data for Safety Switches
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SWITCHES ACCORDING TO IEC 60 947-3. SWITCH PROTECTION AGAINST OVERVOLTAGE A mechanical switching device capable of making, carrying and breaking currents under normal circuit conditions which may include specified operating overload conditions and also carrying for a specified time currents under specified abnormal circuit conditions such as those of short circuit. Note: A switch may be capable of making, but not breaking, short-circuit currents. Uimp (Impulse withstand voltage) defines the device’s use in abnormal network conditions with overvoltage due to lightning on overhead wires etc. This characteristic also defines the device’s dielectric quality. Overvoltage protection is ensured by choosing the equipment according to Uimp. The 4 impulse withstand categories of use at 400V/ 690V (IEC 60 364-4-44) are: Applications specially protected equipment Portable tools, motors, etc. Equipment placed in distribution networks Equipment placed at the head of an installation. A mechanical switching device which, in the open position, complies with the requirements specified for the isolating function. Disconnector: (working definition) device without on-load making and breaking capacity. SWITCH DISCONNECTOR / LOAD BREAK SWITCH A switch capable of making, carrying and breaking currents under normal circuit conditions and which, in the open position, complies with the isolating requirements specified for a disconnector. SWITCH DISCONNECTOR FUSE A switch-disconnector in which one or more poles have a fuse in series in a composite unit. The Uimp rating for most of the Katko switches is 8kV. OPERATING TEMPERATURE The normal operating temperature for Katko switches is in the range -40 to +80°C. For higher ambient temperatures than +40°C the maximum load of the switch might be derated. For the right application, please contact KATKO for further information. UTILIZATION CATEGORY CONFORMITY TO STANDARDS Utilization category Connecting and disconnecting under no-load. Switching of resistive loads including moderate overloads Switching of mixed loads, inductive and resistive loads including moderate overloads Switching of motor loads or other highly inductive loads Katko switches are designed to comply with both national and international standards. -Switches tested acc. to IEC 60 947 -AC 23 / 690V ratings -50 kA R.M.S values -CB certificates -UL, CUL listed (UL 508) -Fuse holder acc. to IEC 60 269 / UL512 Data subject to change without notice

SAFETY SWITCHES / ISOLATORS 10 - 630 A Enclosures: Polycarbonate (KEM) IP66/IP65 ABS (KEM) IP65 Sheet steel (KET) IP65/IP55 Aluminium (KEA) IP66/IP65 Stainless steel (KER) IP66/IP65 Tested according to IEC 60 947-3 and UL 508 (polycarbonate 25-150 A) CB certificates Comply with ISO 9001 and ISO 14001 AC-23, 690V ratings R.M.S values 50 kA Multiple break with silver rivets Airgap 12,5 mm Door interlock Lockable handle Reliable position indication Standard grey/black and yellow/red series grey/black= grey cover, black handle yellow/red= yellow cover, red handle Standard models 3P, 4P, 6P and...

SAFETY SWITCHES / ISOLATORS 10-630 A TECHNICAL DATA SAFETY SWITCHES / ISOLATORS Back-up fuse (A) R.M.S. value, Ik (kA) Peak value (kA) Impulse withstand voltage, Uimp (kV) Rated short circuit making capacity, Icm (kA) Rated insulation voltage, Ui (V) Rated thermal current, Ith (A) Nominal values with cable size (mm2) Rated operational current, Ie (A) 400/415V Rated short time withstand current (1 s), Icw (kA) Rated breaking capacity, Icn (A) AC-23 Electrical endurance (operations) Mechanical endurance (operations) Terminals / Bolt size Cu (mm ) Max terminal torque (Nm) Data subject to...

SAFETY SWITCHES / ISOLATORS 10-630 A TECHNICAL DATA Safety switches / Isolators Rated insulation voltage, Ui (V) Rated thermal current, Ith (A) Nominal values with cable size (mm2) Rated operational current Rated short time withstand current (1 s), Icw (kA) Rated breaking capacity, Icn (A) Data subject to change without notice AC-23 Electrical endurance (operations) Mechanical endurance (operations) Terminals / Bolt size Cu (mm ) Max terminal torque (Nm)

KATKO’S EASY TO USE RANGE OF ENCLOSED SWITCHES Polycarbonate (IP66) or ABS (IP65) enclosure. Good resistance against UV and many chemicals. Available in grey/black or yellow/red. stainless steel screw fixing 5 cable entries: M20 & M25 mm as standard on the top and bottom and M20 on the base. Knockout glands are easy to open. Retrofit ‘snap on’ auxilliary contacts. No need to touch existing cabling. Neutral & earth terminals fitted on 3 pole switch. Only earth on 4 pole switch. Door interlock with defeat mechanism Self-extinguishing material and excellent insulating properties Padlocking in...

IP / NEMA CLASSIFICATIONS OF PROTECTION IP CLASSIFICATIONS Ingress protection class of enclosures is according to IEC 529 given in form of IP classification, a two digit coding which is shown below. NEMA/UL CLASSIFICATIONS The National Electrical Manufacturers Association (NEMA) is a US Manufacturers organisation. NEMA performance criteria and test methods are used by Underwriters’ Laboratories as guidelines for investigation and listing of electrical enclosures. FIRST NUMBER Protection against solid objects (Approximate IP equivalents in parentheses) Indoor use primarily to provide a...

LOAD BREAK SWITCHES 16-630 A ROTARY AND TOGGLE SWITCHES ASSEMBLY EXAMPLE LK10 handle General information: The professional range of KATKO Load Break Switches consists of rotary and toggle switches. Types KU, VKA and VKE are rotary switches while KUE and EVA are toggle switches. The KATKO range is available from 16 A up to 630 A. Also 800-3150 A is available on request. KU/VKA KUE/EVA VKE Rotary switches are available as 3-pole, 4-pole, 6-pole and 8-pole. Katko switches are rated up to 690V. Katko Load Break Switches comply with and are tested according to IEC 60 947-3, IEC 60 269-2, UL 508...

LOAD BREAK SWITCHES 16-250 A ROTARY AND TOGGLE SWITCHES LOAD BREAK SWITCHES Nominal values with cable size (mm2) Rated operational current, Ie (A) Rated insulation voltage, Ui (V) Rated thermal current, Ith (A) AC-23 Electrical endurance (operations) Mechanical endurance (operations) Terminals / Bolt size Cu (mm ) Max terminal torque (Nm) *415 V Data subject to change without notice