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What is an EDB breaker?

What is an EDB breaker?

Square D® EDB-EPD, EGB-EPD and EJB-EPD (Equipment Protection Device) Circuit Breakers are 1-pole thermal-magnetic circuit breakers with integral equipment ground fault protection. The ground fault protection level is fixed at 30 milliamperes per UL1053 and is designed to protect equipment from damage.

What is the difference between trip curve C and D?

C curve MCBs should be applied where the loads have a small amount of in-rush current on start-up. The ideal application is a circuit with a small transformer load. D curve breakers: Trip between 10-15 times rated current. D curve MCBs should be applied where loads have a high level of in-rush current on start-up.

What are TCC curves?

A time current curve (TCC) plots the interrupting time of an overcurrent device based on a given current level. These curves are provided by the manufacturers of electrical overcurrent interrupting devices such as fuses and circuit breakers.

What is the trip setting on a breaker?

Instantaneous Region: The instantaneous trip (I.T.) setting indicates the multiple of the full load rating at which the circuit breaker will open as quickly as possible. The instantaneous region is represented in the following curve and is shown to be adjustable from 5x to 10x the breaker rating.

Which curve MCB is best for home?

‘B’ Curve MCB is used for the protection of circuits with equipment that does not cause surge current, like lighting and distribution circuits. So they are, the best fit for residential applications and domestic appliances with mainly Resistive Load.

What is the tripping time of a circuit breaker?

between 30 ms and 150 ms
Circuit breakers are usually able to terminate all current very quickly: typically the arc is extinguished between 30 ms and 150 ms after the mechanism has been tripped, depending upon age and construction of the device. The maximum current value and let-through energy determine the quality of the circuit breakers.

What is current trip?

A circuit breaker “trips” (shuts off the electrical flow) in order to protect the circuit from overheating. It’s a safeguard that helps prevent damage and electrical fires.

How do you solve an amp trip?

Multiply the amps by the volts. In most circuits, this will be 20 x 120 = 2400 or 15 x 120 = 1800. The number resulting from this equation is the maximum wattage load you can place on the circuit before tripping the breaker.

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