Product Spotlight: Square D EDB34030 Circuit Breaker

The Square D EDB34030 is a three pole, 30 Ampere circuit breaker. At 277V, this miniature breaker is reliable, sustainable, efficient and safe.

Part Number: EDB34030
Item Weight: 3.6lbs
Product Dimensions: 9.7 x 6.1 x 4.5 inches
Voltage: 480V
Amperage: 30A
Trip Rating; 875A
Mounting Mode: Bolt-on
Interruption Rating: 18kA

Square D EDB breakers by Schneider Electric are available in a range of amperages varying from 20A to 60A. This particular model, the EBD34030, is 30A.
This breaker is set apart from other breakers because of its compact size at 9.7 x 6.1 x 4.5 inches, while the typical breaker is around 8 x 8 x 12 inches. As a bolt on mount, it is preferred in commercial and industrial applications where vibrations might be considered an issue. When installing, be sure to use the recommended #12-#6 AWG AI or #14-#6 AWG Cu Lug wire. This breaker is ideal for NF series panel-boards to offer superior overload and short circuit stability by utilizing thermal magnetic protection. It is also HACR rated, UL listed and CSA certified.

MRO Electric and Supply stocks Square D circuit breakers, including the EDB34030. For more information or to request a quote, please contact us at 800-691-8511 or at sales@mroelectric.com.

What are circuit breakers?

A circuit breaker is a preventative safety device that detects and stops a circuit if the current is insufficient or in excess. These devices help insure the stability of the electric current in our buildings. Unlike fuses, breakers are reusable and can be consistently relied upon to break a circuit to protect us from potential electrical fires.

How do they work?

A breaker is comprised of a few basic components. A switch is connected to an electromagnet that allows electricity to flow from the bottom to the top terminals.

Source:
http://spmphysics.onlinetuition.com.my/2008/06/uses-of-electromagnet-circuit-breaker.html

With current running through the electromagnet, it becomes magnetized. If the current is suddenly increased, the magnet becomes strong enough to pull down a metal lever attached to the switch linkage. By doing so, the contacts are broken and the electricity is powered off.

What’s the difference between certain breakers?

Residential Circuit breakers- Used in common household wiring to protect electrical appliances like refrigerators, washing machines and fans. Electrical panels can also be designed to have one breaker controlling one specific or multiple outlets in a room that shut off when overloaded.

Industrial Circuit breakers- Used with much larger electrical current applications for warehouses, factories, and other large industrial locations. They can be used to insure safety of the plant equipment, lighting, business systems, air conditioning and wiring.

Voltage– Describes the ‘pressure’ of the electricity. The most common voltages of breakers are . Most household voltage is 120V, with larger appliances around 240V.
Amperage– Measures strength of the current in amperes. Common amperages include 15A, 20A, 25A, up to 6000A.
Pole number– Describes the number of completely separate circuits that can be protected by a circuit breaker at the same time. These include single-pole, double-pole, triple-pole and tandem pole breakers.
Installation location/External Design– Breakers can be designed to be indoor or outdoor based on the application. Different enclosures can be made to withstand different weather conditions.
Interrupting Mechanism– Other breaker designs include air circuit, oil circuit, vacuum circuit, MCB, MCCB, GFI, GFCI and AFCI breakers. While these all serve the same purpose of breaking electrical current in the event of unstable electric power consumption, they have different means of interrupting the current.


Visit MRO Electric and Supply’s website to see all of our available Circuit Breakers. If we don’t have what you need listed on the site, contact us at sales@mroelectric.com or (800)691-8511 and we will be happy to help.

Keeping Your Breaker Running

In any industry of the modern era, the use of electronics is absolutely crucial and unavoidable. Whether you are operating a CNC shop, process plant, or assembly line, electronics devices and automation technologies are at work there.

Automation is understandably the backbone of our industries. However, it comes with an additional responsibility of maintenance and inspection. This is something industrialists sometimes neglect and core electronic equipment goes unchecked for long periods of time, which can lead to serious problems and financial loss.

In this blog, we focus on one basic electric device: the circuit breaker, and why do you need to keep it in tip-top condition.

Circuit breakers are installed at nearly every point in your plant’s electric layout and offer protection against over-current incidents which can damage sensitive devices like motors, drivers etc. They work by cutting off power supply to the circuit they are connected against if a high amount of current is detected.

siemens breakers

Proper maintenance of circuit breakers is an essentially that everyone must understand. If your breaker is faulty due to poor maintenance, you can end up with a burden that is far more than that of performing maintenance. The replacement of damaged devices in addition to the possible shutdown of an industrial process is not something what we want.

In our opinion, the best way to optimize breaker maintenance is to have a complete system in place. Discussed below are a few suggestions we have for people who wish to keep their breakers in proper running.

  1. Know Your Breaker

Circuit breakers come in different types and ratings. Usually in industries, they are categorized by the voltage they are supposed to handle, short-circuit current capacity (AIC value), and the medium they utilize.

You must know the sort of circuit breaker you are dealing with since each type has its own guidelines and precautions. This makes it much easier to narrow down your maintenance procedures and scheduling.

  • Never Forget the Instruction Manual

Once you have the basic know-how about the kinds of equipment you are dealing with, you should get your hands on their instruction manuals. It is always good to have a product manual at hand when testing out your breaker since it carries detailed guidelines about what procedure you should follow in order to ensure comprehensive maintenance.

  • Develop a Schedule

A maintenance schedule is a must if you want your breakers to be ready for a current overload. Usually the manufacturer advises the time period after which a breaker should be examined, a general thumb rule is that breakers should be tested every 6 months to avoid any breakdowns.

  • Avoid Negligence

This is where most almost everybody falls a bit short. If a breaker is tested and a fault is found, it should not be neglected and be rectified immediately. One should not put off the task of replacing damaged parts. You never know when your circuit might short out and be the cause of harm for your equipment.

In a recent blog post, we discussed the reasons why you should keep your machinery up to date. There are many important benefits to make sure your machinery is in its best condition, but none other than saving time and money down the road. It’s impossible to consistently run any machine and not encounter an issue sooner or later. For any inquiries on Siemens Breaker units or anything else, call us toll-free at (800)691-8511 or contact by email at sales@mroelectric.com.