This standard specifies the relevant dimensional requirements for the correct design of electrical appliance mounting rails and electrical appliances fixed on the mounting rails. This standard is applicable to three cross-section types of mounting rails used to fix different electrical components in the control equipment of low-voltage switchgear with the help of accessories or elastic structural members.
JB/T 6525-1992 was changed to GB/T 19334-2003 Dimension of low-voltage switchgear and controlgear-Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations.