Questions tagged [automatic-circuit-breaker]
The automatic-circuit-breaker tag has no usage guidance.
21 questions
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How to wire an RCCB to secure a power supply?
Fellow tinkerers,
reading the manual of my brand new 5V power supply (MeanWell RS-150-5), I've come across the requirement, that I need to secure the PSU with a residual-current circuit breaker (RCCB) ...
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How Siemens 7SJ80 over current protection relay can trip a circuit breaker remotelly installed
I wanted to know about the Siemens 7SJ80 protection relay which is installed in a transformer station on the middle-voltage line.
How can I trip a circuit breaker installed between a solar generation ...
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Is it normal to keep turning on RCCB multiple times until it stays up? [closed]
I have a breaker that controls current powering a set of seven desktop computers and monitors. Sometimes it can take me up to twenty attempts to bring the breaker up. Eventually it stays up and the ...
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Why do 3-phase selective circuit breakers appear as separate (not joined) ones?
I'm looking at 3-phase selective circuit breakers like this:
Unlike a typical 3-phase circuit breaker, this selective breaker appears to be essentially 3 separate breakers all put together. Strangely ...
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Are there breakers which can be triggered by an external signal and have to be reset by hand?
Essentially, I would like to connect a breaker to a smoke detector and have it trigger when it activates.
Are there any breakers that can be triggered by a separate external signal and which have to ...
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Why are two 555 ICs used in this automatic plant watering system's circuit diagram?
I have been working on this project but couldn't figure out why two 555 ICs are used and how they contributed to the operation.
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Can I replace a 32 A switch with a 32 A MCB?
A switch for a water heater in my apartment is broken (image attached).
It is an "Anchor Roma 32 Amp 1-Way Switch with indicator".
Can I replace it with this or this switch?
Would the installation ...
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How turn off lights automatically?
I am trying to make system where I want lights to turn off automatically. It should work like that if someone kept lights on by mistake then it should turn off automatically without any human ...
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How does the arc extinguisher work in a miniature circuit breaker?
In a miniature circuit breaker, as shown below, the distance between open contacts is much less than the distance between metal bars in the arc extinguisher part (the gap gets progressively longer ...
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Need help to identify this timer
This device is installed in our electrical panel which act as a timer to control the on/off operation for our LED billboard outside my office. I searched around the device for the brand and model it ...
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Need a switch/circuit breaker that stops power supply to equipment when power comes back after outage [duplicate]
I need a switch that stops power supply(220VAC) to led tv when power comes back after outage. So i need a circuit breaker that breaks the circuit when power supply is off and needs manual switch on ...
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Should a frequency-controlled motor use a circuit breaker with a B or C trip characteristic?
In our company, a discussion is raging on whether a motor with a frequency controller should be protected with an automatic circuit breaker with B or C characteristic.
The B-camp's argument is that, ...
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What factors play into choosing type of MCB (Circuit Breaker) which is B16 vs C16 vs D16?
Found these discussions and Q&As online around this and am trying to determine how/ when one would decide to choose which way to go?
http://www.theiet.org/forums/forum/messageview.cfm?catid=205&...
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Car electronics
I have a vehicle with a 150 amp alternator and inverter 450w 12vdc input 115 back output
I want to run a tv for at least 4 hours TV is ac 110 60hz 48w typical power 28w I calculated my amps 0.4363636 ?...
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how to trip a MCB without short circuit or over load?
I want trip a MCB whenever I want to trip using some ckt.I have found that there is two mechanism by which mcb trip:
1)Bi Metallica expansion
2)Solenoid effect.
So i think of controlling the solenoid ...
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Using motor circuit breaker buttons to start/stop motor
I want to add some protection to an ac 3/4 hp motor. I did some research and found that I could use one of these motor circuit breakers:
My question is, if I use one of these, can I use the on/off ...
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Circuit breaker not tripping
I am powering a bunch of LEDs with a 60A/5V power supply. For extra protection, I wired a 50A circuit breaker between the supply and the LED array:
http://www.digikey.com/product-search/en?mpart=W23-...
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First order circuit with t=0+ , t=0-?
Yesterday I tried to solve a question in a second order circuit , but I couldn't ! because I have problem understanding the concept of 0+ , 0- !
So let me try it in a first order circuit , it ...
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Finding some variables in a second-order circuit?
Can any one please help me solving these questions .. I always get a wrong answers :/
The first order circuit is much easier than this one !!
This is my answer :
for the first time i thought it ...
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how phase frequency matches in reverse power flow situation
I have a question regarding smart energy systems. Consider a reverse power flow (where the power flows from household to grid) situation, A household has a solar installation and the energy obtained ...
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How to select a home automatic circuit breaker?
A room contains electrical devices which has a max demand of 10A (may be more than that in the future).
The mains cable from the electric panel (distribution board) is 4 mm2 which can handle current ...
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