"B" Bolt-on Breakers (120/240V)
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Part #SIEM B250 50AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 50 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 A
MFG #B250
47 in Stock. More available 02/23/2026 and 03/09/2026
$58.54/EA
Part #SIEM B350 50AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 50 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 AWG Wire,
MFG #B350
22 in Stock. More available 02/23/2026 and 03/13/2026
$194.48/EA
Part #SIEM B3100 100AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 100 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 4 to 1/0 AWG, 2 to 1/0 AW
MFG #B3100
22 in Stock. More available 03/09/2026
$266.64/EA
Part #SIEM B360 60AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 60 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 AWG Wire,
MFG #B360
28 in Stock. More available 02/23/2026 and 03/09/2026
$194.48/EA
Part #SIEM BF120A 20AMP 1POLE 120VAC GFCI BOLT ON CIRCUIT BREAKER Siemens Ground Fault Circuit Breaker, Type GFCI Class A, 120 VAC, 20 A, 10 kA Interrupt, BLF2 Frame, Thermal Magnetic Trip, 5 mA Trip, 1 Pole, Bolt-On Connection, Panelboard Mounting
MFG #BF120A
30 in Stock. More available 02/23/2026 and 03/09/2026
$105.49/EA
Part #SIEM B120 20AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER TYPE BL 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B120
683 in Stock. More available 03/09/2026
$24.74/EA
Part #SIEM B215 15AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B215
27 in Stock. More available 03/09/2026
$59.84/EA
Part #SIEM B220 20AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B220
98 in Stock. More available 02/23/2026 and 03/09/2026
$57.29/EA
Part #SIEM B2100 100AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 100 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 4 to 1/0 AWG, 2 t
MFG #B2100
26 in Stock. More available 03/09/2026
$155.63/EA
Part #SIEM B115 15AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG
MFG #B115
61 in Stock. More available 03/09/2026
$26.39/EA
Part #SIEM B320 20AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG
MFG #B320
44 in Stock. More available 03/09/2026
$190.25/EA
Part #SIEM B260 60AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 60 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 A
MFG #B260
54 in Stock. More available 03/09/2026
$59.84/EA
Part #SIEM B330 30AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 12 to 6 AWG Aluminum, 14 to 6 AWG Copper
MFG #B330
29 in Stock. More available 02/23/2026 and 03/09/2026
$194.48/EA
Part #SIEM B230 30AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 6 AWG, 12 to 6
MFG #B230
89 in Stock. More available 03/09/2026
$57.29/EA
Part #SIEM B315 15AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG Wire, Bo
MFG #B315
16 in Stock. More available 03/09/2026
$194.48/EA
Part #SIEM B120H 20AMP 1POLE 120V 22KAIC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BLH, 120 VAC, 20 A, 60 Hz Frequency, 22 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG Wire, Bolt-On/
MFG #B120H
52 in Stock. More available 03/09/2026
$52.91/EA
Part #SIEM B130 30AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 6 AWG, 12 to 6 AWG Wire, Bolt
MFG #B130
39 in Stock. More available 03/09/2026
$26.39/EA
Part #SIEM B340 40AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 40 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 AWG Wire,
MFG #B340
17 in Stock. More available 03/09/2026
$194.48/EA
Part #SIEM B370 70AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 70 A, 60 Hz Frequency, 10 kA Interrupt, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 AWG Wire, Bolt-On/Pane
MFG #B370
7 in Stock. More available 03/09/2026
$236.72/EA
Part #SIEM B240 40AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 40 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 A
MFG #B240
32 in Stock. More available 02/23/2026 and 03/09/2026
$59.84/EA
Part #SIEM B250 50AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 50 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 A
MFG #B250
47 in Stock. More available 02/23/2026 and 03/09/2026
$58.54/EA
Part #SIEM B350 50AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 50 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 AWG Wire,
MFG #B350
22 in Stock. More available 02/23/2026 and 03/13/2026
$194.48/EA
Part #SIEM B3100 100AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 100 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 4 to 1/0 AWG, 2 to 1/0 AW
MFG #B3100
22 in Stock. More available 03/09/2026
$266.64/EA
Part #SIEM B360 60AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 60 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 AWG Wire,
MFG #B360
28 in Stock. More available 02/23/2026 and 03/09/2026
$194.48/EA
Part #SIEM BF120A 20AMP 1POLE 120VAC GFCI BOLT ON CIRCUIT BREAKER Siemens Ground Fault Circuit Breaker, Type GFCI Class A, 120 VAC, 20 A, 10 kA Interrupt, BLF2 Frame, Thermal Magnetic Trip, 5 mA Trip, 1 Pole, Bolt-On Connection, Panelboard Mounting
MFG #BF120A
30 in Stock. More available 02/23/2026 and 03/09/2026
$105.49/EA
Part #SIEM B120 20AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER TYPE BL 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B120
683 in Stock. More available 03/09/2026
$24.74/EA
Part #SIEM B215 15AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B215
27 in Stock. More available 03/09/2026
$59.84/EA
Part #SIEM B220 20AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to
MFG #B220
98 in Stock. More available 02/23/2026 and 03/09/2026
$57.29/EA
Part #SIEM B2100 100AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 100 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 4 to 1/0 AWG, 2 t
MFG #B2100
26 in Stock. More available 03/09/2026
$155.63/EA
Part #SIEM B115 15AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG
MFG #B115
61 in Stock. More available 03/09/2026
$26.39/EA
Part #SIEM B320 20AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 20 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG
MFG #B320
44 in Stock. More available 03/09/2026
$190.25/EA
Part #SIEM B260 60AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 60 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 A
MFG #B260
54 in Stock. More available 03/09/2026
$59.84/EA
Part #SIEM B330 30AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10K AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 12 to 6 AWG Aluminum, 14 to 6 AWG Copper
MFG #B330
29 in Stock. More available 02/23/2026 and 03/09/2026
$194.48/EA
Part #SIEM B230 30AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 14 to 6 AWG, 12 to 6
MFG #B230
89 in Stock. More available 03/09/2026
$57.29/EA
Part #SIEM B315 15AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 15 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG Wire, Bo
MFG #B315
16 in Stock. More available 03/09/2026
$194.48/EA
Part #SIEM B120H 20AMP 1POLE 120V 22KAIC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BLH, 120 VAC, 20 A, 60 Hz Frequency, 22 kA Interrupt, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 10 AWG, 12 to 10 AWG Wire, Bolt-On/
MFG #B120H
52 in Stock. More available 03/09/2026
$52.91/EA
Part #SIEM B130 30AMP 1POLE 120VAC BOLT ON CIRCUIT BREAKER Siemens Molded Case Circuit Breaker, Type BL, 120 VAC, 30 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 1 Pole, 1 ph, Toggle Actuator, 14 to 6 AWG, 12 to 6 AWG Wire, Bolt
MFG #B130
39 in Stock. More available 03/09/2026
$26.39/EA
Part #SIEM B340 40AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10AIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 40 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 AWG Wire,
MFG #B340
17 in Stock. More available 03/09/2026
$194.48/EA
Part #SIEM B370 70AMP 3POLE 240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 240 VAC, 70 A, 60 Hz Frequency, 10 kA Interrupt, Thermal/Magnetic Trip, 3 Pole, 3 ph, Toggle Actuator, 8 to 4 AWG, 8 to 2 AWG Wire, Bolt-On/Pane
MFG #B370
7 in Stock. More available 03/09/2026
$236.72/EA
Part #SIEM B240 40AMP 2POLE 120/240VAC BOLT ON CIRCUIT BREAKER 10KAIC Siemens Molded Case Circuit Breaker, Type BL, 120/240 VAC, 40 A, 60 Hz Frequency, 10 kA Interrupt, 125 A Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, Toggle Actuator, 8 to 6 AWG, 8 to 4 A
MFG #B240
32 in Stock. More available 02/23/2026 and 03/09/2026
$59.84/EA















