High-current relays save space in tight panels

Available from specialist distributor Switchtec, two new high-current latching relays are able to replace contactors in applications where panel space is limited.

Available from specialist distributor Switchtec, two new high-current latching relays are able to replace contactors in applications where panel space is limited.

The compact units are ideal for use in soft starters, electricity metering and many other contactor applications where it is desirable to save space while maintaining current ratings.

Aimed at panel builders and OEMs, the KG K100 and K200 are rated at 100 and 200A, respectively, at a voltage of 480V AC.

Featuring a patented linear drive unit, the relays feature a short current path for overall lower resistance and reduced heat buildup.

A 3mm contact gap offers improved isolation in applications where safety is required as standard.

As latching relays, the units only require a short duration pulse voltage - 50ms minimum - to change state, and therefore consume far less energy than an equivalent contactor that requires a permanently applied voltage to maintain the "on" state.

The KG100 has an SPST contact arrangement and an operating time of 20ms, its big brother the K200 has DPST contacts with an operating time of 30ms.

All units are available with operating coils of 12, 24 and 48V; however, the K100 is also available with a 6V coil.

The relays can operate in a temperature range of -40 to +70C.

Technically superior to units from other manufacturers, the KG latching relays have been submitted to, and tested by recognised, highly regarded approvals bodies, and are approved to UL/cUL508 and VDE DIN EN60947 contactor standards.

The K100 relay has a 60A motor load rating from UL that requires a minimum of 50 switching cycles at 600A.

The KG relays from Switchtec offer benchmark performance standards and save space by replacing bulky contactors.

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