DC Miniature Circuit Breaker, 2 Pole 1000V 40 Amp Isolator for Solar PV System, Thermal Magnetic Trip, DIN Rail Mount, Chtaixi DC Disconnect Switch C40
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Availability:
In Stock.
Arrives
Wednesday, Jun 18
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Size: 40A
Features
- FUNCTIONS: Used to protect power distribution facilities from overload and short-circuit damage, and can also be used for control and isolation.
- FAST TRIP: The electromagnetic trip system can trip immediately when the circuit is short-circuited to protect the safety of the circuit.
- ARC EXTINGUISHING: DC arc extinguishing is more difficult than AC. This DC mini circuit breaker has a magnetic system to assist arc extinguishing.
- APPLICATION: Used in DC power system, ship electric power system, solar photovoltaic system, or other DC system.
- INSTALLATION: Screw clamp wires, 35mm DIN rail mount.
Brand: CHTAIXI
Current Rating: 40 Amps
Product Dimensions: 1.42"D x 2.95"W x 31.5"H
Circuit Breaker Type: Standard
Mounting Type: DIN Rail Mount
Is Discontinued By Manufacturer : No
Product Dimensions : 1.42 x 2.95 x 3.15 inches; 6.35 ounces
Item model number : DZ47Z-63
Date First Available : August 8, 2021
Manufacturer : CHTAIXI
Best Sellers Rank: #7,266 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Miniature Circuit Breakers
#1 in Miniature Circuit Breakers:
Customer Reviews: 4.6 4.6 out of 5 stars 1,194 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 63A
Works great. Easy to install and operate. They fit well into my solar system.
Reviewed in the United States on May 7, 2025 by Russell J Maloney
Size: 20A
Used this on a portable power station build to protect my solar panels. Everything working as it should.
Reviewed in the United States on April 30, 2025 by Krater Krater
Size: 63A
Decent price and easy to install.
Reviewed in the United States on March 3, 2025 by Tim Fandel
Size: 32A
Good breaker and was easy to install. Feel the money was well spent. Works good.
Reviewed in the United States on January 25, 2025 by Frank Odom
Size: 63A
Muy como yo lo pedí
Reviewed in the United States on May 1, 2025 by Miguel Gonzalez
Size: 32A
I installed 3 of these almost a year ago. I have had no issues with PV voltages from 3 solar arrays, all putting out up to 500 Vdc at times. I recently rewired a PV array of 12 panels. Made the mistake of inverting the polarity. When I turned on the breaker, it smoked, bigtime! then all was silent. No fire, no melting of the breaker. I measured the voltage at the input and realized the polarity was reversed. My bad! I disabled the voltage at the panels, rewired correctly, and connected to a new breaker. All worked well. My biggest point with this review is, even though the breaker fried, it kept the reverse voltage of over 400 Vdc from getting to the solar inverter and causing hundreds to thousands of dollars in damage. The breaker not only will trip if the amperage is exceeded, but also protects from reversed Vdc. Very thankful!
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Reviewed in the United States on October 3, 2024 by RussVerk
Size: 63A
i'm using these between a set of solar panels wired in series-parallel and what has quickly become my most favorite compact Victron Solar Charge Controller, especially at its more recent favorable price (this one: https://amzn.to/3JhCLgR). I have found these miniature circuit breakers do the job perfectly: they are easy to install using the provided DIN rail and screws, easy to slide on/off or clip on/off to the rail while working with the cabling, and while a few other reviewers have mentioned cable grip, I have been fortunate, and have found the breaker to grip the cables well. It is important when purchasing breakers like these to consider size matching to ensure that the gauge of cable being used is an appropriate size for not only the electrical requirements of the system, but also for the cable slots in both the charge controller and the circuit breaker. PRO TIP: it is also important to carefully strip the wire ends to a proper length. The goal is adequate exposure to the terminals and terminal clamps, but not more than that. With both these breakers and the Victron charge controller, I was able to use 6AWG cable, stripped back about one-half inch, and the cables seated cleanly and firmly. Overall, not only is it a best-practice to safeguard your solar setup with proper breakers and/or fuses, it also makes it more convenient, safer, and provides some peace-of-mind when you need to work with it. Enjoy!
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Reviewed in the United States on April 13, 2024 by J
Size: 16A
Seems to be a good and reliable breaker so far, but have only been used for testing at this point in intended circuit. That being said, power pass through as well as breaker shut on and off functions well.
Reviewed in the United States on January 9, 2025 by CW