{"product_id":"siemens-bqd170-70a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens BQD170 - 70 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens BQD170 is a rugged, single-pole bolt-on molded case circuit breaker engineered to protect essential branch circuits in panelboards and load centers. With a 70 A rating and 277 V operation, this unit is purpose-built for reliable overcurrent and short-circuit protection in a variety of settings—from home electrical panels to commercial spaces and light industrial installations.\u003c\/p\u003e \u003ch2\u003eKey advantages that matter in the field\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the busbar, helping maintain consistent electrical performance in environments where movement or vibration is common.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal overload protection with fast magnetic tripping for short circuits, reducing nuisance trips while preserving safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is designed to work with matching Siemens OEM load centers and panelboards, ensuring straightforward installation and reliable overall system integration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial projects, making it a flexible choice for various distribution schemes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: BQD170\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 70 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 277 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 1\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker matters for your electrical system\u003c\/h3\u003e\n\u003cp\u003eOutfitting a panelboard or load center with the BQD170 ensures you have a dependable line of defense against electrical faults. The bolt-on design minimizes the risk of bus connection loosening in installations subject to vibration or movement, while the thermal-magnetic protection provides precise tripping behavior that you can count on during both routine loads and fault conditions. By aligning with Siemens OEM hardware, this breaker helps you maintain consistent protection across your distribution network without compatibility questions.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing a single-pole protection device in a 277 V commercial lighting circuit or other 277 V branch circuits\u003c\/li\u003e \u003cli\u003eInstalling in new-build or retrofit panelboards where Siemens BQD-series compatibility is required\u003c\/li\u003e \u003cli\u003eElectrical rooms in small offices, retail spaces, or light industrial facilities that demand reliable, long-term protection from overcurrent and short circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens BQD170, you’re choosing a focused, performance-driven solution that prioritizes secure mounting, dependable protection, and seamless compatibility—delivering peace of mind for electrical distributions from simple residences to modest commercial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349768065186,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-bqd170-70-a-277-v-1-pole-bolt-on-circuit-breaker-ampstate-871.webp?v=1788722550","url":"https:\/\/www.ampstate.com\/products\/siemens-bqd170-70a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}