{"product_id":"siemens-hed43m090","title":"Siemens HED43M090 90A 3-Pole 480 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HED43M090\u003c\/strong\u003e is a high-performance 90A, 3-pole 480 V circuit breaker with an integrated potential transformer, purpose-built for demanding industrial power distribution. This compact, Siemens-designed solution streamlines protection, monitoring, and control in one rugged package, making it ideal for critical 3‑phase systems where reliability and precise sensing matter.\u003c\/p\u003e \u003cp\u003eKey features that set this breaker apart:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e90 A current rating\u003c\/strong\u003e for robust protection of motors, feeders, and distribution circuits in industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e supports balanced protection across all phases in 480 V systems, enhancing protection coordination and fault clearance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated potential transformer\u003c\/strong\u003e enables direct sensing and metering for monitoring relays, energy management, and SCADA interfaces without extra wiring complexity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for Siemens ecosystems\u003c\/strong\u003e with seamless integration into compatible panels and protection schemes, reducing installation time and potential wiring errors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, field-reliable construction\u003c\/strong\u003e built to stand up to industrial environments, helping minimize maintenance downtime and extend service life.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases include data centers, manufacturing lines, HVAC and large mechanical systems, and motor control centers where 480 V three-phase power requires reliable protection plus accurate monitoring. The HED43M090 is particularly valuable where you need both circuit protection and instantaneous feedback for protection relays or energy meters, all from a single, trusted Siemens component.\u003c\/p\u003e \u003cp\u003eWhy choose this unit over standard breakers?\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSimplified wiring and monitoring\u003c\/strong\u003e with an integrated potential transformer reduces the need for separate sensing transformers and simplifies field installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnhanced protection coordination\u003c\/strong\u003e through precise current sensing across all three phases, supporting more accurate trip decisions and safer shutdowns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens reliability and compatibility\u003c\/strong\u003e ensures consistent performance within Siemens panels and protection schemes, minimizing integration challenges.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: \u003cstrong\u003e90 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage rating: \u003cstrong\u003e480 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart Number: \u003cstrong\u003eHED43M090\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eProduct type: \u003cstrong\u003eCircuit Breaker with Potential Transformer\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor professionals designing or upgrading industrial power architectures, the Siemens HED43M090 delivers dependable protection with built-in sensing capabilities, helping you achieve safer operation, streamlined installation, and improved visibility into your electrical distribution. This is the choice for environments where robust protection and accurate monitoring aren’t optional—they’re essential.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423588241570,"sku":"HED43M090","price":5863.0,"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\/siemens-hed43m090","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}