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Moulded case circuit breaker(MCCB ) provides protection for overload and short circuit in low voltage power distribution system and motor protection loop. Because of its reliability and stability, it has been widely used in industry. Miniature circuit breaker (MCB ) is also used in a wide range a...

Air circuit breaker（ACB) tripping, re-closing failed 1. First determine whether the Air circuit breaker is not accidentally tripped Non-accidental trip means trip without short circuit or overload fault. There are many reasons for the Air circuit breaker not to close. First of all, it is necessa...

Earth leakage circuit-breaker, referred to as “leakage switch, also called leakage circuit breakers, leakage failure is mainly used in equipment as well as to a potentially lethal person get an electric shock protection, overload and short circuit protection function, can be used to protect...

As we all know, c-type MCB is used for common circuit, such as lighting circuit; D type circuit breaker for motor power circuit, so, C type micro circuit breaker can be used for motor circuit? Instead of saying yes or no, let’s first look at the difference between type C and TYPE D MCB: Ty...

There are four universal trip characteristics of miniature circuit breakers: A, B, C, and D. So how do we choose? (1) TYPE A circuit breaker: 2 times the rated current, rarely used, generally used for semiconductor protection (generally use fuse); The so-called number of times the current, is th...

Short-time withstand current (Icw)：The ability of a circuit breaker to withstand 0.05, 0.1, 0.25, 0.5 or 1s without tripping at a given voltage, short-circuit current, or power factor. Rated short-time withstand current, also known as thermal stable current, is the effective current that a circu...

Dual power Automatic switching switch referred to as ATSE, Automatic Transfer switching equipment, commonly known as dual power switching. As the name implies, it is automatically connected to the standby power supply through the double power switch when the power is suddenly cut off, so that our...

Here is how ATSE is applied in different locations： 1  Transformer outgoing side, two incoming lines and one bus connection mode. Through the reliable mechanical and electrical interlock, in the case of power failure, failure or system maintenance of one transformer, the load automatically or m...

ATS power supply system problems exist, the staff must know common sense 1, double power automatic switch in maintenance personnel maintenance, if the circuit is not completely broken, will lead to part of the mechanical equipment charged. 2. When the power supply system is inspected, maintained ...

ATS wroking mode Active/backup mode: When the voltage of any phase of the main power supply is undervoltage, the two power supplies are automatically switched to the standby power supply. When the main power supply returns to normal, the switch should return to the main power supply. Alternate ba...

Automatic transfer switch, so there should be two power supplies, so there should be two incoming switches. Wiring, according to the system, draw the two power, divided into the main, standby, respectively received the two circuit breakers. And which cable is the main use, which cable standby, de...

Molded case circuit breakers are rated from 10A to 1600A, and frame circuit breakers（ACB) are rated from 630A to 6300A. See molded case circuit breaker and air circuit breaker rated current overlap area, sometimes do not know how to choose. There are a few principles here. A primary distributi...