Component in Group Installation ManualCombination Starter with 3RT1946-4GA07 adapter Type E Self-protected Group Tap Conductor Protector Trip Class 20, 45 - 63 Amps Frame Size S3 Screw Terminals ULFile E47705 in Vol. 7(1) Sec. 8 (13)
MFR: Siemens
MFR #: 3RV1042-4JB10
UPC: 754554730479
Item #: 364363
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About Circuit Breakers

Circuit breakers are a critical component of electrical systems, protecting them against overload or short-circuiting. These devices shut off power when levels exceed a safety threshold in order to prevent damage to equipment or personnel. There are a variety of types of circuit breakers to suit different applications, including miniature, molded case, low voltage, GFCI, and AFCI.