{"product_id":"blue-sea-systems-7251-c-series-50a-double-pole-toggle-circuit-breaker-120-240v-ac-marine-main-branch-protection","title":"Blue Sea Systems 7251 C-Series Double Pole Toggle Circuit Breaker, 50A, 120\/240V AC \/ 80V DC","description":"\u003cp\u003eThe Blue Sea Systems 7251 is a C-Series double pole toggle circuit breaker rated at 50 amps, designed to protect 120\/240 volt AC circuits and DC systems up to 80 volts. It is frequently used as an AC main circuit breaker to switch both hot and neutral, or two hot lines, in 120\/240 volt AC branch applications. Because it is a double pole design, both poles trip together if either pole experiences an overcurrent fault, ensuring the entire circuit is de-energized rather than leaving one leg live.\u003c\/p\u003e\u003cp\u003eThe breaker uses a magnetic hydraulic, trip-free mechanism, meaning it cannot be held in the ON position during a fault current condition, and it is rated for 10,000 switching cycles at its rated amperage and voltage. Connections are made via a 1\/4\"-20 tin-plated brass terminal stud torqued to 35 in-lb maximum, and the breaker mounts using an included #6-32 stainless steel screw torqued to 6-8 in-lb. It operates across a wide temperature range, from -40 F to 185 F, making it suitable for marine environments exposed to heat and cold.\u003c\/p\u003e\u003cp\u003eFinished in white, the 7251 is part of the Blue Sea Systems C-Series family of double and triple pole toggle breakers, which share the same magnetic hydraulic trip-free design and voltage ratings across the amperage range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Blue Sea Systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 7251\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 50 Amps AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Voltage:\u003c\/strong\u003e 80V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage, Nominal Operating:\u003c\/strong\u003e 120\/240V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Operating Temperature:\u003c\/strong\u003e -40 C (-40 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Operating Temperature:\u003c\/strong\u003e 85 C (185 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching Cycles:\u003c\/strong\u003e 10,000 cycles at rated amps and volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Magnetic Hydraulic, Trip Free\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Stud:\u003c\/strong\u003e 1\/4\"-20 Tin-Plated Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Stud Torque:\u003c\/strong\u003e 35 in-lb maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Screw:\u003c\/strong\u003e #6-32 Stainless Steel (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Screw Torque:\u003c\/strong\u003e 6-8 in-lb recommended\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the amperage rating of the Blue Sea Systems 7251 circuit breaker?\u003c\/strong\u003e The 7251 is rated at 50 amps AC, part of the Blue Sea Systems C-Series double pole toggle breaker lineup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many poles does the 7251 circuit breaker have?\u003c\/strong\u003e The 7251 is a double pole (2-pole) circuit breaker, meaning it switches two conductors, such as hot and neutral, or two hot lines in a 120\/240 volt AC branch circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum voltage rating for the Blue Sea Systems 7251?\u003c\/strong\u003e The 7251 carries a maximum DC voltage rating of 80V DC, with a nominal AC operating voltage of 120\/240V AC.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 7251 breaker be used on both AC and DC circuits?\u003c\/strong\u003e Yes, the Blue Sea Systems 7251 is rated for 120\/240V AC nominal operation and up to 80V DC maximum, making it suitable for both AC and DC marine circuits within those limits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if only one pole of the 7251 trips?\u003c\/strong\u003e Because the 7251 is a double pole breaker, it will trip all poles together if any single pole experiences an overcurrent condition, fully de-energizing the protected circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature range of this breaker?\u003c\/strong\u003e The Blue Sea Systems 7251 operates from a minimum of -40 C (-40 F) up to a maximum of 85 C (185 F).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 7251 circuit breaker wired and mounted?\u003c\/strong\u003e Wiring connects via a 1\/4\"-20 tin-plated brass terminal stud torqued to 35 in-lb maximum, and the 7251 mounts with an included #6-32 stainless steel screw torqued to 6-8 in-lb recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many switching cycles is the 7251 rated for?\u003c\/strong\u003e The 7251 is rated for 10,000 switching cycles at its rated amperage and voltage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Blue Sea Systems 7251?\u003c\/strong\u003e The 7251 circuit breaker is finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 7251 circuit breaker weigh?\u003c\/strong\u003e The Blue Sea Systems 7251 weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 7251 a trip-free circuit breaker?\u003c\/strong\u003e Yes, the 7251 uses a magnetic hydraulic, trip-free design, meaning it cannot be held in the ON position during a fault current condition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 7251 double pole breaker and a triple pole version?\u003c\/strong\u003e The 7251 is a double pole breaker used to switch hot and neutral or two hot lines; a triple pole version in the same C-Series family is used as a 120\/240V AC main circuit breaker to switch both line conductors and neutral. Both double and triple pole versions trip all poles together if any one pole trips.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":48989511352539,"sku":"BSS-7251","price":125.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/7251_02f40558-e23d-479c-9f6c-74b165dd7f33.jpg?v=1784507625","url":"https:\/\/www.goodvibesmarina.com\/products\/blue-sea-systems-7251-c-series-50a-double-pole-toggle-circuit-breaker-120-240v-ac-marine-main-branch-protection","provider":"Good Vibes Marina","version":"1.0","type":"link"}