⚡ Power up with confidence — the breaker that never quits!
The DIHOOL 400 Amp DC Circuit Breaker is a heavy-duty, bidirectional switch designed for high-power DC systems up to 1500V. Featuring thermal magnetic trip technology and silver-enriched contacts, it delivers precise overload and short-circuit protection with a robust 20kA breaking capacity. Ideal for solar, battery, marine, and industrial applications, it ensures safety and durability in demanding environments.
R**O
Recommend
Super good I am recommend
G**G
Big. Massive. WOW
If she ever says you gotta small breaker just whip this one out!!!! What a massive piece of equipment. I am a grown man and i can hardly flip the breaker on/off. Heavy duty!!!!!! Idk if it works takes and army to trip it!
S**I
Poor design
Difficult to mount on a flat surface, it came missing a nut. It is near impossible to fit 4/0 battery head
B**H
Solid construction
Solid construction and good customer support. (Re-engineering on my home solar). Was able to exchange this size for their 200 AMP model.
T**.
No negatives I can find. Large, heavy.
This is a large, heavy-duty circuit breaker. I believe they have a newer, white version that is a bit heavier. However, I have no reason to believe this would not trip under surge. Thanks.
P**Y
Very well made and strong breaker
I purchased the 500 amp version for a solar installation with a large inverter. This unit is extremely well made and very robust.
D**R
Use at your own risk.
Not UL listed. Meaning in the United States any electrical Inspector will fail you on it. All electrical equipment in the United States are required to be UL listed.
P**S
No Paperwork disclosing ...
directionality. Is this a bi-directional switch or will it only trip if the load side is shorted. No way to know as no paperwork discloses this, the listing does not disclose this. The directional ones catch fire if it shorts on the opposite side of the switch. If NOT bidirectional Scenario 1: The Inverter (load side) shorts, breaker trips as designed. If NOT bidirectional Scenario 2: The batteries ("supply side") shorts, The current overheats the contact point, does not trip, and the breaker catches on fire. Non-bidirectional breakers banned in Australia after many house fires when battery shorts. I also had to install breakers on each battery to guard against this as I have no way to test this breaker without risking the $117 purchase price.
Trustpilot
2 months ago
5 days ago
