Description

• A relay is an electrically operated switch.
• Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays.
• Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal.
• Relays were used extensively in telephone exchanges and early computers to perform logical operations.
• A Contactor is a type of relay that can handle the high power required to directly control an electric motor or other loads.
• Solid-state relays control power circuits with no moving parts, instead using a semiconductor device to perform switching.
• Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults.
• In modern electric power systems, these functions are performed by digital instruments still called “protective relays”.
• Magnetic latching relays require one pulse of coil power to move their contacts in one direction, and another, redirected pulse to move them back.
• Repeated pulses from the same input have no effect.
• Magnetic latching relays are useful in applications where interrupted power should not be able to transition the contacts.
• Magnetic latching relays can have either single or dual coils.
• On a single coil device, the relay will operate in one direction when power is applied with one polarity, and will reset when the polarity is reversed.
• On a dual coil device, when polarized voltage is applied to the reset coil the contacts will transition.
• AC controlled magnetic latch relays have single coils that employ steering diodes to differentiate between operate and reset commands.

Package Included:

1 X Relay H200F12-1-C 12V DC