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DC Miniature Circuit Breaker, 2 Pole 1000V 40 Amp | DIN Rail Mount Isolator for Solar PV System, Thermal Magnetic Trip DC Disconnect Switch C40

  • Based on 256 reviews
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Availability: In Stock.
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Arrives Sunday, Jul 26
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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.

Description

Warm Tips: AC has a zero-crossing point, but DC does not, so DC arc is more difficult to extinguish than AC arc, which is why AC circuit breakers can not be used for DC power, and DC circuit breakers can be used for AC power. This DC mini circuit breaker is equipped with a magnetic field system under the breaking contacts, which can pull the arc to the arc extinguishing chamber to assist arc extinguishing. This DC MCB has no polarity requirement in use, and the positive and negative poles can be inverted. However, the installation, use, and maintenance of DC circuits are based on polarity requirements. So, in order to provide reliable indication and reference for the distribution, we highly recommend that you connect the wires according to the marked polarity. The clamping design of the terminal block is designed to connect firmly, and the tightening torque is 2.5 N.m. ( Soft silicone wire needs to crimp fixed the wire end with copper crimp before wiring. ) Make sure that the wires are tightly connected when connecting to prevent loosening and heating. The surface of the terminal is tin-plated, and the plating layer can improve conductivity, corrosion resistance, and durability. Contacts are very important to circuit breakers, especially for DC distribution with high arc extinguishing requirements. Good contacts can reduce the heat generated by arcing during disconnection and reduce the wear of the contacts. This DC circuit breaker uses silver alloy contacts, which improves electrical durability, and protects your electricity safety for a long time. Install the 35mm DIN rail horizontally in a stable environment.

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


Brand Name: CHTAIXI


Model: DZ47Z-63


Part Number: 47Z63-2P1000


Manufacturer: CHTAIXI


Item Weight: 6.35 Ounces


Current Rating: 40 Amps


Circuit Breaker Type: Standard


Mounting Type: DIN Rail Mount


Number of Poles: 2


Voltage: 1000 Volts


Item Dimensions D x W x H: 1.42"D x 2.95"W x 31.5"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 26

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.

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Top Amazon Reviews


  • PV breakers.
Size: 40A
I use these breakers as protection and disconnect between the solar modules and charge controllers. With the built in arc squelching magnet, they are a very reliable switching device, even under a load I size the breaker 1.5 Tim's the max current of the circuit. I use these on every system I install. ... show more
Reviewed in the United States on September 1, 2024 by Solar guy

  • Solor breaker
Size: 40A
Great Solor breaker , not mark line or load
Reviewed in the United States on April 4, 2026 by Mike

  • Hasta ahora bien llevo poco tiempo con ellos Hasta ahora bien llevo poco tiempo con ellos
Size: 40A
Reviewed in the United States on May 30, 2026 Reviewed in the United States on May 30, 2026 by telefonico

  • Great for RV Solar
Size: 40A
Installed this between my solar panels and the control panel. Works as described.
Reviewed in the United States on May 25, 2025 by Richard

  • It works great!
Size: 40A
It's a 40 amp and affordable and needed for the connectivity of what I need it for. This is great for the safety of what I am doing and it looks good and works great.
Reviewed in the United States on August 19, 2024 by Happy Customer

  • Use it for my motorhome solar panels. Use it for my motorhome solar panels.
Size: 40A
I installed it by myself.
Reviewed in the United States on May 10, 2025 Reviewed in the United States on May 10, 2025 by Kyrylo Lytvinov

  • Great breaker for solar panel
Size: 40A
I'm using this for solar panel array, and it seems to work well. The only downside is the cheap aluminum din rail. So i replaced it with a steel version, and couldnt be happier knowing its properly secured.
Reviewed in the United States on July 23, 2024 by monkey1509

  • Great fit easy to connect
Size: 40A
Great fir easy to connect and have a safety way to protect yourself and your equipment while working on it
Reviewed in the United States on December 15, 2024 by Ernesto Castellanos

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