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Insulated Case Circuit Breaker

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Insulated Case Circuit Breaker

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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
WLL3D350ZR	Limited Stock From Get Price	Siemens	5000
WLL3D350ZT	Limited Stock From Get Price	Siemens	5000
WLL3D350ZU	Limited Stock From Get Price	Siemens	5000
WLL3D350ZW	Limited Stock From Get Price	Siemens	5000
WLL3D350ZY	Limited Stock From Get Price	Siemens	5000
WLL3F340N	Limited Stock From Get Price	Siemens	4000
WLL3F340NA	Limited Stock From Get Price	Siemens	4000
WLL3F340NB	Limited Stock From Get Price	Siemens	4000
WLL3F340NC	Limited Stock From Get Price	Siemens	4000
WLL3F340ND	Limited Stock From Get Price	Siemens	4000
WLL3F340NE	Limited Stock From Get Price	Siemens	4000
WLL3F340NF	Limited Stock From Get Price	Siemens	4000
WLL3F340NG	Limited Stock From Get Price	Siemens	4000
WLL3F340NH	Limited Stock From Get Price	Siemens	4000
WLL3F340NJ	Limited Stock From Get Price	Siemens	4000
WLL3F340NK	Limited Stock From Get Price	Siemens	4000
WLL3F340NL	Limited Stock From Get Price	Siemens	4000
WLL3F340NN	Limited Stock From Get Price	Siemens	4000
WLL3F340NP	Limited Stock From Get Price	Siemens	4000
WLL3F340NQ	Limited Stock From Get Price	Siemens	4000
WLL3F340NR	Limited Stock From Get Price	Siemens	4000
WLL3F340NT	Limited Stock From Get Price	Siemens	4000
WLL3F340NU	Limited Stock From Get Price	Siemens	4000
WLL3F340NW	Limited Stock From Get Price	Siemens	4000

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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.