Modular contactor: Definition, working and advantages

How do you define a modular connector?

Modular contactors are one type of device for switching that controls the load of a small capacity with no hum or hum noise when it is in use. It can be positioned on the DIN rail. It is small in size and is suitable for use to make small electric enclosures as well as cabinets.

They are designed to be used in DIN Rail bars in combination with the low voltage offers. They offer secure switching and control for various applications, as well as protection against high current and voltage spikes. They can also be a an efficient solution for cost reduction, due to their low power consumption. DC coils.

Its operation is similar as a power-contactor.

1. The module contactor’s coil gets powered.
2. Main contacts move in a different direction. (From NO to NC or NC to NO)

3- Electric energy is transferred from the supply side to the load.

A power contactor emits an audible hum while switching. It is possible to hear this alarming noise even if the cabinet door is shut. A modular contactor ensures silent operation. This is why it is called silent contactor. This is the primary aspect that distinguishes this type of contactor, which is modular in comparison to the traditional power.

A modular type of contactor can be popular in indoor settings because of its low-noise operation. It can meet the demands of various applications, including residential and hotels. It is typically utilized to regulate lighting loads. It also is used for the control of pumps, small fans as well as heaters, elevators and pumps.

Modular contactors play a crucial part in the development of wide-ranging applications, like circuits to reduce load as well as access control via card readers in hotels and apartments. With them, it is possible to achieve it is possible to completely shut down the power supply in the whole circuit or the circuit in question at the time of departing

The facilities are available to be utilized.

Benefits

Modular contactors offer the following advantages for the users of it.

• It is hum-free and has a low power consumption.
• It dissipates less heat.
• It’s easy to set up.
• The modular contactor is comparable to relays for contactors (auxiliary contacts) in regards to contact combinations. 1NO + 2NC, 2NO + 2NC etc.

• It’s compact and doesn’t take up any space.
• Mounting options for accessories are restricted compared the power contactors.
• It appears as if tiny circuit breakers. It has the din-rail-like profile. It is difficult to discern visually when using MCBs within the enclosure. However, the general look of the panel is nice when it is equipped with modular contactors.
• It typically generates by up around 15kW. It is therefore suitable to switch off lower loads.
• The coils in the more advanced models are available with AC as well as DC. Additionally, they are equipped with surge-protection features.
• Certain models are able to be controlled by hand.
• It comes with contact indicators.

Selection parameters

If you are choosing an modular type of contactor these factors should be taken into consideration:

• Contacts that are combined.
• Operating voltage that is rated.
• Rated operational in the present.
• Control (or coil) voltage.
• Ambient air temperature.
• Mechanical and electrical endurance.

If you’re using an adjustable contactor for lighting applications, it is important to be able to control the type and amount of lighting fixtures that can be connected to the same contact to the. In particular, in this day and age where the usage for LED lights is growing the contactor has to be able to stand up to both the inrush and nominal currents of lighting fixtures.

 

Applications

The most commonly used uses of the modular contactor include:

• Lighting (The primary use for modular contactors)
• E-mobility (incl. in AC-circuits)
• HVAC.
• AC circuit distribution.
• Pumps and small motors.
• DC circuit distribution.
• DC motors.
• Elevators.
• Ships.
• Backup power switching. Read more.