25 Construction Data KH, KHR Switches The switches described in this catalog exceed the requirements of IEC 60947-3 and VDE 0660 part 107 and meet the standard on main switches and maintenance switches. The new series offers a 4 pole switch body and symmetrically placed contacts. The adjustable length through shaft offers increased stability and permits interlocking devices to be added at the end of the switch. While reduced forces of the latching mechanism allows for easier operation. The safety level of the KH- and KHR-series in numerous areas surpasses those of many international standard organizations: Positive contact movement during making and breaking operations. Higher air and creepage distances as well as for 800 V or 1000 V and finger-proof terminals according to EN 50274, VDE 0660 part 514 and DGUV V3. (protection IP 20 up to KHR40). Excellent AC-3 and AC-23A making and breaking capabilities providing KH-series KHR-series Nominal Ratings Face plate Frame mm 48 x 48 IEC 60947-3/VDE 0660 part 107 UL and Canada Rated Values Ampere- Rating 3 x 600 V A 16 20 25 20 16 20 25 20 30 40 30 60 80 60 80 Standard Motor Load DOL-Rating 3 x 240 V 3 x 480 V HP HP 2 5 2 5 3 7,5 2 5 2 5 2 5 3 7,5 2 5 5 10 7,5 15 5 10 20 40 25 50 20 40 25 50 Thermal Current Iu/Ith A 16 20 25 20 16 20 25 20 32 40 32 63 80 63 80 Type KH16 KH20 KH25 KHR20 KH16B KH20B KH25B KHR20B KH32 KH40 KHR32 KH63 KH80 KHR63 KHR80 64 x 64 Utilization Category AC-23A AC-3 3 x 380 V-440 V kW 7,5 5,5 10 6,5 12 7,5 10 6,5 7,5 5,5 10 6,5 12 7,5 10 6,5 16 11 20 15 16 11 30 22 40 30 30 22 40 30 an additional safety advantage. For connecting with ring type terminals the KHR-series were designed. The terminal screw is held in place by a clamp allowing the ring type wire lug to be easily inserted in the terminal and tightened. The KH- and KHR-series affords significant advantages during mounting and wiring. For ease of installation, switch terminations are on the same plane as the power conductors. Captive plus-minus screws and integrated screwdriver guides reduce wiring time. All base mounted switches feature a two hole mounting as well as ”quick mount” designed for standard DIN rails according to EN 50022. A large range of optional extras such as lateral mounted auxiliary contacts, ground terminals, auxiliary contacts (installed only at factory) also with contact systems for special programs, door clutches, shaft extensions and padlock devices enhance the flexibility of this proven line. 64 x 64 < back to table of contents >
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