MJN3C-N-AC240

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Power relays are widely used in industrial applications, from commanding electrical panels to protecting electrical motors from overcurrent. Among them, there is the MJN3C-N-AC240 model, whose application field and working principle is the subject of this article.

This model belongs to the family of power relays with current ratings that go beyond 2 Amps and, as such, finds applications in some of the most demanding needs in industrial automation processes. As a standard, it is set up as a 5-pin, universal type relay, with the following pin-to-function mapping:

• Pin 1: Common
• Pin 2: NO control (normally open)
• Pin 3: NC control (normally closed)
• Pin 4: NC normally open or NO normally closed
• Pin 5: NO normally open or NC normally closed

The power relay\'s internal parts are those of any standard relay, composed of a contact system, an energizing coil, an armature, and a switching mechanism. Connected to the power supply, upon application of a small voltage to the coil, the device will latch open or closed the electrical current, depending on the control instructions sent by the input (pins 2 and 3).

Additionally, the MJN3C-N-AC240 relay is also equipped with a mechanical flag-system to indicate the status of the switch, having a red flag when the switch is closed and a green flag when the switch is open. This is a safer and more reliable system to track the status of the relay, reducing at a minimum the risk of failures or unsafe operations.

In summary, the MJN3C-N-AC240 power relay is a reliable, easy-to-use device for any industrial application where current ratings over 2 Amps must be handled. Its versatile form factor, its power and efficient operation, and its safe flag system make it an ideal choice for any industrial automation process.

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