Square-d Circuit breakers Category

We have over 6,000 Square D products ranging from circuit breakers and soft starters to load centers, safety switches and VFDs. Shop today for Square D products!

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View Details Square D QOB130EPD MINIATURE CIRCUIT BREAKER - QO, 30 A, 1P, 120 V, 10 kA, Bolt on, EPD | Blackhawk Supply
QOB130EPD | MINIATURE CIRCUIT BREAKER - QO, 30 A, 1P, 120 V, 10 kA, Bolt on, EPD | Square D
Brand: Square D
SKU: QOB130EPD
$406.35 each
View Details Square D QO360 QO Miniature circuit-breaker, 60 A, 3 pole, 120/240 V, 10 kA, plug in | Blackhawk Supply
QO360 | QO Miniature circuit-breaker, 60 A, 3 pole, 120 / 240 V, 10 kA, plug in | Square D
Brand: Square D
SKU: QO360
$175.16 each
View Details Square D QO340GFI MINIATURE CIRCUIT BREAKER, QO, 40 A, 3P, 208Y/120 V, 10 kA, Plug in, GFI | Blackhawk Supply
QO340GFI | MINIATURE CIRCUIT BREAKER, QO, 40 A, 3P, 208Y / 120 V, 10 kA, Plug in, GFI | Square D
Brand: Square D
SKU: QO340GFI
$601.43 each
View Details Square D QO320 MINIATURE CIRCUIT BREAKER 240V 20A | Blackhawk Supply
QO320 | MINIATURE CIRCUIT BREAKER 240V 20A | Square D
Brand: Square D
SKU: QO320
$175.16 each
View Details Square D QO3020 MINIATURE CIRCUIT BREAKER 240V 30/20A | Blackhawk Supply
QO3020 | MINIATURE CIRCUIT BREAKER 240V 30 / 20A | Square D
Brand: Square D
SKU: QO3020
$71.21 each
View Details Square D QO270 QO Miniature Circuit-Breaker, 70 A, 2 pole, 120/240 V, 10 kA, plug in | Blackhawk Supply
QO270 | QO Miniature Circuit-Breaker, 70 A, 2 pole, 120 / 240 V, 10 kA, plug in | Square D
Brand: Square D
SKU: QO270
$81.34 each
View Details Square D M9F43205 MULTI 9 - C60BP MINIATURE CIRCUIT-BREAKER, 2P, 5 A, D CURVE, 480Y/277 V, 10 KA, UL 489 | Blackhawk Supply
M9F43205 | MULTI 9 - C60BP MINIATURE CIRCUIT-BREAKER, 2P, 5 A, D CURVE, 480Y / 277 V, 10 KA, UL 489 | Square D
Brand: Square D
SKU: M9F43205
$200.48 each
View Details Square D M9F43203 Multi 9 Miniature Circuit Breaker, 3A, 2-Pole, 10kA, 480Y/277 V AC | Blackhawk Supply
M9F43203 | Multi 9 Miniature Circuit Breaker, 3A, 2-Pole, 10kA, 480Y / 277 V AC | Square D
Brand: Square D
SKU: M9F43203
$200.48 each
View Details Square D M9F21302 Multi 9 C60SP Miniature Circuit-breaker, 3P, 2 A, B Curve, 480Y/277 V, 10 kA, UL 1077 | Blackhawk Supply
M9F21302 | Multi 9 C60SP Miniature Circuit-breaker, 3P, 2 A, B Curve, 480Y / 277 V, 10 kA, UL 1077 | Square D
Brand: Square D
SKU: M9F21302
$224.10 each
View Details Square D M9F17116 MULTI 9 - C60L - MINIATURE CIRCUIT-BREAKER, 1P, 16 A, C CURVE, 240 V, 25 KA | Blackhawk Supply
M9F17116 | MULTI 9 - C60L - MINIATURE CIRCUIT-BREAKER, 1P, 16 A, C CURVE, 240 V, 25 KA | Square D
Brand: Square D
SKU: M9F17116
$42.86 each
View Details Square D M9F12216 Multi 9 Miniature Circuit Breaker, 16A, 2-Pole, 10kA, 415 VAC | Blackhawk Supply
M9F12216 | Multi 9 Miniature Circuit Breaker, 16A, 2-Pole, 10kA, 415 VAC | Square D
Brand: Square D
SKU: M9F12216
$191.36 each
View Details Square D LAL36350 MOLDED CASE CIRCUIT BREAKER 600V 350A | Blackhawk Supply
LAL36350 | MOLDED CASE CIRCUIT BREAKER 600V 350A | Square D
Brand: Square D
SKU: LAL36350
$2,235.26 each
View Details Square D JJA36250 MOLDED CASE CIRCUIT BREAKER 600V 250A | Blackhawk Supply
JJA36250 | MOLDED CASE CIRCUIT BREAKER 600V 250A | Square D
Brand: Square D
SKU: JJA36250
$6,164.78 each
View Details Square D JGL36000S17 POWERPACT AUTOMATIC MOULDED CASE SWITCH 600V 175 A J-Frame | Blackhawk Supply
JGL36000S17 | POWERPACT AUTOMATIC MOULDED CASE SWITCH 600V 175 A J-Frame | Square D
Brand: Square D
SKU: JGL36000S17
$2,172.15 each
View Details Square D HOM120PDF Homeline Miniature Circuit Breaker, 20A, 120V AC, Plug-in, 1-Pole, 10kA | Blackhawk Supply
HOM120PDF | Homeline Miniature Circuit Breaker, 20A, 120V AC, Plug-in, 1-Pole, 10kA | Square D
Brand: Square D
SKU: HOM120PDF
$84.71 each
View Details Square D HJP36100M73 POWERPACT H CIRCUIT BREAKER, MOTOR PROTECTOR, 100A, 3P, 600V, 25KA | Blackhawk Supply
HJP36100M73 | POWERPACT H CIRCUIT BREAKER, MOTOR PROTECTOR, 100A, 3P, 600V, 25KA | Square D
Brand: Square D
SKU: HJP36100M73
$1,622.03 each
View Details Square D HJL36150M74 PowerPact H Circuit Breaker, MotorProtector, 50A, 3P, 600V, 25kA | Blackhawk Supply
HJL36150M74 | PowerPact H Circuit Breaker, MotorProtector, 50A, 3P, 600V, 25kA | Square D
Brand: Square D
SKU: HJL36150M74
$2,038.84 each
View Details Square D EDB34125 Miniature Circuit Breaker, 125A, 3-Pole, 480Y/277V AC, 18/25kA, Bolt-on Mount | Blackhawk Supply
EDB34125 | Miniature Circuit Breaker, 125A, 3-Pole, 480Y / 277V AC, 18 / 25kA, Bolt-on Mount | Square D
Brand: Square D
SKU: EDB34125
$1,027.01 each
View Details Square D 9422CMP50 CABLE OPERATING MECHANISM NEMA | Blackhawk Supply
9422CMP50 | CABLE OPERATING MECHANISM NEMA | Square D
Brand: Square D
SKU: 9422CMP50
$980.78 each
View Details Square D M9F22101 Multi 9-C60SP MCB, 1P, 1 A, C Curve, 277 V, 10 kA, UL 1077. | Blackhawk Supply
M9F22101 | Multi 9-C60SP MCB, 1P, 1 A, C Curve, 277 V, 10 kA, UL 1077. | Square D
Brand: Square D
SKU: M9F22101
$69.10 each
View Details Square D QO120GFI Square D QO Mini CB, QO, 20 A, 1P, 120 V, 10 kA, Plug in, GFI | Blackhawk Supply
QO120GFI | Square D QO Mini CB, QO, 20 A, 1P, 120 V, 10 kA, Plug in, GFI | Square D
Brand: Square D
SKU: QO120GFI
$115.09 each
View Details Square D QOB230 MINI CIRCUIT BKR 120/240V 30A | Blackhawk Supply
QOB230 | MINI CIRCUIT BKR 120 / 240V 30A | Square D
Brand: Square D
SKU: QOB230
$54.34 each
View Details Square D QO115CAFI MINIATURE CIRCUIT BREAKER, QO, 15 A, 1P, 120/240 V, 10 kA, Plug in, CAFI | Blackhawk Supply
QO115CAFI | MINIATURE CIRCUIT BREAKER, QO, 15 A, 1P, 120 / 240 V, 10 kA, Plug in, CAFI | Square D
Brand: Square D
SKU: QO115CAFI
$193.73 each
View Details Square D HOM270 MINIATURE CIRCUIT BREAKER, 2P, 120/240V 70A | Blackhawk Supply
HOM270 | MINIATURE CIRCUIT BREAKER, 2P, 120 / 240V 70A | Square D
Brand: Square D
SKU: HOM270
$57.71 each
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iO-WR | Wireless Relay | iO HVAC Controls
Brand: iO HVAC Controls
SKU: iO-WR
$233.99 each
Johnson Controls A421ABC-02C Single Stage Temp Controller with Sensor, 120/240VAC, NEMA1, 6' 6" lead, -40 to 212F, HTG/CLG | Blackhawk Supply
A421ABC-02C | Single Stage Temp Controller with Sensor, 120/240VAC, NEMA1, 6' 6" lead, -40 to 212F, HTG/CLG | Johnson Controls
Brand: Johnson Controls
SKU: A421ABC-02C
$121.09 each
Belimo ZTH US Handheld programming tool with ZK1-GEN | ZK2-GEN and ZK6-GEN. | Blackhawk Supply
ZTH US | Handheld programming tool with ZK1-GEN | ZK2-GEN and ZK6-GEN. | Belimo
Brand: Belimo
SKU: ZTH US
$622.35 each
Veris H221 Split Core | Span Adj. | Range: 0-300AAC | Output: 4-20mA | Loop | Blackhawk Supply
H221 | Split Core | Span Adj. | Range: 0-300AAC | Output: 4-20mA | Loop | Veris
Brand: Veris
SKU: H221
$141.60 each
iO HVAC Controls IO-WRP WIRELESS RELAY PLUS | Blackhawk Supply
IO-WRP | WIRELESS RELAY PLUS | iO HVAC Controls
Brand: iO HVAC Controls
SKU: IO-WRP
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Contemporary Controls EISK8-100T 8-port 10BASE-T/100BASE-TX Skorpion switch, DIN-rail mount | Blackhawk Supply
EISK8-100T | 8-port 10BASE-T/100BASE-TX Skorpion switch, DIN-rail mount | Contemporary Controls
Brand: Contemporary Controls
SKU: EISK8-100T
$180.94 each
Contemporary Controls EISK16-100T Skorpion 16-Port 10/100Mbps Switch | Blackhawk Supply
EISK16-100T | Skorpion 16-Port 10/100Mbps Switch | Contemporary Controls
Brand: Contemporary Controls
SKU: EISK16-100T
$340.31 each
Danfoss 065B8900 ESBE ATA Thermostatic Draft Regulator, 3/4" FNPT, 2.2 Pound-force (10N) | Blackhawk Supply
065B8900 | ESBE ATA Thermostatic Draft Regulator, 3/4" FNPT, 2.2 Pound-force (10N) | Danfoss
Brand: Danfoss
SKU: 065B8900
$135.57 each
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