IsoSafe catalogue
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SAFETY SWITCHES & ISOLATORS

ENCLOSED SWITCHES General Information Technical Data for Safety Switches / Isolators 16-800 A KEM Polycarbonate 10-630 A KEM ABS 10-80 A EMC 16-630 A KET Sheet Steel 16-1600 A KEA Aluminium 16-250 A KER Stainless Steel 16-1600 A KER Stainless Steel (R/RS) 16-160A KER Stainless Steel IP69K 16-125A KSM Side-operated 16-25A Firerated Aluminium Enclosed 16-200 A Side Operated Switches 16-40 A ATEX Switches 16-160 A Change-over Switches 16-160 A Bypass Switch for Frequency Inverter 16-63 A Motor Control Switches 16-40 A UL-LISTED PRODUCTS UL98-Listed Enclosed Switches 60-100A Polycarbonate...

SWITCHES WITHOUT COMPROMISES. Katko is a Finnish family business specialising in safety switches, load break switches and fused switches with more than 70 years of experience. Not all safety and load break switches on the market come from specialised manufacturers by any means, and that is precisely why we are so proud of ours. We design and manufacture every product ourselves in our own factories. The challenging Finnish climate creates a basis for developing switches that work in all conditions across the globe. Switches without compromises. This is what we at Katko think, as did the...

FOOD INDUSTRY Food processing. Dairy. Meat packing & processing. Beverage-making. KATKO KER switches can withstand pressurised water, steam and chemical detergents in locations that require a high level of hygiene. Katko’s selection provides you with a range of acid-proof products for most food and pharmaceutical industry applications. Air conditioning. Warm air. Whether we are talking about cooling or heating, Katko provides an extensive selection of products suitable for demanding air conditioning from ORs to work safety for all industries. The UV protected plastics and aluminium enclosed...

HAZARDOUS AND DEMANDING AREAS Mining. Oil. Gas. Fire. Marine. Katko will switch electricity on and off in demanding and hazardous conditions as well. Our selection includes products such as ATEX certified switches for dusty environments, Rina and Lloyd’s classified products for the maritime industry, and high temperature resistant solutions complying with the EN 12101-3 standard. POWER DISTRIBUTION Standard panel. Switchgear. Distribution boards. Switchboard and switchgear manufacturers appreciate Katko’s technician-friendly products and accessories, as well as the products’ reliability and...

Data subject to change without notice 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. Knock-out glands are easy to open. Retrofit ‘snap on’ auxilliary contacts. No need to touch existing cabling. Neutral & earth terminals Fitted on 3 pole switch. 1, 2 and 4P switches only earth. Door interlock with defeat mechanism Self-extinguishing material and...

Data subject to change without notice IP / NEMA CLASSIFICATIONS OF PROTECTION IP CLASSIFICATIONS Ingress protection class of enclosures is according to IEC 60 529 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 SECOND NUMBER Protection against solid objects Protection against liquids...

Data subject to change without notice 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...

Data subject to change without notice SAFETY SWITCHES / ISOLATORS 10 - 800 A • Enclosures: Polycarbonate (KEM) IP66/IP65 Polycarbonate (KSM) IP67 ABS (KEM) IP65 Sheet steel (KET) IP65 Aluminium (KEA) IP66/IP65 Stainless steel (KER) IP69K/IP66/IP65 • Tested according to IEC 60 947-3 and UL 60947-4-1A • CB certificates • VDE certificates • Comply with ISO 9001 and ISO 14001 • AC-23, 690V ratings • 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...

Data subject to change without notice SAFETY SWITCHES / ISOLATORS 10-800 A TECHNICAL DATA SAFETY SWITCHES / ISOLATORS Rated insulation voltage, Ui (V) Rated thermal current, Ith (A) Rated thermal current, Ithe (A) Nominal values with cable size (mm2) Rated operational current, Ie (A) 400/415V AC-21A Rated operational power for 3-phase (1500 r.p.m.) squirrel cage induction motors (kW) 400/415V AC-23A Rated fused short circuit current 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 short time...

Data subject to change without notice SAFETY SWITCHES / ISOLATORS 10-800 A TECHNICAL DATA Safety switches / Isolators Rated insulation voltage, Ui (V) Rated thermal current, Ith (A) Rated thermal current, Ithe (A) Nominal values with cable size (mm2) Rated operational current AC-21A Rated operational power for 3-phase (1500 r.p.m.) squirrel cage induction motors (kW) 110 Impulse withstand voltage, Uimp (kV) AC-23A Rated fused short circuit current Rated short circuit making capacity, Icm (kA) Rated short time withstand current (1 s), Icw (kA) Rated breaking capacity, Icn (A) AC-23A...