


Blue Sea 1231 120V AC 2 Sources - 50A - 1231
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Blue Sea 1231 120V AC 2 Sources - 50A - 1231120 Volt AC 2 Sources 50A Features: Backlight label positions Red "Reverse Polarity" LEDs installed Green "Power Available" LEDs installed Lockout slides prevent connecting multiple AC sources simultaneously Specifications: Source Selection: 2 Nominal Voltage: 120V AC Height: 4. 75" (120. 65mm) Width: 4. 88" (123. 95mm) Depth: 3. 00" (76. 2mm) Weight: 1. 71lb (0. 78kg) Includes: (2) 7577 A Series Raised Rocker Circuit Breaker Double Pole 50AWARNING:
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4.3 ★★★★★
Based on 361 reviews
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Product Reviews
★★★★★ 5
Excelente
Excelente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 4
Functions. No trigger,need relay for car install
Functions,but will not turn off. No remote wire,just positive & negative. Need relay to install correctly to use on-board fuse. Or connect to remote only to view voltage use. No instructions.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 29, 2025
★★★★★ 5
Good quality
Good quality
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Se ve excelente
Se ve de buena calidad, aún no lo instaló pero si se aprecia muy bueno.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Ez install
I really like how EZ it was to install, the display is handy tells you what your voltage is currently. Nice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
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