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Prevents excessive current and overload protection for Amps, Audio electronics,audio/video systems and accessories in car, boat, marine vehicles and bikesstops power surges from damaging your amps. it’s the really good one …they cost about 60 to 70 dollars if you look good…some places will try to nuke ya for 100 or more dollars… The Buss 285/series( IIRC) is good but a lighter duty MRCB… either are light years ahead of that device…the 285 is a little less money Than the 187. Unwanted Goods: In accordance with The Consumer Contracts Regulations (2015), you have a 14 working day 'cooling off period' in which you have the right to cancel your purchase and receive a full refund. Ampere range: 20A 30A 40A 50A 60A 80A 100A 150A High Current Circuit BreakerVoltage: 12V-24V DCFor car, boat, marine, bike use, etc. The heat generated by the excess current during an overload causes the contacts inside the breaker to come apart and break the circuit.
It is good practice not to allow the continuous current to exceed 75% of the fuse's rated value to accommodate momentary current surges that might cause the fuse to fatigue over time or blow unnecessarily (nuisance blow). g. connecting one or more pieces of equipment that draw more current than the circuit is designed to carry or, conversely, using cable of insufficient size for the current draw of the intended equipment. Having said that this is ideal it is nearly always impractical as it would lead to many fuses fitted throughout an electrical system. Generally now used in lower current applications such as audio head units and accessories (cigar lighter socket plugs etc. Circuit breakersprovide overload protection for the circuit in the same way that a fuse does (by breaking the circuit continuity) but, unlike a fuse, can be reset rather than having to be replaced.Whilst circuit breakers are very useful solution in certain applications it should be noted that a good quality fuse will ultimately be more reliable (there are no moving parts) so should be considered first, and where sensitive electronic equipment is involved a circuit breaker should never be used. The other reason for not fusing the starter circuit is that if the battery is disconnected from the alternator whilst it is turning (as would be the case if a fuse blew) the diodes in the alternator's rectifier can be damaged. This is important because if a section of cable shorts to ground it will only be protected if there is a fuse before the shorting point (otherwise the fuse will not experience the excess current because it will be outside of the short-circuit). Resettable: Manual reset button, the red button on the circuit breaker can be used as the main disconnect switch for the circuit and also as a kill switch.
I’d rather have a very fast fuse knowing that it limits my startup inrush current for devices plugged into the inverter (like motor startup). Each of the four circuits supplying the loads are then fused individually in the fuse box at the beginnin g of each circuit (and before the switches). Starter motors are normally the highest current draw electrical item on a vehicle as they have to crank the engine, and the current can reach several hundred Amps, especially with large diesel engines that have a high compression ratio.A good compromise is that every individual circuit should be fused as this provides a good degree of protection and at least allows you to narrow down the problem to one circuit. Protection: Prevents excessive current and overload protection for Amps, Audio electronics, audio/video systems and accessories in car, boat, marine vehicles and bikesstops power surges from damaging your amps. The installer is ultimately responsible for the safety of the system so if you are in any doubt, please consult a qualified electrician. Waterproof High Amp 150 Amp Circuit Breaker Resettable Fuse 42 Volts DC Maximum High current weatherproof circuit breakers with manual reset switch.
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