- IEC 60947-2, EN60947-2, GB 14048.2
- 1 P=250 V DC, 2P=500 V DC 3P=750 V DC, 4P=1000 V DC
- Different curve
- Description
- Order Code
- Download
The JB circuit breaker is a precision engineered safety electrical device designed to be installed in each line of photovoltaic system and in photovoltaic inverters and detect irregularities in the electrical flow.
Once it detects that there’s a short circuit, power surge or overloading, or bidirectional current, it will immediately cut the electricity off, therefore, it helps protect the photovoltaic inverter cables and the components that are connected to it.
It consists of four poles, two positive poles, and two negative poles that are not polarity sensitive so they can be interchanged without risk.
Furthermore, when it is in the off position, you can lock it using a padlock for additional safety measures. Depending on your application, it can also be combined with the following for installation safety:
- residual current device or RCD at the end of an AC line
- fault passage indicators or FPI
- earth leakage circuit breaker or ELCB
The JB circuit breaker is compliant with international electrical and safety standards so you can be sure of its top-notch quality and reliable performance.
DC circuit breaker E-catalogue, please download it below:
Related Products
Langir 2 Pole DC Circuit Breaker Introduction
Langir is the top and dependable supplier of 2 pole DC circuit breakers in China.
Their 2 pole DC circuit breakers are built with precision ensuring only the best switch performance and reliability.
A 2 pole DC circuit breaker is a defensive electrical switch that acts as a safeguard of your electrical circuit against the damage done by overloading or short circuit.
2P DC circuit breaker
2 Pole DC Circuit Breaker Working Principle
The 2 pole DC circuit breaker acts as a switch that automatically cuts the flow of electrical supply in the event of a spike in the current.
The electrical load is supplied to the positive and negative poles on one side while the power supply is connected on the other two poles.
This means that if there is a current problem on either of the poles, the 2 Pole DC Circuit Breaker will trip and the current flow stops.
1P DC Circuit Breaker vs 2 Pole DC Circuit Breaker
When you compare the appearance of the 1P DC circuit breaker and the 2 pole DC circuit breaker, the 1P DC circuit breaker looks like a narrow shaped switch with a lever while the 2 pole DC circuit breaker is double the size, two narrow switches molded together where a lever is built in.
The 1P DC circuit breaker only has two poles, the positive and negative poles.
While the 2 pole DC circuit breaker has four poles, so there are two poles for each positive and negative.
Moreover, the 2 pole DC circuit breaker is generally installed for two separate circuits like 120 volts or 240 volts.
While the 1P DC circuit breaker typically serves lower voltages such as 120 volts and below.
Side by side comparison of 1P & 2P DC circuit breakers
The Langir 2 Pole DC Circuit Breaker Advantage
A Langir’s 2 pole DC circuit breaker has four poles, so there are two poles for each positive and negative.
Best of all, it is not polarity sensitive so the positive and negative wires can be interchangeable without any risk.
It is designed to give protection to cables found in each string of photovoltaic inverter and modules as preventive measures of overloads or short circuits.
In addition, all Langir’s circuit breakers can be locked while in the off position as an added measure for safety.
So when you need to buy 2 pole DC circuit breakers built with precision engineering and complies with high quality standards, you can always depend on Langir.
Application
You can use DC circuit breakers on the following applications:
- Centralized air condition units
- Electric dryers
- Electrical stoves
- Electrical water heaters
You can also use them on lower voltage appliances or circuits and other similar applications.
2P DC circuit breaker applications
Ordering the Langir 2 Pole DC Circuit Breaker
Langir is a manufacturer that has been in the industry for many years and they have been recognized by many independent certification organizations. With Langir, you can inquire about the 2 pole DC circuit breakers whether you want to buy several units or more.
Simply send an inquiry form or call their customer service hotline and their friendly sales associates will be happy to assist you in any of your inquiries. You can also consult about your circuit breakers needs to our experts to ensure that you will receive what you need.
Certified by many international safety and quality governing bodies, the 2 pole DC circuit breakers from Langir are tough and built to last. With the easy snap in mounting, you can install the circuit breakers within minutes right after you’ve received them.
You can rely on Langir to deliver your high quality 2 pole DC circuit breakers fast with guaranteed satisfaction.
Contact Langir to order now.
Langir production facility