Question about NRS Siemens Fxd63s250a Circuit Breaker 250a 600v 3p

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Siemans fxd63b225 breaker trips,56amps A phase, 49amps B phase, 48amps C phase, adjustable trip at 6, all lugs tight. breaker is main for 277v lighting panel.???

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How long does the breaker hold after resetting? You probably have an 'intermittent ground fault' . If the breaker just trips randomly. One way to locate it would be a megger test on all three phases going out to the loads. Any phase that shows a possible ground could help narrow it down. Sometimes, if possible, you can turn certain breakers off and see if your problem goes away.A meter in record mode could be the best solution. Fluke meters have this option and you could monitor the phase voltage and during a 'ground fault' the voltage will drop some and you'll lock in the dip on the meter.

Posted on Jul 16, 2009

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Have fed pacific 100 amp main [rh13100 na ni ] that gets hot when ac,washer&dryer are all on,just started to trip main ?


Rich, This may sound obvious, but either the main breaker is acting normally because the load is near 100 amps, or it's defective. If it seems that the loading conditions have not changed from prior years, then you have probably been close to the 100 amp level before and a small amount of corrosion has occurred over time (accelerated by the heavy loading). The cleanliness and tightness of connections is critical to carrying loads at rated capacity. If you are close to the rated load, then replacing the main will buy you some time (but probably not as much as the original because the bus bar connection to the main is probably slightly corroded too) but it won't solve the problem - you will need to upgrade to a higher amp service. On the other hand, if you can calculate or measure the total load and you aren't near 100 Amps, then you just need to replace the main. One other thought. If you have a significant part of the load that is not 220V, then it you might have a higher load on one phase than the other, and could possibly be remedied by switching phases on some of the branch circuits. You only have to exceed 50 amps on one phase to trip a 100 amp main. Good luck, Al K

Apr 12, 2011 | Your One Source 100 Amp Main Breaker

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I have two Siemens arc fault breakers that after a year have now started to trip whenever I plug something in. I can plug in a light, a TV, a modem, an iron and they trip immediately My bedrooms have...


Do you have anything plugged in? If they keep tripping with nothing plugged in I would call a electrician to troubleshoot or replace the breakers. They may still be under warranty from Siemans.

Feb 14, 2011 | Gen Tran Gen-Tran Siemens arc fault...

1 Answer

As soon as we close down the lid the circuit breaker trips off ! our model is the 505048 passthrough dishwasher ck 0777


There is a short circuit in the electric system in the dishwasher. As soon as you shut the hood, the circuit is completed and causes the breaker to trip.

You will need a technician to find the leaky part. Most likely the water is leaking into the motor / pump area causing a short circuit.

Best to disconnect from the mains and check for leaky gaskets. I believe this uses a 3 phase 400V which can be converted to single phase. So also make sure there is no unbalance in the mains power phases if you are using 3 phase supply.

Jul 15, 2010 | Electrolux 504199 Dishwasher

2 Answers

After installing my titan N100 the breaker keeps tripping went from 50 amp breaker to 60 and still keeps tripping how do Isolve this problem?


You had an instant heater there before? Or a different type? Your breaker numbers don't mean anything to me, I need amps and volts, what is the amp? 30? and the volt is 220? Or are you in Europe?. And you had the four wires in there before? And you have all 4 wires on the heater line? And the heater is grounded? It should work. Unless it is not getting enough juice, but you already upped the amp. Let me know what you got.

Jul 03, 2010 | TitanNet TITANTANKLESS. COM PRESENTS THE...

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Can tree limbs touching/rubbing against the wires coming from the utility pole cause the 100 Amp Main circuit breaker to trip????


yes,if it has worn the insulation through on one or more of the hot phase conductors to the neutral phase wire,but also check the neutral busbar in the breaker panel for a high resistance connection as this will also trip the main breaker

Jun 06, 2010 | Gb Electrical 100 Amp GE Load Center

1 Answer

Whenever i switch it on at the mains breaker trips


The electric is hooked up wrong. Sounds like ypou have a leg of power hooked up to ground. Check to see if you have single, or three pase at the outlet, and the oven is the same. If the breaker is a 3 wide the power is 3 phase. If you hook up an oen to 3phase that is only single phase, you are connecting one leg of power to ground. The breaker will trip every time you use it.Look on the tag on the oven, it will say 1ph, or 3ph. If outlet has 3 slots, and the oven is 1ph it is hooked up to incorrect voltage. Contact me for clarification if needed

Mar 30, 2010 | Falcon Continental 1092 Dual Fuel...

1 Answer

Trips breaker


If it trips the breaker you MUST have an Earth fault and or a short circuit to Neutral/Earth. You must get a Registered Electrician to look at it.

Feb 03, 2010 | Eemax SP80 8.0kW 277V

2 Answers

Siemens Main Breaker 125 Amp gets warm and trips


sounds like a loose connection ,or possibly a weak main breaker.

Jul 14, 2009 | Siemens /ITE 100Amp 2-pole molded circuit...

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200 amp trips


So one leg of your 220 was hot to the touch. If this wire is coming from your meter and going into the top of the main breaker. Be careful, it is hot and there is nothing you can do to kill the power from it. I would suggest getting a qualified electrician with the proper tools to see if the lug is loose on the breaker. If the wire is not tight in the lug that will produce heat.

Jun 23, 2009 | Electrical Supplies

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