Industrial solid state relays from Switchtec meet industrial applications

Designed to meet the growing demand for longer lasting relays in industrial high speed switching applications, Kudom’s KSV series solid state relays (SSR) are DIN-rail mountable and are supplied with an integral heatsink.

They are available through distributor, Switchtec, for use in applications including PLC interface duties and process control in automation and processing equipment embracing high-low temperature chambers, plastics machinery, incubation machines, oiling machines, elevators, lighting, fountain controllers. The relays are aimed at designers, heating and ventilation (H&V) panel builders, original equipment manufacturers (OEMs) and system integrators.

According to Switchtec, the major benefit of the KSV series is its modular construction. The relays are supplied complete with a built in heatsink, DIN-rail mounts and a surface mount clip. Switchtec says that competing, standard SSRs often require users to order the relay, protection cover, thermal pad and heatsink separately. Selecting the correct size of heatsink can be a headache, says Switchtec. A major benefit of the KSV series is that a single part number specifies and purchases a correctly rated and fully kitted out relay, ready to install and use.

As SSRs, the compact KSV series provide fast, reliable switching, and with no moving contacts they are suited to applications with high switching levels, rapid switching times and those requiring a very long electrical life. Comparing them with their electro-mechanical (e-mech) equivalents, KSV series SSRs have a fast operating time of 1ms, compared to 15ms for the e-mech.

An added benefit of SSRs over electro-mechanical relays is their silent switching. Particularly where many relays are involved in echoey control rooms and in metal cabinets, e-mech relays can be noisy, clicking on and off in applications where frequent switching is required. SSRs have no moving contacts and are therefore silent running, to reduce noise in the workplace.

The KSV series is available in four current ratings, 10, 20, 30 and 40A and are suitable for switching loads up to 280 or 530V AC for 240 and 480V AC relays respectively. The relays are available with DC control voltages of 4.0 to 32V or 90 to 280V AC, dependent on the version selected. All types are available with zero cross turn on to minimise electrical interference, or random turn on for fast switching applications.

The SSRs are compact, the 10, 20 and 30A relay versions measure 81 x 30 x 110mm, and the 40A version measures 120 x 50 x 110mm. KSV relays are supplied fitted with a built in LED (light emitting diode) that displays the status of the relay – ‘on’ when lit.  Suitable for most industrial applications, the relays are able to operate in an ambient temperature range of -30 to 80 degrees C.

The Kudom KSV series SSRs are cULus-approved and CE-marked. They are available ex stock from Switchtec which also offers in-house or field-based engineers to provide help with product choice and to provide full back-up support at all times.


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