FCA-415-CY4

Power relays are devices used in electrical and electronic circuit applications for controlling electrical circuits. FCA-415-CY4 is a power relay, over 2 Amps (2A), which can be used to switch or control the current flow in medium-sized electrical systems. The working principle of the FCA-415-CY4 power relay is based on the principle of electromagnetism, where an electromagnetic action activates the relay switch closed or open depending on the magnetic force. In operation, when the control circuit (input) is supplied with the rated voltage, an electromagnetic force is generated, attracting the armature towards the magnet and closing the contact of the relay.

The FCA-415-CY4 is designed with two changes in the contact configuration. It has two Form “C” contacts (normally open and normally closed) positioned inversely, one contact closes the other one opens. This is particularly useful when the closing of one switch causes the opening of another switch in the same circuit. This configuration also prevents short circuits which could potentially cause damage to the components.

The power relay has four mounting threads on the base plate, and two terminals to connect the control circuit (input) and the contact circuit (output). The control circuit in the relay consists of a permanent magnet, a coil and a movable armature. The coil is connected in series with the input power supply, when the supply voltage is applied, a magnetic field is created which attracts the armature towards the magnet, closing the contact on the output side. The armature also acts as a lever to open and close the contacts.

To disconnect the contact in the switch, the supply voltage is switched off, which causes the magnetic field to collapse and the armature to be released, thus opening the circuit. The main advantage of using a power relay is that it takes very little current to maintain the contact closed. It also reduces the risk of short circuits.

The FCA-415-CY4 power relay is widely used in various applications including automotive, control circuit protection, power tools, industrial control systems, etc. It is capable of controlling currents of up to 220V/15A for AC supply and 28V/2A for DC supply. It is compact and sturdy and suitable for use in harsh environments. It is also RoHS compliant and is UL recognized.

In conclusion, the FCA-415-CY4 power relay is a reliable and efficient electrical switch over 2A current for medium-sized electrical circuit applications. It is based on the principles of electromagnetism with two Form “C” contacts for switching and two terminals to connect the control and contact circuits. It is designed for use in a wide range of applications and can be used in harsh environments.