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IEC

PDF Standards IEC 61811-52 Ed. 2.0 en:2002

Electromechanical all-or-nothing relays – Part 52: Blank detail specification – Electromechanical all-or-nothing telecom relays of assessed quality – Two change-over contacts, 20 mm x 10 mm base
standard by International Electrotechnical Commission, 03/12/2002

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IEC

PDF Standards IEC 61482-1-2 Ed. 2.0 b:2014

Live working – Protective clothing against the thermal hazards of an electric arc – Part 1-2: Test methods – Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)
standard by International Electrotechnical Commission, 10/09/2014

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IEC

PDF Standards IEC 61249-2-33 Ed. 1.0 b:2009

Materials for printed boards and other interconnecting structures – Part 2-33: Reinforced base materials, clad and unclad – Non-halogenated modified or unmodified resin system, woven E-glass laminate sheets of defined relative permittivity (equal to or less than 4,1 at 1 GHz) and flammability (verti
standard by International Electrotechnical Commission, 02/11/2009

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