{"product_id":"siemens-q345-45a-3p-240v-circuit-breaker","title":"Siemens Q345 45A 3P 240V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens Q345 45A 3P 240V circuit breaker—a dependable protection device built for everyday electrical work. It’s designed to shield panelboards, load centers, and distribution networks from overcurrent, helping keep services running smoothly and safely.\u003c\/p\u003e \u003cp\u003eThis unit is ideal for replacement projects and stocking spares, ensuring your procurement stays aligned with the original part number on your BOM. With the Q345, you safeguard compatibility and streamline maintenance when you’re retooling or expanding existing Siemens installations.\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 Q345\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Panelboards, load centers, electrical distribution\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the Q345 stands out\u003c\/h3\u003e\n\u003cp\u003eWhat makes this 3-pole, 45A 240V breaker compelling is its seamless compatibility with Siemens panel hardware and BOM integrity. It’s purpose-built to protect multi‑phase circuits in standard 240V systems, delivering predictable performance when you need reliable circuit protection without guessing about fit.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacement installations in existing Siemens panelboards and load centers\u003c\/li\u003e \u003cli\u003eSpare stock for maintenance teams to minimize downtime during outages\u003c\/li\u003e \u003cli\u003eProcurement that stays in sync with the original equipment BOM to prevent mismatches\u003c\/li\u003e \u003cli\u003eField service jobs where a genuine Siemens Q-line part is required for compliance\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility \u0026amp; support\u003c\/h3\u003e\n\u003cp\u003eNeed help confirming fit? AmpState is ready to assist with part-number matching and compatibility checks. If you’re unsure whether Q345 aligns with your specific panel or bus configuration, send a message and our team will verify the match to keep your project on track.\u003c\/p\u003e \u003cp\u003eStock this Siemens Q345 today and experience reliable protection, easy procurement, and BOM-consistent maintenance for your electrical distribution system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410885759138,"sku":"Q345","price":243.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/siemens-q345-45a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}