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Latching relays need just a short pulse of voltage to change state.

30th March 2007

Switchtec Ltd

ES Admin

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Available from specialist distributor Switchtec, Hongfa latching relays require just a short pulse of voltage to change state. As opposed to conventional relays that require a continuous supply of power to remain energised - therefore consuming far more energy - the Hongfa latching relays save energy compared to an equivalent relay, or in the case of the larger sizes, contactors.

Aimed at almost any application where energy saving is required, the latching relays will find favour with OEMs, CEMs, panel builders, and equipment manufacturers in applications such as control panels, soft starters, metering applications and energy management.

The Hongfa latching relay series from Switchtec ranges from the small PCB HFD2 telecom relay rated at 2A, up to the large 200A rated JE6 surface mount relay that can be used in place of an energy thirsty contactor. Spanning these two current levels are relay ranges rated at 8A, 50A, 60A, and 100A.
The larger latching relays have a patented linear drive unit, the technology being based on a short current path, providing a reduced overall resistance, therefore reducing heat build up. The larger relays also benefit from a 3mm contact gap that offers improved isolation in certain high voltage applications.
Most of the Hongfa latching relays are PCB mounting, however the larger variants are surface mount and utilise copper terminals for connections. These copper terminations are available in various options and custom versions can also be supplied.

All are RoHS compliant, and making them suitable for use in export equipment, most of the Hongfa latching relays have UL/CSA and CQC approvals. The relays are available now, ex stock from Switchtec.