CSA M-07

This Technical Information Letter (T.I.L.) applies to DC arc-fault protective-devices (DC-AFPDs) and devices incorporating arc-fault circuit protection intended for use in direct current circuits having a maximum voltage rating of 1000V. A DC-AFPD is intended to detect and mitigate the effects of arcing faults, which may pose a risk of fire ignition under certain conditions if the arcing persists. A DC-AFPD is not intended to detect glowing connections. If the functional component that performs the AFPD function is intended to also perform other functions, such as overload protection, short-circuit protection, ground fault circuit interruption, surge suppression, other similar functions, or any combination thereof, it shall comply additionally with the requirements of the applicable CSA Standard or Standards that cover devices that provide those functions. This Technical Information Letter contains construction, test and marking requirements for DC-AFPDs and shall be used in conjunction with CSA Standards CAN/CSA-C22.2 No. 5, CAN/CSA-C22.2 No. 144.1, and C22.2 No. 107.1 as applicable.