Electrical Circuit Breakers

What is Low Voltage Double Pole Circuit Breaker?

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 the 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. Basically, circuit breakers are used in the different types of substations for protection purposes.

A double pole circuit breaker (CB) means that it has two poles or two hot wires these are connected to a single neutral wire. Basically, 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 system 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. Basically, 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 current become very higher than the normal current. 

double-pole-circuit-breaker

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 varieties 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 provide protection against short circuits. GFCI is a fast-acting circuit breaker and can interrupt the circuit within a very short time 1/40 of 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.

double-pole-circuit-breaker

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 pole: 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 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 device used to protect electrical and electronic devices at home, office, industry, and indoor-outdoor applications. Basically, double pole circuit breakers are thermal-magnetic breakers and play a key role to protect 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.

double-pole-circuit-breaker

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 ampere like 20 Amp to 100 Amp but it is compatible with 80 Amp 240 volts. This breaker has a 10,000 AIC interrupting rating.

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 but 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 cases, two types of circuit breakers are used a single pole and a double pole. Basically, single pole circuit breakers are used for low operating voltage like 120 volts and connected to a hot wire and neutral wire.

double-pole-circuit-breaker

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 current up to 10,000 Amps without shortening the ground or exposing live parts. It 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 10 years 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 is required. Basically, the fuse and circuit breaker work 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 above 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, outdoor, office, factories, and other places.