Holding relay
An electrical relay that is closed by sending a pulse of current through the coil. It remains closed until the current flowing through its contacts is interrupted.
Aviation Maintenance Technician Handbook — Airframe, p. G-18
An electrical relay that is closed by sending a pulse of current through the coil. It remains closed until the current flowing through its contacts is interrupted.
Aviation Maintenance Technician Handbook — Airframe, p. G-18