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A single pole circuit breaker can protect one hot wire to a given load where as a two pole circuit breaker can protect two hot wires to a given load. In the North American system this would equate to 120 volts on a single pole circuit breaker and 240 volts on a two pole circuit breaker.

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13y ago
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8y ago

Single Pole MCB is for 120V and Double pole is for 240 V. Single pole controls 1 live wire and Double pole can control 2 live wires.

For an example, a refrigerator is connected to your power supply of 230 V (Rated) by means of Double pole MCB. If any one of the live wire gets short circuited, the other one which is connected to MCB also gets tripped with that. In other case, if you connect two single pole circuits, and if one live wire gets short circuited, it will be a dangerous.

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10y ago

In electrical sysem,Pole refers to a power cable connection on the MCB.Thus single pole means one phase and no neutral.

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Q: What is the difference between single pole mcb and double pole mcb?
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What is the difference between iron clad double pole switch and double pole single throw switch?

Answer for USA, Canada and countries running a 60 Hz supply service.The difference between a double pole switch and a single pole switch is the use of the switch in the installation or equipment. A double pole switch is used when the voltage from two circuits has to be broken. An example of this is a 240 volt supply. A single pole switch is used where there is only a single supply voltage that has to be broken.


What is the difference between single pole and double pole thermostats?

A line thermostat on a 240 volt heater must open both of the supply lines that feed the heater. This is where the double pole thermostat is used. On 120 volt heaters only one hot line needs to be opened to shut the supply off from the source therefore a single pole thermostat is used.


Double pole or single pole hot water heater thermostat?

Single pole.


What is difference between single pole and double pole switch?

A single pole switch interrupts only one wire, which must be the live wire. A double pole switch interrupts both the live and the neutral, so it contains two separate switches operated by the same lever. Current practice is to use single-pole switches, to avoid a fault condition which could leave equipment live while switched off.


What does dp and sp mean on a socket?

Double pole and single pole.


Should you buy double pole breaker or single pole?

Use of a double pole breaker or a single pole breaker depends entirely on the application. If you don't know about the application, contact a qualified electrician in your area.


Which is best double pole or single pole power socket?

there is no answer a single pole socket is a 120v and a double pole is 240v if you are talking about contactors it is completely up to the appliance but a double pole double throw is just as safe as a single pole single throw contactor, Example a single pole single throw will only disconnect the "hot" wire, not the neutral or ground wire and thus no voltage will pass however with a 240 v circuit a double pole single throw only disconnects one "hot" wire and will still have voltage through the circuit (120 volts not 240 though)and is not as safe as a double pole double throw that will disconnect both "hot" lines so no voltage is in circuit If you need electrical work done and do not completely know how to wire it up to code and be safe in the process hire a professional! >>>ITS WORTH YOUR LIFE<<<


Can double pole circuit breakers be changed into single to create more room in the pannel box?

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What is the difference between single pole switch and a three way?

A single pole switch controls a light or outlet at one location. A 3 way switch controls a light or outlet from 2 locations.


What does SPDT stand for?

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What is the difference between double pole and triple pole?

A single-pole switch is an on/off switch that switches a single wire such as the circuit to your overhead light. A double pole switch is also an on/off switch that switches two wires. You would use this to switch as 240 volt circuit (which requires two hot wires) or if you had two circuit you wanted to switch at the same time. I've used them when I had two large light circuits that required two breakers that I wanted to switch with one switch.


What difference between using 4poles circuit breaker and using 3 single pole breakers?

3 pole would be for 3 phase, 4 pole would be 3 phase & neutral