CENELEC EN IEC to DIN to NEMA ICS 1.

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2 General. With the increasing emphasis on globalization, many industries are now looking to all parts of the wld to produce, market and sell their products. Electrical manufacturers are no exception. Since the electrical standards adopted by various nations may vary, the markings and symbols used to describe electrical control products can also vary. Whether it is a complex control system on a machine tool a simple across-the-line mot starter, the need to recognize and understand these symbols becomes me imptant. It is possible that products from all parts of the wld are being used in any one facility. The purpose of this document is to provide a simple cross-reference of common schematic/wiring diagram symbols used throughout various parts of the wld. The graphical symbols were taken from the following standards: BS EEAC E-3. CENELEC EN to DIN to NEA ICS 1. The following tables describe the device and show the symbol by area of usage. Description US / Canadian International / British German Capacit Circuit Breaker agnetic Only Thermalmagnetic Coil 2

3 Description US / Canadian International / British German Nmally Closed Basic Contacts Nmally Open N.C., Timed Closed TC N.C., Timed Open TO Time Delay Contacts N.O., Timed Closed TC N.O., Timed Open TO 3

4 Description US / Canadian International / British German Non-Fused Disconnect Switch Fused Fuse Ground Single Phase 1 1 Induction ot Three Phase 3 3 4

5 Description US / Canadian International / British German Standard Lights, Indicating Insert col code inside symbol Insert col code next to symbol Insert col code next to symbol Push-To-Test Insert col code inside symbol Insert col code next to symbol eters Insert function code inside symbol Insert function code inside symbol Insert function code inside symbol Thermal Element Overload Relay agnetic Element I I Illuminated Push Button omentary (N.C.) 5

6 Description US / Canadian International / British German omentary (N.O.) Push Button ushroom Head (N.C.) ushroom Head (N.O.) Resist 2 Position B A 1 2 Letter Sym A B Position 1 2 X X Select Switch 3 Position B A Letter Sym A B Position X X

7 Description US / Canadian International / British German Float (N.C.) V Float (N.O.) V Flow (N.C.) ν Switches Flow (N.O.) ν Foot (N.C.) Foot (N.O.) Limit (N.C.) 7

8 Description US / Canadian International / British German Limit (N.O.) Pressure (N.C.) p p Switches Pressure (N.O.) p p Temperature (N.C.) Θ ϑ Temperature (N.O.) Θ ϑ Current Transfmer Voltage 8

9 Common Schematic Diagrams Across-the-Line Non-Reversing Starters with Start Stop Push Buttons Power Circuit NEA 1 U V W T1 T2 T3 3 ot Control Circuit NEA L1 Stop Start 2 3 O.L. L2 O A2 A1 I O I Stop Start 9

10 Common Schematic Diagrams Across-the Line Non-Reversing Starters with Hand-Off-Auto Select Switch Power Circuit NEA 1 L2 L3 1 U V W 3 T1 T2 T3 ot Control Circuit NEA L1 2 Hand Off Auto O.L. L2 1-Auto 2-Off 3-Hand A1 A2 10

11 Common Schematic Diagrams Across-the-Line Reversing Starters Power Circuit NEA 3 Phase Lines 1 2 U V W T1 T2 T3 3 ot Control Circuit NEA O 22 L1 Stop F. F 2 3 Rev. 4 R 5 R 6 F F 7 R O.L. L2 F R A1 A2 A1 2 A2 11

12 Common Schematic Diagrams Combination Starter with Fused Disconnect Switch Power Circuit NEA 1 U V W 3 T1 T2 T3 ot Control Circuit NEA O L1 Stop Start 2 3 O.L. L2 1 1 A2 A1 I 0 Stop Start 12

13 Common Schematic Diagrams anual Starter 1 Power Circuit NEA I> I> I> U V W T1 T2 T3 3 ot

14 With offices in maj cities wldwide. WORLD HEADQUARTERS Allen-Bradley 1201 South Second Street ilwaukee, WI USA Tel: (1) Telex: FAX: (1) EUROPE/IDDLE EAST/ AFRICA HEADQUARTERS Allen Bradley Europe B.V. Amsterdamseweg AC Uithon The Netherlands Tel: (31) 2975/43500 Telex: (844) FAX: (31) 2975/60222 A subsidiary of Rockwell International, one of the wld s largest technology companies, Allen-Bradley meets today s automation challenges with over 85 years of practical plant flo experience. e than 11,000 employees throughout the wld design, manufacture and apply a wide range of control and automation products and suppting services to help our customers continuously improve quality, productivity and time to market. These products and services not only control individual machines, but also integrate the manufacturing process while providing access to vital plant flo data that can be used to suppt decision making throughout the enterprise. ASIA/PACIFIC HEADQUARTERS Allen Bradley (Hong Kong) Limited Room 1006, Block B, Sea View Estate 2-8 Watson Road Hong Kong Tel: (852) Telex: (780) FAX: (852) CANADA HEADQUARTERS Allen Bradley Canada Limited 5 Dundas Street Cambridge, Ontario N1R 5X1 Canada Tel: (1) FAX: (1) LATIN AERICA HEADQUARTERS Allen-Bradley 1201 South Second Street ilwaukee, WI USA Tel: (1) Telex: FAX: (1) Publication December 1992 Supersedes Publication September Allen-Bradley Company Printed in USA 16