{"product_id":"siemens-hed41b090-90a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens HED41B090 - 90 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HED41B090\u003c\/strong\u003e is a 90 A, 277 V, 1-pole bolt-on molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers.\u003c\/p\u003e\n\u003cp\u003eSecure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping prevent loose contacts that can lead to interruptions or unreliable protection over time.\u003c\/p\u003e\n\u003cp\u003eThe thermal-magnetic trip unit combines precise thermal overload protection with fast magnetic response for short circuits, delivering stable, repeatable protection performance across varying loads and conditions.\u003c\/p\u003e\n\u003cp\u003eDesigned to be compatible with matching OEM Siemens load centers and panelboards, this breaker ensures proper fit, electrical characteristics, and reliable coordination within your distribution system.\u003c\/p\u003e\n\u003cp\u003eIdeal for residential, commercial, and light industrial applications—whether you’re upgrading a service panel, replacing a failed breaker, or expanding circuits in a 277 V environment.\u003c\/p\u003e\n\u003cp\u003eKey specifications at a glance: 90 A rating, 277 V, 1-pole, bolt-on mounting, molded case construction, intended for branch circuit overcurrent and short-circuit protection in panelboards and load centers.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eWhat it solves\u003c\/strong\u003e: Reliable single-pole protection for branch circuits up to 277 V, preventing overloads and short circuits from compromising safety and uptime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhere to use\u003c\/strong\u003e: Siemens-compatible panelboards and load centers in homes, offices, retail spaces, and light industrial facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhy bolt-on matters\u003c\/strong\u003e: A secure mounting method minimizes bus connection issues and mechanical vibration–related wear over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHow it compares\u003c\/strong\u003e: Provides a purpose-built Siemens solution that fits OEM equipment without adapters, preserving intended trip characteristics and system coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCare and installation tips\u003c\/strong\u003e: Verify panel compatibility, follow installation torque guidance from the manufacturer, and match the breaker rating to the protected circuit’s requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePurchase with confidence from AmpState—the Siemens HED41B090 is ready to install in compatible panels, delivering dependable protection for critical electrical circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349799653538,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_97ecf8b3-e625-46f8-b733-63a5652d1052.png?v=1764157153","url":"https:\/\/www.ampstate.com\/products\/siemens-hed41b090-90a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}