DNV DNV TAP NO. MR-E004 PDF

General description of the product

Description of product according to IEC IEV 441-14-10. Switch (mechanical): is 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.

Application limitations

• Restricted to LV mechanical switches according IEC 60947-3 where the rated voltage does not exceed 1 000 V a.c. or 1 500 V d.c. and without electronic devices.

• Onboard ships with exceptions as per SOLAS Ch. I, Reg. 3.

• Installation on board ships within locations with climatic, biological, chemically active, mechanically active and mechanical environmental conditions not exceeding those for which performance has been proved according to IEC 60721-3-6 (1993) + A2 (1997).