{"product_id":"siemens-qf120a-single-pole-20-amp-gfci-circuit-breaker","title":"Siemens QF120A Single Pole 20 AMP GFCI Circuit Breaker","description":"\u003cp data-start=\"356\" data-end=\"1148\"\u003eSiemens QF120A is a 1 pole, 20 amp GFCI circuit breaker that combines standard overcurrent protection with integrated ground fault detection for safer operation in wet area installations such as pool pumps, spas, and outdoor receptacles. Designed for 120 volt circuits with a 10 kA interrupt rating, the breaker monitors current imbalance with 5 mA trip sensitivity to shut off power quickly during hazardous leakage conditions. Its compact plug in configuration is compatible with Siemens Q series load centers and supports 14–10 AWG copper conductors for dependable residential or light commercial use. Built to UL and CSA safety standards, the QF120A provides reliable fault clearing and essential protection where water and electricity may come into contact.\u003c\/p\u003e\n\u003cp data-start=\"356\" data-end=\"1148\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The Siemens QF120A is the current model that has replaced the older QF120 model.\u003c\/p\u003e\n\u003ch3 data-start=\"1150\" data-end=\"1168\"\u003e\u003cstrong data-start=\"1154\" data-end=\"1168\"\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1169\" data-end=\"1887\"\u003e\n\u003cli data-start=\"1169\" data-end=\"1343\"\u003e\n\u003cp data-start=\"1171\" data-end=\"1343\"\u003e\u003cstrong data-start=\"1171\" data-end=\"1209\"\u003e20A \/ 120V Overcurrent Protection:\u003c\/strong\u003e Handles branch circuits for pool equipment, outdoor outlets, and spa systems while protecting against overloads and short circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1344\" data-end=\"1474\"\u003e\n\u003cp data-start=\"1346\" data-end=\"1474\"\u003e\u003cstrong data-start=\"1346\" data-end=\"1371\"\u003eBuilt In GFCI Safety:\u003c\/strong\u003e Detects ground fault leakage above 5 mA to reduce shock risk in wet or damp electrical environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1475\" data-end=\"1605\"\u003e\n\u003cp data-start=\"1477\" data-end=\"1605\"\u003e\u003cstrong data-start=\"1477\" data-end=\"1504\"\u003e10 kA Interrupt Rating:\u003c\/strong\u003e Provides strong fault clearing performance suitable for most residential load center applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1606\" data-end=\"1743\"\u003e\n\u003cp data-start=\"1608\" data-end=\"1743\"\u003e\u003cstrong data-start=\"1608\" data-end=\"1633\"\u003ePlug In Installation:\u003c\/strong\u003e 1 pole breaker fits Siemens Q series load centers for straightforward installation or retrofit replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1744\" data-end=\"1887\"\u003e\n\u003cp data-start=\"1746\" data-end=\"1887\"\u003e\u003cstrong data-start=\"1746\" data-end=\"1779\"\u003eSupports Multiple Wire Sizes:\u003c\/strong\u003e Works with 14–10 AWG copper and compatible aluminum conductors to meet varying circuit design requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3157\" data-end=\"3176\"\u003eAdditional Info\u003c\/h3\u003e\n\u003cp data-start=\"3177\" data-end=\"3628\"\u003eThe Siemens QF120A is a 1-pole, 20 amp GFCI breaker engineered for 120-volt outdoor and wet-location circuits, including pool and spa equipment pads. This section helps Wholesale Pool Mart customers confirm compatibility, compare local pricing, and prepare for electrical service visits where GFCI protection must meet code requirements. Its 5 mA trip sensitivity and 10 kA interrupt rating support safe residential and light-commercial installations.\u003c\/p\u003e\n\u003ch2 data-start=\"3630\" data-end=\"3668\"\u003eCompatibility and Fitment Details\u003c\/h2\u003e\n\u003cp data-start=\"3669\" data-end=\"3741\"\u003eService professionals often verify breaker type before arriving on site.\u003c\/p\u003e\n\u003ch4 data-start=\"3743\" data-end=\"3810\"\u003eIs the QF120A compatible with Siemens Q-series load centers?\u003c\/h4\u003e\n\u003cp data-start=\"3811\" data-end=\"3961\"\u003eYes, the plug-in mounting style is designed specifically for Siemens Q-series panels. Technicians should verify the panel model prior to installation.\u003c\/p\u003e\n\u003ch4 data-start=\"3963\" data-end=\"4033\"\u003eCan this breaker be used for dedicated pool equipment circuits?\u003c\/h4\u003e\n\u003cp data-start=\"4034\" data-end=\"4184\"\u003eYes, the QF120A is frequently used for pumps, lights, and outdoor outlets that require 120-volt, 20-amp GFCI protection under modern electrical codes.\u003c\/p\u003e\n\u003ch4 data-start=\"4186\" data-end=\"4247\"\u003eDoes this model replace earlier Siemens GFCI breakers?\u003c\/h4\u003e\n\u003cp data-start=\"4248\" data-end=\"4399\"\u003eIn most cases yes, provided the load center is part of the supported Siemens lineup. It maintains the same pole configuration and connection interface.\u003c\/p\u003e\n\u003ch2 data-start=\"4401\" data-end=\"4456\"\u003eInstallation, Service Notes, and Field Preparation\u003c\/h2\u003e\n\u003cp data-start=\"4457\" data-end=\"4554\"\u003eWholesale Pool Mart customers often purchase multiple breakers when preparing for service routes.\u003c\/p\u003e\n\u003ch4 data-start=\"4556\" data-end=\"4608\"\u003eWhat conductor sizes does the QF120A support?\u003c\/h4\u003e\n\u003cp data-start=\"4609\" data-end=\"4748\"\u003eIt supports 14–10 AWG copper conductors, allowing flexible use across multiple branch circuit configurations needed in field installations.\u003c\/p\u003e\n\u003ch4 data-start=\"4750\" data-end=\"4810\"\u003eWhat causes nuisance tripping during initial testing?\u003c\/h4\u003e\n\u003cp data-start=\"4811\" data-end=\"4963\"\u003eIncorrect neutral placement, shared neutrals, or downstream wiring faults are common causes. Technicians typically isolate the load to verify the cause.\u003c\/p\u003e\n\u003ch4 data-start=\"4965\" data-end=\"5032\"\u003eHow should electricians test the breaker after installation?\u003c\/h4\u003e\n\u003cp data-start=\"5033\" data-end=\"5192\"\u003eThey perform a load test, confirm proper GFCI trip function, and verify the neutral return path to ensure the breaker’s sensor can detect imbalance accurately.\u003c\/p\u003e\n\u003ch2 data-start=\"5194\" data-end=\"5245\"\u003eLocal Pricing, Stock, and Service Coordination\u003c\/h2\u003e\n\u003cp data-start=\"5246\" data-end=\"5323\"\u003eThis section helps Wholesale Pool Mart customers plan efficient service work.\u003c\/p\u003e\n\u003ch4 data-start=\"5325\" data-end=\"5382\"\u003eCan I check local pricing across nearby locations?\u003c\/h4\u003e\n\u003cp data-start=\"5383\" data-end=\"5480\"\u003eYes, many service teams compare pricing to prepare estimates for pool and spa electrical updates.\u003c\/p\u003e\n\u003ch4 data-start=\"5482\" data-end=\"5538\"\u003eHow do I confirm stock levels for multiple units?\u003c\/h4\u003e\n\u003cp data-start=\"5539\" data-end=\"5656\"\u003eProvide your route schedule, and staff can check availability across nearby stores to support same-day service calls.\u003c\/p\u003e\n\u003ch4 data-start=\"5658\" data-end=\"5725\"\u003eDo technicians commonly buy related parts with this breaker?\u003c\/h4\u003e\n\u003cp data-start=\"5726\" data-end=\"5844\"\u003eYes, many pick up outdoor junction boxes, conduit fittings, or weatherproof covers for complete installation packages.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":54552190681379,"sku":"QF120A","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0914\/0987\/5235\/files\/SiemensQF120ASinglePole20AMPGFCICircuitBreakerWholesalePoolMart_3.jpg?v=1766078089","url":"https:\/\/wholesalepoolmart.com\/products\/siemens-qf120a-single-pole-20-amp-gfci-circuit-breaker","provider":"Wholesale Pool Mart","version":"1.0","type":"link"}