{"product_id":"siemens-q1515-twin-15-amp-circuit-breaker-type-qt-tandem","title":"Siemens Q1515 Twin 15-Amp Circuit Breaker — Type QT Tandem, 10 kAIC","description":"\u003cp\u003eThe Siemens Q1515 twin circuit breaker fits two independent 15-amp circuits into the space of one, buying back panel slots in a load centre that's run out of room before it's run out of circuits. Type QT tandem construction stacks two single-pole 15-amp breakers in a single 1-inch footprint, so a finished basement or added lighting run doesn't force a subpanel just to land one more circuit. A calibrated thermal-magnetic mechanism handles both failure modes on each circuit: it rides out the slow heat of a sustained overload without nuisance tripping, then opens hard and fast on a dead short, with a 10 kAIC interrupting rating on a 120\/240V service. The rejection feature seats it only in panel positions rated for tandem breakers — the physical guard that keeps a load centre inside its listed circuit count, rather than overfilled past what the panel label allows. CSA-certified and UL-listed, sourced through verified Siemens supply — not the refurbished or counterfeit stock that circulates on open marketplaces — it earns two circuits from a single slot and asks nothing further of it.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":42512959766622,"sku":"Q1515","price":26.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/0073\/8142\/files\/Q1515.png?v=1772819135","url":"https:\/\/gdbuildingsupply.com\/products\/siemens-q1515-twin-15-amp-circuit-breaker-type-qt-tandem","provider":"Good Day Building Supply Inc.","version":"1.0","type":"link"}