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The Blue Sea Systems 7289 is an 80A C-Series triple pole toggle breaker in white, with 5,000 ampere interrupt capacity.
Pole count decides the job here. A double pole breaker used as a 120 volt AC main switches hot and neutral. A triple pole like this is used as a 240 volt AC main, switching both lines and the neutral together. Ordering the wrong pole count leaves a conductor live behind an open main, which is not what anyone working downstream would assume.
On a multi-pole breaker a trip in any one pole opens all of them, so a fault on one leg does not leave the others live. A half-dead system is harder to diagnose than a dead one, and more dangerous to work on.
Five thousand amperes of interrupt capacity is what ABYC calls for in 120/240 volt 50 ampere main protection. The trip free design cannot be held on during a fault current condition, so a fault stays disconnected rather than being overridden by hand. Explore more marine circuit breakers.
The Blue Sea Systems 7289 is an 80A C-Series triple pole toggle breaker in white, with 5,000 ampere interrupt capacity.
Pole count decides the job here. A double pole breaker used as a 120 volt AC main switches hot and neutral. A triple pole like this is used as a 240 volt AC main, switching both lines and the neutral together. Ordering the wrong pole count leaves a conductor live behind an open main, which is not what anyone working downstream would assume.
On a multi-pole breaker a trip in any one pole opens all of them, so a fault on one leg does not leave the others live. A half-dead system is harder to diagnose than a dead one, and more dangerous to work on.
Five thousand amperes of interrupt capacity is what ABYC calls for in 120/240 volt 50 ampere main protection. The trip free design cannot be held on during a fault current condition, so a fault stays disconnected rather than being overridden by hand. Explore more marine circuit breakers.
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