TR14D3AN

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Part Status:	Active

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Time Delay Relays

Time Delay Relays are electrical devices that introduce a time delay between the activation of a signal input and the activation of a signal output. More simply, a time delay relay delays the activation of a signal, be it electrical, mechanical, or hydraulically operating, for a predetermined amount of time. These relays are often utilized in electronic control systems and circuit protection applications, replacing the conventional mechanical time delays and operational sequences.

TR14D3AN Application Field

Time Delay Relays commonly used are the TR14D3AN series, which are single-pole double-throw (SPDT) time delay relays. SPDT time delay relays are often utilized in industrial and commercial projects which require a precise, digital-coded, multi-stage timing device, with an adjustable timer. Some typical application fields of the TR14D3AN series time delay relays are household appliances, lighting circuits, office automation, remote switching, motor control, and industrial manufacturing process automation.

TR14D3AN Working Principle

The TR14D3AN series time delay relays have two energizing coils, a normally-open (NO) contact, and a normally-closed (NC) contact. The operation of this type of relay involves powering one or both of the coils either simultaneously or separately. When the energized coil is balanced with the operating force of its spring, the contact is stable in either the NO or NC configuration. Depending on the operating voltage, the timer can be mechanically adjusted to shorten and lengthen the time delay accordingly. When one of the two coils is operated, its contact starts to open, starting the timer. The other energized coil maintains the timer reset. When the timer reaches its pre-set timing interval, the contacts switch over to the final position until they are reset by either releasing the energized coil or by powering one or both of the coils again. This system of powering and resetting the relay makes the TR14D3AN time delay relays easily adjustable, giving it a great versatility.

Conclusion

Overall, the TR14D3AN series is a highly versatile and adjustable time delay relay that can be used in industrial and commercial applications. Given its SPDT type of design, the relay can offer many unique operational advantages in a single package. With an adjustable timer, the TR14D3AN series time delay relays can be programmed to delay the signal for a predetermined amount of time, making it well-suited for various application fields such as electric control systems, circuit protection, motor control, process automation, and other automotive functions.

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