{"product_id":"siemens-heb1b040b-40a-1p-277v-circuit-breaker","title":"Siemens HEB1B040B 40A 1P 277V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens HEB1B040B, a purpose-built 40A, 1-pole circuit breaker designed for 277V distribution in panelboards and load centers. This device protects critical circuits while keeping your BOM aligned to the original Siemens part number, making replacements straightforward and procurement consistent.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part and purpose\u003c\/strong\u003e — Siemens HEB1B040B is a genuine 1-pole, 40-amp breaker intended for single-phase 277V circuits in commercial and industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePanel-ready protection\u003c\/strong\u003e — Ideal for panelboards, load centers, and general electrical distribution where reliable overcurrent protection is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBOM-aligned replacements\u003c\/strong\u003e — Stock this part to preserve the original equipment configuration and simplify documentation with the exact part number.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable availability\u003c\/strong\u003e — Available from AmpState to support quick replacements and service continuity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExpert compatibility support\u003c\/strong\u003e — If you’re unsure about fit, message AmpState to confirm compatibility, cross-reference, and part-number matching.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases and scenarios:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a blown breaker in existing Siemens panelboards to restore protected circuits without altering wiring or labeling.\u003c\/li\u003e \u003cli\u003eMaintaining spare inventory that matches the exact original part number for service contracts or facility maintenance schedules.\u003c\/li\u003e \u003cli\u003e stocking panels that operate at 277V where single-pole protection is required for lighting, outlets, and small motor circuits in commercial spaces.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes this breaker stand out:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eGenuine Siemens part\u003c\/strong\u003e with the exact HEB1B040B number ensures compatibility with original equipment and simplifies procurement records.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277V single-pole design\u003c\/strong\u003e targets specific commercial and industrial distribution needs, reducing the risk of mismatched components in stock.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore purchasing, verify your panel type and the original part number to ensure a perfect fit and proper labeling.\u003c\/li\u003e \u003cli\u003eUse AmpState’s compatibility assistance to confirm alignment with your panelboard or load center model.\u003c\/li\u003e \u003cli\u003eKeep this 40A breaker on hand as a reliable spare for maintenance windows to minimize downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eReady to secure the right replacement or stocking part? The Siemens HEB1B040B is available now from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412775653538,"sku":"HEB1B040B","price":878.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-heb1b040b-40a-1p-277v-circuit-breaker-ampstate-breakers-546.webp?v=1789026391","url":"https:\/\/www.ampstate.com\/products\/siemens-heb1b040b-40a-1p-277v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}