FCA-125-14

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Power relays, more specifically those over two amps, provide an important piece of hardware when it comes to managing electrical systems. The FCA-125-14, a two-pole, five-amp power relay from ESRT Electronics, is a device that enables systems to open and close circuits. This article will explain the application field and working principle of the FCA-125-14.

Application Field

The FCA-125-14 is designed as a basic, general purpose power relay and is best suited for easy, low-cost applications. It’s most suitable for devices such as controlling a motor, controlling an LED, switching audio signals, or for any other circuit that needs to be isolated from the source. The five-amp rating also enables a wide range of applications in low voltage circuits.

Technical Data

The specifications of the FCA-125-14 power relay help us to better understand its application field. Key technical specifications include:

• Coil Voltage: 5V DC
• Contact Rating: 5A
• Switching Saturation Voltage: ≤3V
• Reset Time: ≤2S
• Mounting Type: DIN Rail

Working Principle

The FCA-125-14 power relay works according to the following basic operating principle: When an electrical current is applied to the relay’s coil, an electromagnet is created. The magnet thus created is responsible for activating the movable contact and the armature.

The movable contact creates a path for current to flow between the contacts. When the current is increased or decreased, the contact’s position is adjusted accordingly, and an electrical circuit is opened or closed.

The armature is the part of the relay that is responsible for keeping the relay in its “last” position. Once the current to the coil is removed, the electromagnet is disabled, and the armature returns the relay to a deactivated state, allowing the movable contact to be reset for future use.

As a two-pole relay, the FCA-125-14 is capable of controlling two separate paths for two different currents. That is, if one current is applied to hard resting and another to the hard working pole, the relay will activate when the current is increased and will close the two paths when it is decreased.

Conclusion

The FCA-125-14 is a two-pole, five-amp power relay from ESRT Electronics that is best suited for easy, low-cost applications. It is capable of controlling two separate paths for two different currents and can be used to open and close circuits. The device’s technical specifications and operating principle have been discussed in this article.

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