








⚡ Break limits, not circuits — power your future with DIHOOL!
The DIHOOL 400 Amp DC Circuit Breaker is a heavy-duty, 2-pole disconnect switch designed for high-power DC systems up to 1500V. Featuring advanced thermal magnetic trip technology and silver-enriched contacts, it delivers reliable overload and short-circuit protection with a 20kA breaking capacity. Ideal for solar installations, battery banks, and demanding electrical setups, it ensures safety and durability in critical applications.













| ASIN | B0CJB9SN63 |
| Best Sellers Rank | #86,461 in Automotive ( See Top 100 in Automotive ) #103 in Automotive Replacement Circuit Breaker Switches |
| Brand | DIHOOL |
| Circuit Breaker Type | Standard |
| Current Rating | 400 Amps |
| Date First Available | September 19, 2023 |
| Item Weight | 12.54 pounds |
| Item model number | DHM3Z-400A |
| Manufacturer | DIHOOL ELECTRIC |
| Mounting Type | Screw Mount |
| Number Of Poles | 2 |
| Product Dimensions | 7.88"D x 11.81"W x 7.26"H |
P**D
Es de materiar resistente
P**G
HEAVY Duty breaker for DC systems
This is a beefy heavy duty breaker. I am using it combined with a T-class fuse between my battery bank and my 5k solar inverter. I like that it includes lugs for my battery cables.
A**7
Nice
Well built, solid breaker, quality appears to be good. I’d 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!
H**A
Muy bueno precio y me funcionó bien
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.
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
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.
Trustpilot
3 weeks ago
1 day ago