{"product_id":"siemens-q21540ct2-40a-2p-240v-circuit-breaker","title":"Siemens Q21540CT2 40A 2P 240V Circuit Breaker, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens Q21540CT2 40A 2P 240V Circuit Breaker is a dependable, fast-to-install protection solution for panelboards, load centers, and electric distribution systems. This plug-on breaker is engineered to deliver reliable overcurrent protection in a compact, Siemens-compatible package—perfect for quick replacements and precise part-number matches.\u003c\/p\u003e \u003ch3\u003eWhy the Siemens Q21540CT2 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-On installation\u003c\/strong\u003e: Designed for seamless mounting in compatible Siemens panelboards and load centers, reducing service time and downtime during maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAccurate part-number compatibility\u003c\/strong\u003e: A direct match to Siemens systems means fewer fit concerns and simpler ordering for spare inventories.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable 40 A protection\u003c\/strong\u003e: Ideal for safeguarding 240V circuits, helping prevent damage from overloads in both commercial and industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole design\u003c\/strong\u003e: Provides comprehensive protection across both live conductors on 240V circuits, improving safety and trip coordination in multi-wire applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re stocking a maintenance van, outfitting a new panel build, or replacing a failed breaker, the Q21540CT2 is a smart, ready-to-use choice from AmpState. It’s built to align with Siemens distribution equipment, so you can trust compatibility in your existing infrastructure.\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 Q21540CT2\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 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit. AmpState carries this Siemens model to support your precise requirements and quick-turn projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410945626274,"sku":"Q21540CT2","price":287.0,"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-q21540ct2-40a-2p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}