{"product_id":"siemens-qjh23b110a02-circuit-breaker","title":"Siemens | QJH23B110A02 | Circuit Breaker | 110A | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens QJH23B110A02 circuit breaker is a purpose-built 3-pole protective device designed for reliable overcurrent protection in three-phase 240V systems. When you’re maintaining, retrofitting, or replacing an aging panel, this Siemens part delivers a precise fit and seamless operation, reducing downtime and ensuring your electrical distribution stays safe and compliant.\u003c\/p\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 110A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QJH23B110A02\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand\/Series:\u003c\/strong\u003e Siemens\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this Siemens circuit breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact fit for compatible Siemens panels:\u003c\/strong\u003e The QJH23B110A02 is the best reference for matching compatibility, helping you avoid the guesswork that comes with aftermarket replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for three-phase systems:\u003c\/strong\u003e Ideal for commercial, industrial, or multifloor residential setups where balanced protection across all phases is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable 110A protection:\u003c\/strong\u003e Designed to interrupt fault current and protect wiring and equipment from overloads, supporting safer operation of your critical circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-friendly replacement:\u003c\/strong\u003e A straightforward upgrade or swap that preserves existing wiring configurations and panel architecture.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use scenarios\u003c\/h2\u003e\n\u003cp\u003eThis 3-pole, 110A, 240V circuit breaker is well-suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and retrofit projects that require a like-for-like Siemens replacement\u003c\/li\u003e \u003cli\u003eReplacing failing breakers in Siemens panels to restore reliable protection\u003c\/li\u003e \u003cli\u003eUpgrading or expanding three-phase electrical distribution in small to mid-size commercial applications\u003c\/li\u003e \u003cli\u003eElectrical control circuits and equipment fed from 240V three-phase supply that demand dependable overload protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical installation and safety guidance\u003c\/h2\u003e\n\u003cp\u003eTo maximize safety and performance, follow these best practices:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways power down the main and verify zero voltage before handling any panel components.\u003c\/li\u003e \u003cli\u003eConfirm the panel’s rating and the breaker's compatibility using the part number \u003cstrong\u003eQJH23B110A02\u003c\/strong\u003e as the primary reference.\u003c\/li\u003e \u003cli\u003eEngage a qualified electrician to perform installation and testing to meet local electrical codes and standards.\u003c\/li\u003e \u003cli\u003eInspect both the breaker and the panel for signs of wear, corrosion, or damage prior to replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eCare and long-term considerations\u003c\/h2\u003e\n\u003cp\u003eStore spare units in a clean, dry environment to prevent corrosion. When installed, monitor for smooth operation and ensure the breaker trips predictably under fault conditions. Keeping a compatible Siemens replacement on hand as part of a preventive maintenance plan can reduce unplanned outages and extend the life of your electrical distribution system.\u003c\/p\u003e \u003ch2\u003eCompatibility note\u003c\/h2\u003e\n\u003cp\u003eAlways verify fit and ratings before ordering. The part number \u003cstrong\u003eQJH23B110A02\u003c\/strong\u003e is the most reliable reference for ensuring a correct match with your Siemens panel and current electrical configuration.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427415871650,"sku":"QJH23B110A02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qjh23b110a02-circuit-breaker-110a-3-pole-240v-338.webp?v=1789719888","url":"https:\/\/www.ampstate.com\/products\/siemens-qjh23b110a02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}