Choosing the right breaker is very important

Any electrical or electronic product that is designed with inadequate circuit protection or without any circuit protection at all is an accident waiting to happen. Protecting your valuable equipment means guarding the entire electrical system--including control switches, wires, and the power source--from short-circuit and overcurrent conditions. Specifying the right circuit protection device for an application is not difficult, but it does require some thought. If electrical and electronic equipment is designed with over-specified circuit protection devices, the equipment will be vulnerable to the damaging effects of power surges and the catastrophic results of a fire, while using under-specified circuit protection devices will result in nuisance tripping. Any electrical or electronic product that is designed with inadequate circuit protection or without any circuit protection at all is an accident waiting to happen. Protecting your valuable equipment means guarding the entire electrical system--including control switches, wires, and the power source--from short-circuit and overcurrent conditions.

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SIEMENS SENTRON HED43 CIRCUIT BREAKERS

NEMA vs IEC. Full size vs compact size. When it comes to space Siemens has accomplished a terrific feat by making the entire line of HED43B100 breakers compact size.Back in the old days believe it or not televisions were like a giant light bulb and were referred to as the “tube”, and they were giant and heavy and occupied a large part of any room. This is the same analogy with I-T-E and present day Siemens circuit breakers. Some 100 Amp breaker in the past were over 20 inches long and weighed in excess of 35 lbs. Today the entire line ED43B015 thru ED43B125 and the HED43B015 thru HED43B125 are 3 inches wide by 5 inches tall and weigh about 3 ½ lbs.
What about adding accessories?
In today’s breaker like the ED42, ED43, ED63, HED43, HHED63 breakers all shunt trips requirements are met by just slapping to the side the shunt trip modular unit to the side of the breaker. Even a caveman could do it. Modern technology and the direction of miniaturizing equipment has provided more product with greater capacity in less environmental room.
Once a customer uses Siemens Sentron thermal magnetic HED43 breakers, they usually like the systems and see them as intuitive and practical. Here is a list of the high interrupting42 Kiloampere At 480, 3 Pole units at 480 Volts:
HED43B015     HED43B020      HED43B030
HED43B040     HED43B050      HED43B060
HED43B070      HED43B080     HED43B090
HED43B100      HED43B110     HED43B125

Please look at all your options, since there is a breaker for your specific application. Many accessories like enclosures, shunt trips, auxiliaries, handle operators, lugs and many more.

Buy Circuit breakers at Westport Apparatus

At Westport Apparatus we want our customers to save money on specific breakers. As a part of our commitment
we created a special Sales page .  Take advantage on this sale page as we update it every week with  new products , priced wholesale . We discount our products way less than other websites and pass along the savings to our customers. These selected products will be on sale as long we have inventory.
Some of the Circuit Breakers we have on Sale are:
HFD3225 
HFD3175
HFD3150
DS840
Grab it while supplies last . If you are looking for a specific breaker please contact us .

http://westportapparatus.com

HFD3225 time current curves

Where do you source Time Current Curves or Trip Curves for Cutler-Hammer circuit breakers?When it comes to field testing circuit breakers you need to have the specific Time Current Trip Curves in order to perform long-time primary injection testing on molded case circuit breakers. Our company Switch Gear Testing, has been buying all its thermal magnetic molded case circuit breakers from Westport Apparatus Electrical Supply in Orange, California.Why, I’ll tell you why, because they are always professional and they support us with all factory documentation as required for a certified test.Two months ago a water treatment plant was experiencing some nuisance tripping with a Cutler-Hammer HFD3225 Series C breaker.Once the customer notified us of the specific breaker in question all I had to do was call Frank at Westport Apparatus and had him email  us the test time curves No.SC-4438-88A #TC01200002E. With the right information we were able to specifically determine that the breaker was tripping too soon and outside the normal operating trip range.Below I’ve included a copy of this Time Current Curves graph. The room or ambient temperature is critical, because this can greatly affect your result.Also providing factory time curve docs really demonstrates to customers the level of professionalism they want.

Another huge factor for using Westport Apparatus is eliminating stock of  millions of dollars of expensive circuit breakers which  the normal full-line distributors just can't afford to inventory. In fact Frank the owner tells me that his primary business is to supply the local distributors across the country. Now that I didn’t know.I guess that’s why I get the lowest price, because I’m buying direct and not through a middle-man. Not even the authorized Cutler-Hammer distributors can afford to stock all the Series C line of Breakers. Westport Apparatus stock all amps from 15 ampere up to the RD 2500 ampere breakers. My local supplier is good for pipe, wire lighting and all that stuff which is not carried by Westport Apparatus. They mainly stock the circuit breakers, panel boards to mount them in and the hardware connector kits. Understanding how Cutler-Hammer evolved the KPRL panel boards is another science. Getting the right parts can only be done by experts and that’s Westport Apparatus.
If you’re busy like me, go to the best and save time and get the most competitive prices. I assure you.
Mike Acebo, SST
Orange County, CA