BDH59

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Disconnect switch components are essential components of an electric circuit, since they act as the main controller of a circuit by offering a way to turn off the power of the circuit. The BDH59 is a disconnect switch component, and its application field and working principle are highlighted below.

Applications

The BDH59 is a three-phase manual disconnect switch that is commonly used to connect or disconnect power circuits in demand-responsive systems. Its feather touch button command, which is accompanied by a loud and clear indication sound, makes it a suitable choice for power companies, transmission systems, and telecom and industrial applications.

It can be mounted on trays and walls, with galvanized mounting plates available for each installation. The BDH59 is a highly reliable switch for all regular and frequent switch operations, such as breaker tripping and fuse blowing in residential and industrial settings. It is also ideal for controlling machine tool loads, as well as alternating current on powerfusion networks.

Working Principle

The BDH59 disconnect switch works on the principle of phase cycling. When the feather touch button is pressed briefly, the switch is switched between the open and close position. The contact spring is connected to the switch arm, which in turn pushes the contact arm up and downwards. This causes an unbalanced voltage effect across the switch assembly, which triggers the switching operation.

The contact plates inside the switch housing are connected in series. When the switch is moved between the open and close position, a circuit is created which causes the contact plate to cycle between the two positions due to the magnetic attraction. This phase cycling operation helps to protect the switch from failure due to excessive current flow.

The BDH59 disconnect switch is equipped with an overload protection system. This system prevents the switch from being short circuited due to the transfer of excessive current. When the overload protection system is triggered, the switch will automatically reset itself after the current is reduced to a safe level.

Conclusion

The BDH59 is a powerful and reliable disconnect switch component. Its application field covers most of the regular and frequent switch operations, and its working principle of accidental operation of the switch, making it an ideal choice for power companies, transmission systems, and telecom and industrial applications. With its overload protection system, it serves as an effective safety measure against electrical hazards.

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