{"product_id":"siemens-mq240","title":"Siemens MQ240 40A 2-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens MQ240 40A 2-Pole 240 V Circuit Breaker — a reliable protection solution crafted for modern electrical distribution. With a precise 40 A current rating, two-pole operation, and a 240 V nominal rating, this breaker is designed to safeguard panels, feeders, and equipment in commercial environments and light industrial settings. Part of Siemens’ trusted protection lineup, the MQ240 is built to endure demanding conditions while delivering predictable, safe isolation when faults or overloads occur.\u003c\/p\u003e \u003ch2\u003eWhy the MQ240 stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e40 A current rating\u003c\/strong\u003e provides targeted protection for circuits that demand reliable overcurrent protection without nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole design\u003c\/strong\u003e ensures simultaneous switching of both live conductors, improving safety and fault clearance in 240 V circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e240 V voltage rating\u003c\/strong\u003e aligns with standard distribution systems found in many commercial and light industrial installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number MQ240\u003c\/strong\u003e offers straightforward replacement and seamless compatibility within Siemens-based electrical infrastructure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePotential transformer compatibility\u003c\/strong\u003e supports protection and metering schemes that rely on measurement devices, enabling coordinated protection and accurate monitoring in complex systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable construction\u003c\/strong\u003e designed for long service life in demanding environments, with clear labeling for quick identification during inspections and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical applications and use cases\u003c\/h2\u003e\n\u003cp\u003eIdeal for panel boards, distribution feeders, and motor circuits where dependable overload protection and reliable isolation are essential. The Siemens MQ240 is well-suited for upgrades in facilities that require precise coordination with downstream relays and metering devices, including systems that employ potential transformers for monitoring and protection coordination.\u003c\/p\u003e \u003ch2\u003eHow it compares and why it matters\u003c\/h2\u003e\n\u003cp\u003eWhen you choose the MQ240, you’re opting into Siemens’ proven protection philosophy: robust electrical protection that integrates smoothly with existing Siemens equipment and metering schemes. Its two-pole design safeguards both conductors, reducing arcing risks and improving fault handling in 240 V distributions. For facilities aiming to streamline maintenance or replace aging breakers with a trusted, compatible solution, MQ240 offers a clear path to reliable performance without the guesswork of cross-brand substitutions.\u003c\/p\u003e \u003ch2\u003eWhat you get and practical tips for use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eSiemens MQ240 40A 2-Pole 240 V Circuit Breaker — Part Number MQ240\u003c\/li\u003e \u003cli\u003eUse in standard Siemens-compatible panels and distribution boards to maintain system cohesion\u003c\/li\u003e \u003cli\u003eBefore installation, verify system voltage and downstream protection coordination to ensure seamless operation with potential transformer-based metering or protection relays\u003c\/li\u003e \u003cli\u003eDuring maintenance, inspect for any signs of wear or tripping history, and ensure labeling remains legible for quick diagnostics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423598170274,"sku":"MQ240","price":404.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-mq240-40a-2-pole-240-v-circuit-breaker-potential-transformer-797.webp?v=1789319240","url":"https:\/\/www.ampstate.com\/products\/siemens-mq240","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}