{"product_id":"siemens-jl3-b400-400a-3p-600v-circuit-breaker","title":"Siemens JL3-B400 Circuit Breaker, 400A, 3-Pole, 600V","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for demanding industrial environments, the Siemens JL3-B400 Circuit Breaker delivers reliable 400 A, 3-pole protection for 600 V systems. Designed for service, maintenance, and replacement projects, this JL3-B400 unit safeguards your three-phase power distribution with precision and confidence.\u003c\/p\u003e \u003ch3\u003eWhat makes the JL3-B400 stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e400 A amperage rating tailored for high-demand industrial circuits\u003c\/li\u003e \u003cli\u003e3-pole design to effectively protect three-phase systems\u003c\/li\u003e \u003cli\u003e600 V maximum working voltage, suitable for industrial electrical installations\u003c\/li\u003e \u003cli\u003ePart Number JL3-B400 ensures exact compatibility and straightforward sourcing\u003c\/li\u003e \u003cli\u003eManufactured by Siemens, a trusted name in industrial power protection\u003c\/li\u003e \u003cli\u003eIdeal for service, maintenance, and replacement scenarios to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003eProduct Type: Circuit Breaker\u003c\/li\u003e \u003cli\u003eAmperage: 400 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e \u003cli\u003ePart Number: JL3-B400\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIndustrial electrical service taps, feeders, and distribution panels requiring reliable 3-phase protection\u003c\/li\u003e \u003cli\u003eMaintenance outages or planned replacements where quick, compatible substitutions are essential\u003c\/li\u003e \u003cli\u003ePanel upgrades or expansions that demand consistent Siemens components for system compatibility\u003c\/li\u003e \u003cli\u003eSpare parts inventory for critical manufacturing lines where downtime costs matter\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation considerations\u003c\/h3\u003e\n\u003cp\u003eNotes: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? Message us and we'll help.\u003c\/p\u003e \u003cp\u003eWhen you choose the Siemens JL3-B400, you’re selecting a component built for reliability in demanding environments. It’s not just a breaker—it's a strategic piece of your industrial power infrastructure, designed to protect equipment, reduce downtime, and keep critical processes running smoothly. If you’re upgrading or stocking for maintenance, the JL3-B400 provides a clear path to dependable three-phase protection at 600 V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46416044196002,"sku":"JL3-B400","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jl3-b400-circuit-breaker-400a-3-pole-600v-breakers-943.webp?v=1789228395","url":"https:\/\/www.ampstate.com\/products\/siemens-jl3-b400-400a-3p-600v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}