Phoenix Contact Time Delay Relays

Time delay relays are used in industrial applications that require time-delayed switching, such as starting a motor or controlling a load. In a standard control relay, contacts close immediately when voltage is applied to a coil, and open immediately when voltage is removed. In some applications, it is desirable to have the operation of the contacts delayed following voltage being applied or removed. On-delay timers begin when voltage is applied. When the time has expired, the contacts close and remain closed until the voltage is removed from the coil. If the voltage is removed before time-out, the time delay resets. When using off-delay timers, nothing happens when voltage is applied. Closing the control input causes the contacts to transfer. Opening the control input causes time to begin and the contacts remain closed. On time-out, the contacts transfer. Closing the control input prior to time-out causes timing to reset. Removing voltage prior to time-out resets the timing and opens the contacts.

Phoenix Contact ETD-BL timer relays provide space savings with the compact design and are suitable for use in building installation applications and the series production of machines and systems. The wide range of functions enables universal use in time control applications with time parameters adjusted via rotary switches on the front of the housing. Visible status LEDs provide clear diagnostics.

Phoenix Contact multifunctional ETD timer relays provide a wide range of functions for universal use and feature selectable time ranges to cover all conventional time control applications. They are equipped with two changeover contact outputs and can indicate errors or shut down system parts selectively.