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Insulated Case Circuit Breaker

For circuit breaker applications in commercial and industrial power distribution systems, insulated case circuit breakers are among the most critical components for reliable overcurrent protection and system safety. Insulated case circuit breakers provide adjustable trip settings and high interrupting capacity while offering compact installation in panelboards and switchboards. Electrical.com carries an extensive selection of insulated case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, industrial facilities, data centers, and healthcare infrastructure applications.
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Part Number
PRICE
Manufacturer
Amperage
WLS1D316PF
WLS1D316PF
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Siemens
1600
WLS1D316PG
WLS1D316PG
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Siemens
1600
WLS1D316PH
WLS1D316PH
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Siemens
1600
WLS1D316PJ
WLS1D316PJ
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Siemens
1600
WLS1D316PK
WLS1D316PK
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Siemens
1600
WLS1D316PL
WLS1D316PL
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Siemens
1600
WLS1D316PN
WLS1D316PN
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Siemens
1600
WLS1D316PP
WLS1D316PP
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Siemens
1600
WLS1D316PQ
WLS1D316PQ
Limited Stock
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Siemens
1600
WLS1D316PR
WLS1D316PR
Limited Stock
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Siemens
1600
WLS1D316PT
WLS1D316PT
Limited Stock
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Siemens
1600
WLS1D316PU
WLS1D316PU
Limited Stock
From
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Siemens
1600
WLS1D316PW
WLS1D316PW
Limited Stock
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Siemens
1600
WLS1D316PY
WLS1D316PY
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Siemens
1600
WLS1D316Q
WLS1D316Q
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Siemens
1600
WLS1D316QE
WLS1D316QE
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Siemens
1600
WLS1D316QF
WLS1D316QF
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Siemens
1600
WLS1D316QG
WLS1D316QG
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Siemens
1600
WLS1D316QH
WLS1D316QH
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Siemens
1600
WLS1D316QJ
WLS1D316QJ
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Siemens
1600
WLS1D316QK
WLS1D316QK
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Siemens
1600
WLS1D316QL
WLS1D316QL
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From
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Siemens
1600
WLS1D316QN
WLS1D316QN
Limited Stock
From
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Siemens
1600
WLS1D316QP
WLS1D316QP
Limited Stock
From
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Siemens
1600

Electrical.com stocks the largest inventory of insulated case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit breakers available for immediate shipment. From low voltage to medium voltage applications, we have the insulated case breakers you need when others say no. Our comprehensive insulated case circuit breaker inventory spans all amperage ratings, voltage classes, and frame sizes from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our insulated case circuit breakers serve critical applications across industrial power distribution systems, manufacturing facilities, commercial buildings, data centers, utility substations, process control installations, and heavy industrial equipment.


Whether you're maintaining legacy electrical systems with obsolete insulated case breaker models or sourcing current production breakers for new installations and upgrades, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need insulated case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.