1.1 This standard covers dimensional and functional requirements for the mounting on various types of rails for the mechanical support of electrical devices in switchgear and controlgear installations necessary for mounting compatibility.
1.2 This standard specifies those dimensions which are critical for the correct design of rails and equipment. The following sections are covered by this standard:
a) 'Top Hat' section
b) 'C section
c) 'G' section
Note 1 — Mounting compatibility does not imply functional interchangeability.
Note 2 — The details of design and material of specific steel rails are given in Appendices A and B.
IS 11039-1983 history
1985IS 11039-1983 Requirements for mounting on rails in switchgear and controlgear installations