"Q" Plug-in Branch Breakers

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8162448

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SIEM Q3100

Part #SIEM Q3100 100AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 100 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection,

MFG #Q3100

15 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$986.66/BX

Regular Price: $1164.00/BX, you save $177.34 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q320

Part #SIEM Q320 20AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 20 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 14

MFG #Q320

34 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM QA120AFC

Part #SIEM QA120AFC 20AMP 1POLE 120VAC AFCI PLUG-IN CIRCUIT BREAKER Siemens SpeedFaxâ„¢, QA120AFCCSA, Arc-Fault Circuit Breaker, Low Voltage, 120 VAC, 20 A, 50/60 Hz Frequency, 10 kA Interrupt, QAF2 Frame, LI/Thermal Magnetic Trip, 1 Pole, 1

MFG #QA120AFC

47 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$1025.59/BX

QTY

U/M

EA BX /10

ADD TO CARTADD TO LIST

SIEM Q2020NC

Part #SIEM Q2020NC 20/20AMP 1POLE 120VAC (2)20AMP CIRCUITS PLUG-IN CIRCUIT BREAKER FOR REPLACEMENT USE ONLY IN PANELS MANUFACTURED BEFORE 1968 Siemens Molded Case Circuit Breaker, Type QT Duplex Low Voltage Miniature Non-Current Limiting, 120 VAC, 20 A, 60

MFG #Q2020NC

157 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$787.68/BX

Regular Price: $1164.00/BX, you save $376.32 (32%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q350

Part #SIEM Q350 50AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, 240 VAC, 50 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 to 6 AWG, 8 to 4 AWG Wire, NEMA 1/3R

MFG #Q350

19 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q290

Part #SIEM Q290 90AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP/MP Low Voltage Miniature, 120/240 VAC, 90 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Load Lug/Plug-In Connection,

MFG #Q290

13 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$662.96/BX

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q120

Part #SIEM Q120 20AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type Q, 120 VAC, 20 A, 10 kA Interrupt, QP Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Mounting, 40 deg C, 3.6 in W x 12.8 in D x 3.5 in H Dimensions

MFG #Q120

2924 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$152.66/BX

Regular Price: $180.00/BX, you save $27.34 (15%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q245

Part #SIEM Q245 BREAKER 45A 2P 120/240V 10K QP Siemens Molded Case Circuit Breaker, Type QP/MP, 120/240 VAC, 45 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Plug-In Connection, 8 to 6 AWG, 8 to 4 AWG Wire, NEMA 1/3R Enclosur

MFG #Q245

11 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$30.93/BX

QTY

U/M

EA BX

ADD TO CARTADD TO LIST

SIEM Q23030CT2

Part #SIEM Q23030CT2 30AMP 2POLE 120/240VAC (2)30AMP 2POLE COMMON TRIP PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QT Low Voltage Miniature Quadplex, Series: Quadplex, 120/240 VAC, 30 A, 10 kA Interrupt, QT Frame, Thermal/Magnetic Tri

MFG #Q23030CT2

13 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$623.66/BX

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q270

Part #SIEM Q270 70AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP/MP Low Voltage Miniature, 120/240 VAC, 70 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Load Lug/Plug-In Connection,

MFG #Q270

17 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$460.39/BX

QTY

U/M

EA BX /6

ADD TO CARTADD TO LIST

SIEM Q340

Part #SIEM Q340 40AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 40 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 t

MFG #Q340

15 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q130

Part #SIEM Q130 30AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP, 120 VAC, 30 A, 10 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Mounting, 40 deg C, 1 in W x 3 in D x 3 in H Dimensions

MFG #Q130

123 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$82.97/BX

Regular Price: $90.00/BX, you save $7.03 (8%)

QTY

U/M

EA BX /6

ADD TO CARTADD TO LIST

SIEM Q115

Part #SIEM Q115 15AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, 120 VAC, 15 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Connection, 14 to 12 AWG, 12 to 10 AWG Wire, NEMA

MFG #Q115

1785 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$152.66/BX

Regular Price: $180.00/BX, you save $27.34 (15%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q215

Part #SIEM Q215 15AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type Q, 120 VAC, 15 A, 10 kA Interrupt, QP Frame, Thermal/Magnetic Trip, 2 Pole, Plug-In Mounting, 3 in W x 3 in D x 2 in H Dimensions

MFG #Q215

238 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$174.00/BX

Regular Price: $184.80/BX, you save $10.80 (6%)

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q360

Part #SIEM Q360 60AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 60 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 t

MFG #Q360

19 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM QSA2020SPD

Part #SIEM QSA2020SPD 20AMP (2)20AMP 1POLE 120/240VAC PLUG-IN CIRCUIT BREAKERS W/SURGE PROTECTIVE DEVICE (ALL BRANCH CIRCUITS) Siemens Surge Protection Circuit Breaker, Molded Case, 120/240 VAC, 15 A, 10 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, Plug-In

MFG #QSA2020SPD

28 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$9427.18/BX

Regular Price: $21700.00/BX, you save $12,272.82 (57%)

QTY

U/M

EA BX /28

ADD TO CARTADD TO LIST

SIEM Q3100

Part #SIEM Q3100 100AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 100 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection,

MFG #Q3100

15 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$986.66/BX

Regular Price: $1164.00/BX, you save $177.34 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q320

Part #SIEM Q320 20AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 20 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 14

MFG #Q320

34 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM QA120AFC

Part #SIEM QA120AFC 20AMP 1POLE 120VAC AFCI PLUG-IN CIRCUIT BREAKER Siemens SpeedFaxâ„¢, QA120AFCCSA, Arc-Fault Circuit Breaker, Low Voltage, 120 VAC, 20 A, 50/60 Hz Frequency, 10 kA Interrupt, QAF2 Frame, LI/Thermal Magnetic Trip, 1 Pole, 1

MFG #QA120AFC

47 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$1025.59/BX

QTY

U/M

EA BX /10

ADD TO CARTADD TO LIST

SIEM Q2020NC

Part #SIEM Q2020NC 20/20AMP 1POLE 120VAC (2)20AMP CIRCUITS PLUG-IN CIRCUIT BREAKER FOR REPLACEMENT USE ONLY IN PANELS MANUFACTURED BEFORE 1968 Siemens Molded Case Circuit Breaker, Type QT Duplex Low Voltage Miniature Non-Current Limiting, 120 VAC, 20 A, 60

MFG #Q2020NC

157 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$787.68/BX

Regular Price: $1164.00/BX, you save $376.32 (32%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q350

Part #SIEM Q350 50AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, 240 VAC, 50 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 to 6 AWG, 8 to 4 AWG Wire, NEMA 1/3R

MFG #Q350

19 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q290

Part #SIEM Q290 90AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP/MP Low Voltage Miniature, 120/240 VAC, 90 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Load Lug/Plug-In Connection,

MFG #Q290

13 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$662.96/BX

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q120

Part #SIEM Q120 20AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type Q, 120 VAC, 20 A, 10 kA Interrupt, QP Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Mounting, 40 deg C, 3.6 in W x 12.8 in D x 3.5 in H Dimensions

MFG #Q120

2924 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$152.66/BX

Regular Price: $180.00/BX, you save $27.34 (15%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q245

Part #SIEM Q245 BREAKER 45A 2P 120/240V 10K QP Siemens Molded Case Circuit Breaker, Type QP/MP, 120/240 VAC, 45 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Plug-In Connection, 8 to 6 AWG, 8 to 4 AWG Wire, NEMA 1/3R Enclosur

MFG #Q245

11 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$30.93/BX

QTY

U/M

EA BX

ADD TO CARTADD TO LIST

SIEM Q23030CT2

Part #SIEM Q23030CT2 30AMP 2POLE 120/240VAC (2)30AMP 2POLE COMMON TRIP PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QT Low Voltage Miniature Quadplex, Series: Quadplex, 120/240 VAC, 30 A, 10 kA Interrupt, QT Frame, Thermal/Magnetic Tri

MFG #Q23030CT2

13 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$623.66/BX

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q270

Part #SIEM Q270 70AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP/MP Low Voltage Miniature, 120/240 VAC, 70 A, 60 Hz Frequency, 10 kA Interrupt, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Load Lug/Plug-In Connection,

MFG #Q270

17 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$460.39/BX

QTY

U/M

EA BX /6

ADD TO CARTADD TO LIST

SIEM Q340

Part #SIEM Q340 40AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 40 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 t

MFG #Q340

15 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM Q130

Part #SIEM Q130 30AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type QP, 120 VAC, 30 A, 10 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Mounting, 40 deg C, 1 in W x 3 in D x 3 in H Dimensions

MFG #Q130

123 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$82.97/BX

Regular Price: $90.00/BX, you save $7.03 (8%)

QTY

U/M

EA BX /6

ADD TO CARTADD TO LIST

SIEM Q115

Part #SIEM Q115 15AMP 1POLE 120VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, 120 VAC, 15 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Plug-In Connection, 14 to 12 AWG, 12 to 10 AWG Wire, NEMA

MFG #Q115

1785 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$152.66/BX

Regular Price: $180.00/BX, you save $27.34 (15%)

QTY

U/M

EA BX /12CA /48CS /48

ADD TO CARTADD TO LIST

SIEM Q215

Part #SIEM Q215 15AMP 2POLE 120/240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type Q, 120 VAC, 15 A, 10 kA Interrupt, QP Frame, Thermal/Magnetic Trip, 2 Pole, Plug-In Mounting, 3 in W x 3 in D x 2 in H Dimensions

MFG #Q215

238 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$174.00/BX

Regular Price: $184.80/BX, you save $10.80 (6%)

QTY

U/M

EA BX /6CA /24CS /24

ADD TO CARTADD TO LIST

SIEM Q360

Part #SIEM Q360 60AMP 3POLE 240VAC PLUG-IN CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Low Voltage Miniature Residential, 240 VAC, 60 A, 50/60 Hz Frequency, 10 kA Interrupt, QP/MP Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Plug-In Connection, 8 t

MFG #Q360

19 in Stock. More available 12/20/2025 and 01/08/2026

VIEW BRANCH INVENTORY

$659.47/BX

Regular Price: $778.00/BX, you save $118.53 (15%)

QTY

U/M

EA BX /4CA /16CS /16

ADD TO CARTADD TO LIST

SIEM QSA2020SPD

Part #SIEM QSA2020SPD 20AMP (2)20AMP 1POLE 120/240VAC PLUG-IN CIRCUIT BREAKERS W/SURGE PROTECTIVE DEVICE (ALL BRANCH CIRCUITS) Siemens Surge Protection Circuit Breaker, Molded Case, 120/240 VAC, 15 A, 10 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, Plug-In

MFG #QSA2020SPD

28 in Stock. More available 01/08/2026

VIEW BRANCH INVENTORY

$9427.18/BX

Regular Price: $21700.00/BX, you save $12,272.82 (57%)

QTY

U/M

EA BX /28

ADD TO CARTADD TO LIST

Results Per Page

8162448