KU-11A31-120

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Power Relays, Over 2 Amps

KU-11A31-120 is a power relay that is especially designed for applications where high currents are expected or needed. This type of relay is often used in applications where high current needs to be moved or controlled accurately. This article will focus on the application fields and working principles of KU-11A31-120.

Application fields

KU-11A31-120 is mainly used in the following application fields:

• Load shedding
• Motor control applications
• Switchgear
• Protection & control systems
• Building automation

KU-11A31-120 is perfect for applications that demand high current and precise control. It features excellent protection for electric motors with its low voltage drop and fast operation. It can also provide protection against overloads and faults.

Working principle

KU-11A31-120 is a power relay that conforms to IEC 61810-3 standards. It features a silicon controlled rectifier (SCR) which is triggered by a set of contacts. The SCR is in turn connected to a motor which is operated based on input signals from the contacts. The SCR is used to control the flow of current and voltage through the motor.

The KU-11A31-120 features a normally open contact configuration. This means that it will only conduct current when it receives a signal, otherwise it will remain open. This type of relay is often used for reversing, starting or stopping an electric motor. It is also used to switch between manual and automatic operations.

The KU-11A31-120 is equipped with a voltage sensing circuit which monitors the local voltage supply. When the sensed voltage drops below a set threshold, the KU-11A31-120 will trigger the SCR and start the motor. The voltage sensing circuit also prevents the motor from operating when the local voltage is too low.

The KU-11A31-120 also features a protection circuit which prevents the motor from operating if an overload is detected. The protection circuit is designed to sense an overload in the motor\'s operation and will cut off the power to the motor when the overload is detected, thus avoiding possible damage.

The KU-11A31-120 is also equipped with a series of LED indicators which will alert the user of any faults that occur in the motor operation. The indicators will show the direction, load and fault condition of the motor in order to facilitate maintenance.

KU-11A31-120 is a robust and reliable power relay that is highly suitable for applications which require high currents and precise control. It is capable of withstand high peak currents, has excellent protection against overloads and faults and is equipped with LED indicators for easy fault finding. It is therefore perfectly suited for powering motor control applications.

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