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bulvack 300 amp circuit breaker with manual reset | car marine trolling motors boat atv power protection fuse | audio system 12v-48v dc (300a) logo

BULVACK 300 Amp Circuit Breaker with Manual Reset | Car Marine Trolling Motors Boat ATV Power Protection Fuse | Audio System 12V-48V DC (300A) Review

7

·

Terrible

Revainrating 2 out of 5  
Rating 
1.9
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img 4 attached to BULVACK 300 Amp Circuit Breaker with Manual Reset | Car Marine Trolling Motors Boat ATV Power Protection Fuse | Audio System 12V-48V DC (300A)

Details

BrandBULVACK
Current Rating300 Amps
Voltage48 Volts
Mounting TypePanel Mount, Surface Mount
Number Of Poles3

Description of BULVACK 300 Amp Circuit Breaker with Manual Reset | Car Marine Trolling Motors Boat ATV Power Protection Fuse | Audio System 12V-48V DC (300A)

【IGNITION PROTECTED】 The circuit breaker can protects your trolling motor from electrical damage, prevents excessive current and stops power surges from damaging Amps. 【POWER RATING】 Current 50A 80A 100A 150A 200A 250A 300A, voltage 12-48V DC, yellow manual reset button, accessories Including wire lugs 2pcs and copper washer 4pcs, improve the conductivity. 【MANUAL RESET】 Manual control and easy to operate with manual reset arm, also can be used as a on/off button switch for the battery or DC sound amplifier system. 【EASY INSTALLATION】Surface Mount, mount on panel or firewall. Water resistant housing, protective stud insulator included, splash & dust Proof. 【WIDE APPLICATION】 Mainly used for car audio and Amps protection and in trucks, boat, RVs , marine, buses ect; also used in battery charges and DC sound system.

Reviews

Global ratings 7
  • 5
    1
  • 4
    0
  • 3
    0
  • 2
    2
  • 1
    4

Type of review

Revainrating 5 out of 5

Error already occurred, open circuit in the on position

Error already occurred, the switch is in the on position but behaves as if it were open. Also acted as a large resistor, sometimes causing a large voltage drop before failing completely.

Pros
  • Delivery was very fast
Cons
  • Not sure

Revainrating 2 out of 5

So far, so good. - Spares

I am using this to replace the 200 amp version which gets a warning and trips at around 30 amps. The reviews say the 200 amp circuit breaker will fail at around 65 amps and has a significant voltage drop when hot, which I've also experienced. So far this 300 amp switch is holding up well.

Pros
  • Highly rated by testers for support and durability
Cons
  • Only available in white

Revainrating 1 out of 5

Terminals too small for 300A

Compare other vendors 200A breaker with this 300A unit and 100A breaker. It is clear that the terminal studs of this 300A circuit breaker are undersized for the 2/0 wire clamp. It comes with 6x1/4 tips. You can't run 300 amps through 6AWG wire without burning the circuit.

Pros
  • GOLS Certificate
Cons
  • Interval

Revainrating 1 out of 5

I have no complaints

I gave the water resistance a one because if the thing gets wet something goes wrong. It lets electricity through. It stops when there is too much current. Has a nice button to press if you want to turn off everything behind it. Brackets good, I will compare all similar switches to this one in the future.

Pros
  • The best
Cons
  • Could have chosen a newer model

Revainrating 2 out of 5

Overheating and voltage drop with no shutdown

Got this for my 12v RV inverter system and what a disappointment. It operates at 115 amps for several minutes with a 90mV drop across the terminals. So far, so good. Then, within a few seconds, the voltage drop suddenly increased to 160mV (still at 115 amps) and then the RV inverter shut down with an undervoltage alarm. To be fair, at least the switch didn't trip, but that unreliable voltage drop makes it useless for my inverter.

Pros
  • MANUAL RESET
Cons
  • Doubt

Revainrating 1 out of 5

Parasitic brownouts and inverter turns off

Need better post insulators. Special care should be taken when installing on top of batteries in a metal battery box. After a few weeks, voltage fluctuations occur and the inverter shuts down with an undervoltage alarm. I was able to run a TV, fridge, microwave and small vacuum cleaner prior to installation which meant I wasn't even close to maxing out the inverter without issues. After installation, I can't even start the vacuum cleaner without turning off the inverter. That's a few days…

Pros
  • WIDE APPLICATION
Cons
  • Long delivery time

Revainrating 1 out of 5

Too easy to break when installing. Not for professional use

As a master electrician with 45 years of experience, I have installed more equipment than I can count. In all these years this is the first circuit breaker I've broken. Due to the limited space I planned to use it in my RV between the inverter and the batteries. As it turns out, I put the old 200 amp fuse back in. Due to lack of time I don't have time to exchange it before departure. I was disappointed with how easily this 150 amp circuit breaker broke when tightening the mounting screws. I…

Pros
  • DETECTOR
Cons
  • Unbelievable price