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In-depth analysis of the working principle of relays
Time: 2021-04-02

In-depth analysis of the working principle of relays

Thermal relay is generally composed of heating element, control contact and action system, reset mec...

Analysis of 4 Common Pushbutton Switch Structures
Time: 2021-04-02

Analysis of 4 Common Pushbutton Switch Structures

4 common Pushbutton Switches: Push Button Switch, Emergency Stop Switch, Selector Switch, Key Switch...

Buzzer selection guide and working principle
Time: 2021-04-02

Buzzer selection guide and working principle

Buzzer is a kind of voice device that converts audio model into sound signal. It is mainly used to p...

The difference between 4 common relays
Time: 2021-04-02

The difference between 4 common relays

Relay is an automatic control device whose output will change by leaps when the input (electricity, ...

The working principle of emergency stop button
Time: 2021-04-02

The working principle of emergency stop button

As a special function button commonly used in industry, emergency stop button is usually installed i...

Function of closed contact of emergency stop button
Time: 2021-04-02

Function of closed contact of emergency stop button

How does the normally closed contact work in the emergency stop button?  After emergency stop button...

How does a push button switch work?
Time: 2021-04-02

How does a push button switch work?

1. How does a push button switch work? Push button switch is a small switching device used to close ...

Why is a buzzer used in a circuit?
Time: 2021-04-02

Why is a buzzer used in a circuit?

1. Why is a buzzer used in a circuit? A buzzer is an audio signal device, which may be mechanical, e...

What is a contactor?
Time: 2021-04-02

What is a contactor?

1. What is a contactor? A contactor is an electrically-controlled switch used for switching an elect...

What are CT and PT in transformer?
Time: 2021-04-02

What are CT and PT in transformer?

1. What are CT and PT in transformer? CT means current transformers, which main are used in clamp me...

What is the function of the indicator light?
Time: 2021-04-02

What is the function of the indicator light?

1. What is an indicator lamp? A device, that monitors the working or position status of circuits and...

What is function of limit switch?
Time: 2021-04-02

What is function of limit switch?

1. What is function of limit switch? A limit switch which regulates the electrical circuit to contro...

What is selector switch in electrical?
Time: 2021-04-02

What is selector switch in electrical?

1. What is selector switch in electrical? A selector switch can control on or off of different curre...

What is a relay?
Time: 2021-04-02

What is a relay?

1. What is a relay? A relay is the device that opens or closes the contacts to cause the operation o...

What is a Cam Switch?
Time: 2021-04-02

What is a Cam Switch?

1. What is a Cam Switch?Cam switches are mainly used within the low voltage range. On a shaft, switc...

Siemens APT 2018 National Distributors Annual Meeting
Time: 2021-04-02

Siemens APT 2018 National Distributors Annual Meeting

On September 21, 2018, Siemens APT held the 2018 National Distributors Conference in Chengdu.This me...

APT successfully passed the ISO9001:2015 QMS license
Time: 2021-04-02

APT successfully passed the ISO9001:2015 QMS license

Aug.22-24th,2017,the TUV Rheinland carried out the ISO9001:2015 quality management system license ve...

2017 Siemens APT Distributors’ Forum
Time: 2021-04-02

2017 Siemens APT Distributors’ Forum

2017 marks the ninth session of the APT National Distributors Forum,For nine years, we have been com...

Top Ten Most Influential Engineering Projects of the Year
Time: 2021-04-02

Top Ten Most Influential Engineering Projects of the Year

On April 13th, 2017, the “Annual Conference for the Automation Industry in China” was grandly held i...

APT2016 Annual Dealers’ Conference
Time: 2021-04-02

APT2016 Annual Dealers’ Conference

Looking back eight years ago – Group photo in 2009 (at Bayshore Hotel in Dalian);Eight years later &...

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