SG378

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Inrush Current Limiters (ICLs) are components designed to limit the amount of current flowing through a circuit during startup or other transient processes. By limiting the amount of current that can flow, ICLs can protect components from damage and ultimately improve the performance of an entire circuit. Below, we will discuss SG378 ICLs in particular, its application field and working principle.

SG378 Application Field

SG378 ICLs are suitable for a wide range of applications where current needs to be limited during start-up or transient activity. The SG378 is designed for systems running directly from an AC power supply, and it is typically found in applications such as:

• AC motor drives
• UPS systems
• Air conditioning equipment
• Industrial robot systems
• Data centrres

The SG378 ICLs are available in several different voltage and current ratings, allowing designers to choose one that will provide optimal performance for a given application.

SG378 Working Principle

The SG378 ICL is a combination of a high-current inductor and an integrated switch. The switch is triggered when the current flowing through the circuit reaches a certain level. This trigger current can be set by the user and is usually in the range of 10 to 20 amperes.

When the switch is triggered, it limits the amount of current allowed to flow through the circuit. This is accomplished by switching the inductor in and out of the circuit in a rapid sequence, allowing the current to ramp up slowly and safely. When the current reaches the set limit, the switch is deactivated and the normal current flow is allowed to continue.

The SG378 also includes a thermal protection system, which will trip the switch if the ambient temperature rises above a certain level. This prevents the switch from overheating and prevents against potential fire hazards.

Conclusion

The SG378 ICLs are high-performance components designed to limit the flow of current in AC circuits during start-up or other transient activity. They are suitable for a wide range of applications, and their voltage and current ratings can be adjusted to optimize performance. The SG378 includes a thermal protection system to prevent against potential fire hazards.

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