C-1
APPENDIX CCSA and FM Intrinsic Safety Approvals

CANADIAN STANDARDS ASSOCIATION (CSA)

The275 is intrinsically safe for use in Class 1, Division 1, Groups A, B, C,
andD hazardous locations when connected to CSA certified intrinsic safety
barriersas indicated in the recreated connection diagram drawing displayed
below.
I.S.
Barrier Power
Supply
HazardousArea Non-HazardousArea
CSACertified
IntrinsicallySafe
Device
00275-0082
DWGNo.
Rev.A. Sheet1 of 1
30VMax, 330 O hms Min
28VMax, 300 Ohms Min
22Vmax, 180 Ohms Min
Certified
intrinsicsafety bar riers are listed below
TITLE:275 CSA INTRINSICALLY SAFE CONFIGURATION
“Ex1a”
INTRINSICALLYSAFE / SECURITE INTRINSEQUE
Load
+_