{"product_id":"industrial-qnpl2040","title":"Industrial QNPL2040 40A 2-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eThe Industrial QNPL2040 is a dedicated two‑pole circuit breaker engineered for demanding industrial environments. With a 40 A current rating and a 240 V operating voltage, this part (PN QNPL2040) provides reliable overcurrent protection for 240 V circuits while integrating smoothly with protection relays and metering systems that rely on potential transformers.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QNPL2040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\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 rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat makes this model unique\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole design for comprehensive protection:\u003c\/strong\u003e Disengages both live conductors simultaneously, reducing the risk of arc flash and ensuring safer interlock with 240 V circuitry.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability:\u003c\/strong\u003e Built to withstand the rigors of heavy‑duty panels and continuous operation in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted current protection:\u003c\/strong\u003e Precisely rated at 40 A to safeguard feeders and branch circuits without nuisance tripping in normal load conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless compatibility with protection and metering:\u003c\/strong\u003e Optimized for use with systems that utilize potential transformers for relay signaling and measurement, enabling accurate fault sensing and data collection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eFeeder protection in industrial electrical panels that supply 240 V equipment and machinery.\u003c\/li\u003e \u003cli\u003eMotor control circuits where two-pole disconnection minimizes residual voltage and simplifies lockout\/tagout procedures.\u003c\/li\u003e \u003cli\u003eProtection for critical loads in manufacturing lines, packaging equipment, and processing systems operating on 240 V supplies.\u003c\/li\u003e \u003cli\u003eSystems integrating protection relays or metering equipment that rely on potential transformers for monitoring and fault indication.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy it matters for your operation\u003c\/h2\u003e\n\u003cp\u003eChoosing the QNPL2040 means selecting a circuit breaker designed to interrupt fault current effectively while preserving system stability. The 2-pole configuration ensures that both conductors are simultaneously isolated during a fault, which enhances safety, reduces equipment stress, and supports quick restoration after an interruption. Its 40 A rating aligns with common industrial loads, enabling reliable protection without excessive nuisance tripping in typical 240 V applications.\u003c\/p\u003e \u003ch2\u003eInstallation and best practices\u003c\/h2\u003e\n\u003cp\u003eFor optimal performance, ensure compatibility with your panel design and verify that wiring and terminations conform to applicable electrical codes. When used with protective relays and metering circuits, the potential transformer integration should be configured to provide timely fault signals without compromising measurement accuracy. Regular inspection of connections and periodic testing of trip functionality will help maintain reliable protection over time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Industrial","offers":[{"title":"Default Title","offer_id":46423258169506,"sku":"QNPL2040","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/industrial-qnpl2040","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}