{"product_id":"siemens-cjd63b350-350a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens CJD63B350 - 350 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens CJD63B350 from AmpState — a 350 A, 600 V, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to withstand demanding electrical environments, this unit pairs Siemens reliability with a robust mounting solution and precise protection performance.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: delivers a rigid, vibration-resistant bus connection that stays solid even in busy service panels and industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: provides stable, repeatable protection by combining thermal elements that prevent nuisance trips with a fast magnetic trip during high faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e: balanced, coordinated protection for three-phase circuits—ideal for commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-capacity rating\u003c\/strong\u003e: 350 A continuous current and 600 V maximum voltage ensure reliable protection for mid-to-large branch circuits and motor feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-panel compatibility\u003c\/strong\u003e: designed to integrate seamlessly with matching Siemens load centers and panelboards for coordinated protection and straightforward replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e: Residential, commercial, and light industrial settings where robust overcurrent and short-circuit protection is essential. Use this bolt-on MCCB to safeguard three-phase feeders, motor circuits, and critical branch circuits in newer installations or panel upgrades.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: CJD63B350\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating\u003c\/strong\u003e: 350 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style\u003c\/strong\u003e: Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy it matters for your electrical system: this breaker’s bolt-on design and vibration resistance help minimize connections loosening over time, while the thermal-magnetic trip ensures precise protection aligned with the circuit’s fault current and ambient conditions. When paired with compatible Siemens panels, it delivers predictable trip behavior, ease of maintenance, and a cohesive protection strategy across your electrical distribution setup.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical deployment tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify bus connections and cleat alignment before mounting to ensure optimal electrical contact and reliable performance.\u003c\/li\u003e \u003cli\u003eChoose a Siemens-compatible load center or panelboard to guarantee coordinated trip curves and interruption ratings across the distribution system.\u003c\/li\u003e \u003cli\u003eAssess continuous load versus fault current to confirm the 350 A rating is appropriate for the circuit being protected, helping minimize nuisance trips while maintaining safety.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349779828898,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_56d03262-acf1-43e5-80ef-34692ec9d44f.png?v=1764156465","url":"https:\/\/www.ampstate.com\/products\/siemens-cjd63b350-350a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}