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Technical Section 14
577
Page
Technical Information 578
CE Marking and EC Directives
Tests and Testing Procedures 580
Mechanical, Electrical, Material and Environmental Tests
Material Specifications 606
Insulation Materials, Contact Plating, Contact Materials and Clamping
Spring Material
UL Specifications — Underwriters Laboratories, USA 600
Tests and Testing Procedures per UL Standards
General Technical Information for Electrical Equipment in Haz- 610
ardous Environments
All terminal blocks used in hazardous environments “Ex e II”
have their item nos. marked with the 4 symbol.
All terminal blocks used in intrinsically safe current circuits
”Ex i” have their item nos. marked with a blue circle.
International Certification Organizations — Overview 622
Electrical Engineering Laboratory: 609
Product Safety for Our Customers
14
