The electrical circuit breaker (CB) is a protective device that is widely used for protestation purposes. There are several types of circuit breakers based on their ratings. The circuit breaker is a crucial component for high-voltage protection. It is also used for the generating station, electrical substation, and distribution substation. But these are the high-voltage circuit breakers. In most cases, the double-pole circuit breaker is used for low-voltage protection purposes. Basically, there are three main types of low voltage circuit breakers:
- Miniature Circuit Breaker (MCB).
- Moulded Case Circuit Breaker (MCCB).
- Residual Current Circuit Breaker (RCCB).
These are manufactured on different ratings, and used for low voltage (120 – 240 volts) applications. We will discuss low voltage double pole circuit breakers that are widely used for home, office, indoor, and outdoor applications. Circuit breakers are used in different types of substations for protection purposes.
A double-pole circuit breaker (CB) means that it has two poles or two hot wires that are connected to a single neutral wire. Single-pole and double-pole circuit breakers both have the same operating principle but are different in power capacity. Single pole circuit breakers are used for the low power rating usually 120 volts with 15 to 20 Amps. Whereas double pole circuit breakers are used for 240 volts with 20 to 60 Amp.
QF220A QF220 Two Pole Ground Fault Circuit Interrupter
An electrical fault is an important factor and it is the major consideration in the entire power system. To protect the device from short circuit current or surge voltage different types of protection systems is adopted. The circuit breaker is used to protect the device from overcurrent overvoltage or surge voltage. The double pole circuit breaker is used more to protect the short circuit current or overvoltage.
QF220A QF220 two-pole ground fault circuit interrupter is more popular, and people are using it due to its greater use privilege. The ground fault occurs whenever power takes an undesired path to the ground. Earth fault current or ground fault current is very dangerous, and it can cause electric fire, electric shock, and short circuit currents to become much higher than the normal current.
This double pole circuit breaker is compatible with 20 Amp and 120/240 volts AC. It is able to disrupt current up to 10,000 Amps without shortening the ground or exposing live parts. You can use it for a variety of applications, such as kitchens, bathrooms, hot tubs, and indoor-outdoor applications. These circuit breakers are widely used to get better protection from ground faults.
Specification
Product name: Ground fault circuit interrupter (GFCI)
Rated current: 20 Amp
Rated voltage: 120/240 volts
Number of poles: Two poles
Circuit breaker type: GFCI
Product dimension: 7 x 2 x 3 inches
Circuit interrupting capacity: Very fast
Convenience
- This double-pole Circuit breaker has a higher current interrupting capacity.
- It has a 10,000 AIC short circuit current interrupting rating.
- It is usable for a large number of applications especially home offices, factories, etc.
- It provides world-standard GFCI protection. It is easy to install and long life.
Inconvenience
- It is designed for 20 Amp but it is not useable instead of 30 Amp.
QF250A Two Pole Ground Fault Circuit Interrupter
GFCI stands for ground fault circuit interrupter. The ground fault circuit interrupter (GFCI) is widely used to protect short circuits. GFCI is a fast-acting circuit breaker and can interrupt the circuit within a very short time of 1/40 seconds. This circuit breaker is designed the shut off the flow of electricity whenever a fault occurs. The double pole circuit breaker is connected with two hot wires and a neutral wire.
QF250A two-pole ground fault circuit interrupter with 10,000 AIC is designed for 50 Amp current carrying capacity and it can take voltage up to 240 volts. This break is compatible with several applications like kitchens, hot tubs, bathrooms, and others. It has a very quick circuit-breaking capacity, and it has also many more features. Due to its greater privilege, the world people are using more. You can use it in your home, office, and factory.
Specification
Product name: Double pole GFCI circuit breaker
Rated voltage: 240 volts
Rated current: 50 Amp
Circuit breaker type: GFCI
Product dimension: 7 x 2 x 3 inches
Circuit interrupter time: 1/40 seconds
Number of poles: Two pole
Product color: Black
Convenience
- It is easy to install and low cost based on Ampere rating.
- This breaker has no popping problem.
- This breaker has a 10,000 AIC short circuit current interrupting rating.
- It has no battery required.
- It has a Ground Fault Circuit Interrupter (GFCI) component that resists the earth fault
Inconvenience
- It is designed for 50 Amp but it is not useable instead of 50 Amp.
Q280 80-Amp Double Pole Type QP Circuit Breaker
Circuit breakers are the protective devices used to protect electrical and electronic devices at home, office, in industry, and indoor-outdoor applications. Double pole circuit breakers are thermal-magnetic breakers and play a key role in protecting the device from overvoltage and overcurrent, and it is also able to mitigate electrical fire risk. The circuit breaker can be used for switching and protecting the wire from melting due to high currents.
If the temperature becomes high then excess current may flow through the wire and it can cause an electric fire. In this case, the breaker can reduce this effect. Q280 80-Amp Double Pole Type QP Circuit Breaker is one of the most popular circuit breakers. This QP-type double pole circuit breaker is designed for different amperes like 20 Amp to 100 Amp but it is compatible with 80 Amp 240 volts.
This breaker has a 10,000 AIC interrupting rating. It is noted that circuit breakers may go bad due to some technical factor and longer use than their rated date. to test the healthy circuit breaker you can use the best circuit breaker finder that will lead you to safe your device by replacing the bad breaker.
Specification
Product name: double pole circuit breaker
Rated voltage: 240 volts
Rated current: 80 Amp
Mounting type: Plug-in Mount
Product color: Black
Circuit tripping capacity: Very fast (1/40 seconds)
Product dimension: 3 x 2 x 3 inches
Convenience
- This double pole breaker has a higher current interrupting capacity.
- It has a 10,000 AIC short circuit current interrupting rating.
- It is usable for a large number of applications, especially home offices, factories, and indoor-outdoor applications.
- It is a plug-in mount that can offer you an easy connection.
- It provides world-standard GFCI protection.
- It has a longer life and offers higher safety.
Inconvenience
- Though it is designed for a higher current rating of 80 Amp it cannot use for more than 240V AC.
UBIP2100-New Pushmatic Two Pole 100 Amp Circuit Breaker
Basically, we used circuit breakers for the protection purposes of our electronic devices from surge voltage. The circuit breaker is a more reliable device to protect some other devices from overcurrent or overvoltage. In some cases, two types of circuit breakers are used a single pole and a double pole. Single pole circuit breakers are used for low operating voltages like 120 volts and are connected to a hot wire and neutral wire.
But a double pole circuit breaker is used for the 240 volts and high ampere. Double pole circuit breakers need two hot wires and these are connected with a neutral wire. UBIP2100-Pushmatic Two Pole 100 Amp Circuit Breaker has more features like it has standard circuit tripping or an interrupter system. It has also disrupted currents up to 10,000 Amps without shortening the ground or exposing live parts. This breaker offers long-lasting and has a very fast tripping system. It is noted that before purchasing this product you check it.
Specification
Product name: double pole Pushmatic circuit breaker
Rated current: 100 Amp
Operating voltage: 120/240 volts
Circuit breaker type: Standard
Number of poles: Two-pole
Product dimension: 4 x 3.3 x 1.4 inches
Convenience
- This double pole breaker has a higher current interrupting capacity.
- It has a 10,000 AIC short circuit current interrupting rating.
- It is usable for a large number of applications especially home offices, factories, etc.
- It is listed in UL Standard 489 for Intertek ETL US and Canada-Molded Case.
- It provides world-standard GFCI protection.
- It has a longer life and offers higher safety.
- It has a 10-year warranty.
Inconvenience
- Though it is designed for a higher current rating of 100 Amp it cannot use for more than 240V AC.
Final Word of Low Voltage Double Pole Circuit Breaker
We know well that circuit breakers and electrical fuses are used in all places where overcurrent and overload protection are required. The fuse and circuit breaker works on almost the same platform but the circuit breaker (CB) is used for high voltage and low voltage purposes while the electrical fuse is used for low voltage purposes. Sometimes a question appears why circuit breaker is used more instead of a fuse?
There is the greatest advantage of CB, there is no need for replacement after the operation because CB automatically returns to the present situation after every single operation. For this reason, CB has used more instead of an electrical fuse. Basically, we discussed the low voltage double pole circuit breaker.
Indeed CB is a popular protective device and double pole CB is more popular due to its smart circuit breaking and making capacity. Double pole CB is used for comparatively high voltage protection purposes and it is more flexible. Double pole CB offers 20A to 60A in 240 volts and protects heavy machinery. That’s why double pole circuit breakers are necessary for indoor, and outdoor, offices, factories, and other places.