Latching relays are only energised while switching and use less power than non-latching designs in most applications. The G5RL-U and G5RL-K are both capable of switching up to 16A and dealing with up to 150A inrush currents.
Supplied in SPST-NO form, the latching relays are approved to a VDE standard demanding resistance to over 150A inrush and also carry UL TV-8, a standard that exposes components to 117A inrush currents.
The G5RL-U features a single coil whilst the G5RL-K has a double coil architecture. An SPDT version is also available, though the specifications for this device are lower.