{"product_id":"square-d-q1b3701021-circuit-breaker","title":"Square D | Q1B3701021 | Circuit Breaker | 70A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eDesigned for demanding electrical installations, the Square D Q1B3701021 70A, 3-Pole, 240V Bolt-On Circuit Breaker is built for reliable protection in panels that accept bolt-on style devices. Whether you're performing a maintenance swap, a retrofit, or a replacement, this breaker keeps your 3-phase or 240V circuits safely controlled with precise trip performance.\u003c\/p\u003e \u003cp\u003eKey specifications\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 70 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e Q1B3701021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical use:\u003c\/strong\u003e maintenance, retrofit, replacement in compatible Square D panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this bolt-on breaker stands out\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eSecure bolt-on mounting provides a solid, vibration-resistant connection that stays engaged in demanding panel environments.\u003c\/li\u003e\n\u003cli\u003ePrecisely matched to Square D panels that accept bolt-on 3-pole 70 A devices, ensuring dependable tripping characteristics and consistent electrical protection.\u003c\/li\u003e\n\u003cli\u003eClear compatibility reference: the part number Q1B3701021 is the most reliable way to verify fit before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eUpgrading service or motor circuits in commercial or industrial panels that run on 240V with 3-phase loads.\u003c\/li\u003e\n\u003cli\u003eReplacing a failed or obsolete breaker in panels that specify bolt-on 3-pole 70 A devices.\u003c\/li\u003e\n\u003cli\u003eRetrofits where a similar amperage and mounting style is required to maintain panel catalog consistency.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation notes\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eBefore ordering, confirm that your panel model accepts bolt-on, 3-pole 70 A, 240V devices and that the Q1B3701021 matches the panel’s catalog listing.\u003c\/li\u003e\n\u003cli\u003eHave a qualified electrician perform installation, ensuring the power is off and the panel is de-energized during replacement.\u003c\/li\u003e\n\u003cli\u003eFollow all applicable electrical codes and the panel manufacturer’s instructions for mounting torque and wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46427238891682,"sku":"Q1B3701021","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-q1b3701021-circuit-breaker-70a-3-pole-240v-bolt-995.webp?v=1789691305","url":"https:\/\/www.ampstate.com\/products\/square-d-q1b3701021-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}