BS EN 54-17:2005 - Page 2

BS EN 54-17:2005 specifies requirements, test methods and performance criteria for shortcircuit isolators, for use in fire detection and fire alarm systems for buildings (see EN 54-1).

Means of isolation or protection incorporated within control and indicating equipment (item B in Figure 1 of EN 54-1:1996) are not covered by this European Standard.