{"product_id":"sea-dog-420820-1-thermal-ac-dc-circuit-breaker-20-amp-push-to-reset-panel-mount-marine-breaker","title":"Sea-Dog 420820-1 Thermal AC\/DC Circuit Breaker, 20 Amp, Panel Mount, UL Listed A-0701","description":"\u003cp\u003eThe Sea-Dog 420820-1 is a thermal AC\/DC circuit breaker rated for 20 Amps, built to protect an electrical circuit from damage caused by excess current. Unlike a sacrificial fuse that must be replaced once it blows, this breaker is resettable: after it trips, a simple push-to-reset action restores the circuit without swapping any parts. The housing is constructed of molded Bakelite for durability, with quick-connect, terminal-style, stamped brass contacts for a secure electrical connection. The breaker is UL Listed under A-0701 and is rated for 125-250 VAC and 32 VDC, covering both AC and DC circuits on board.\u003c\/p\u003e\u003cp\u003eVibration and shock resistant, the 420820-1 is built for the marine environment and uses a compact, panel-mounted design that fits standard breaker panel cutouts. It serves as an economical alternative to magnetic circuit breakers while still delivering reliable, resettable overcurrent protection. For boats operating in wet conditions, Sea-Dog offers an optional Thermal Breaker Boot (420839, sold separately) that fits over the breaker to provide additional protection against moisture.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sea-Dog\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 420820-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 20 Amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Voltage Rating:\u003c\/strong\u003e 125-250 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Voltage Rating:\u003c\/strong\u003e 32 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Breaker Type:\u003c\/strong\u003e Standard, push-to-reset (resettable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Material:\u003c\/strong\u003e Molded Bakelite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Material:\u003c\/strong\u003e Stamped brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Panel mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e UL Listed (A-0701)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.082 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 035514420488\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Accessory:\u003c\/strong\u003e Sea-Dog 420839 Thermal Breaker Boot (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat amperage is the Sea-Dog 420820-1 circuit breaker rated for?\u003c\/strong\u003e The Sea-Dog 420820-1 is rated for 20 Amps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 420820-1 breaker resettable after it trips?\u003c\/strong\u003e Yes, it is a push-to-reset thermal breaker, meaning it can be reset after tripping instead of being replaced like a fuse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage does this breaker support?\u003c\/strong\u003e The 420820-1 is rated for 125-250 VAC and 32 VDC, covering both AC and DC circuits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the housing of the 420820-1 made of?\u003c\/strong\u003e The housing is molded Bakelite, with stamped brass, quick-connect terminal-style contacts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sea-Dog 420820-1 UL Listed?\u003c\/strong\u003e Yes, this breaker carries UL Listing A-0701.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does a thermal breaker like the 420820-1 differ from a fuse?\u003c\/strong\u003e A thermal breaker is resettable after it trips, while a fuse is sacrificial and must be replaced once it blows; the 420820-1 uses a push-to-reset design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 420820-1 be used in wet marine environments?\u003c\/strong\u003e It is vibration and shock resistant and designed for marine use; for added protection in wet environments, Sea-Dog offers the optional 420839 Thermal Breaker Boot, sold separately.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of terminal connection does this breaker use?\u003c\/strong\u003e The 420820-1 uses quick-connect, terminal-style, stamped brass contacts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sea-Dog 420820-1 weigh?\u003c\/strong\u003e It weighs 0.082 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many poles does the 420820-1 have?\u003c\/strong\u003e This is a single-pole (1 pole) circuit breaker.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 420820-1 designed for panel mounting?\u003c\/strong\u003e Yes, it features a compact, panel-mounted design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there an accessory to add extra water protection to this breaker?\u003c\/strong\u003e Yes, the Sea-Dog 420839 Thermal Breaker Boot fits the 420820-1 and other breakers in the series to add protection in wet environments; it is sold separately.\u003c\/p\u003e","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":48988779020507,"sku":"S-D-420820-1","price":4.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/5672_f335cce4-2dfb-4391-a450-8b24ae3c6ae7.jpg?v=1784429430","url":"https:\/\/www.goodvibesmarina.com\/products\/sea-dog-420820-1-thermal-ac-dc-circuit-breaker-20-amp-push-to-reset-panel-mount-marine-breaker","provider":"Good Vibes Marina","version":"1.0","type":"link"}