Find the most up-to-date version of IEC at Engineering Buy IEC Ed. High-voltage alternating-current circuit-breakers from SAI Global. IEC High Voltage Alternating Current Circuit Breakers. Be notified when this Standard is updated or amended – Add to StandardsWatch. General.
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Metallgekapselte Wechselstrom-Schaltanlagen fuer Nennspannungen ueber 1 kV bis einschliesslich 52 kV. Also applies to the operating devices of circuit-breakers and their auxiliary equipment.
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Does not cover circuit-breakers intended for use on motive power units of electrical traction equipment, or circuit-breakers for use with overhead lines which include series capacitors.
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Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Click to learn more.
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Two-pole circuit-breakers for use in single-phase systems are subject to agreement between manufacturer and user. You may experience issues viewing this site in Internet Explorer iecc, 10 or This website is best viewed with browser eic of up to Microsoft Internet Explorer 8 or Firefox 3.
We accept all major credit cards American Express, Mastercard and VisaPayPal and bank transfers as form of payment. However, circuit-breakers with a closing mechanism for dependent manual operation are not covered since a rated short-circuit-making current cannot be specified, and dependent manual operation may be objectionable because of safety considerations.