European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D211-00-651-IS
Issue 1
20-08-22
Sheet 2 of 8
3.3. NEC & CEC Ratings
NEC & CEC Class / Division Ratings for US / Canada
Standards
UL 121201-2021 (Ed. 9)
CAN/CSA C22.2 No. 213-17 (Ed. 3)
Ratings
D2xC2XH1
Class I Div 2 ABCD T3 Ta -40°C to +50°C
Class II Div 2 FG T6 Ta -40°C to +50°C
Class III Div 1&2 Ta -40°C to +50°C
D2xC2XH2
Class I Div 2 ABCD T2A Ta -40°C to +50°C
Class II Div 2 FG T6 Ta -40°C to +50°C
Class III Div 1&2 Ta -40°C to +50°C
Installation must be carried out in compliance with the National
Electric Code / Canadian Electric Code
NEC Class / Zone ratings US
Standards
UL 60079-0 (Ed. 7):
Explosive Atmospheres - part 0: Equipment - General
Requirements
UL 60079-7 (Ed. 5):
Explosive Atmospheres - Equipment Protection by Increased
Safety "e"
UL 60079-31 (Ed. 2)
Explosive Atmospheres - Equipment Dust Ignition Protection by
Enclosure "t"
Ratings
D2xC2XH1
Class I Zone 2 AEx ec IIC T3 Gc Ta -40°C to
+50°C
Zone 22 AEx tc IIIC T75°C Dc Ta -40°C to
+50°C
D2xC2XH2
Class I Zone 2 AEx ec IIC T2 Gc Ta -40°C to
+50°C
Zone 22 AEx tc IIIC T85°C Dc Ta -40°C to
+50°C
Installation must be carried out in compliance with the National
Electric Code.
CEC Class / Zone ratings Canada
Standards
CAN/CSA C22.2 No. 60079-0 (Ed. 4) 02/2019
Explosive Atmospheres - Part 0: Equipment - General
Requirements
CAN/CSA C22.2 No. 60079-7 (Ed. 2)
Explosive Atmospheres - Equipment Protection by Increased
Safety "e"
CAN/CSA C22.2 No. 60079-31 (Ed. 2)
Explosive Atmospheres - Equipment Dust Ignition Protection by
Enclosure "t"
Rating
D2xC2XH1
Ex ec IIC T3 Gc X Ta -40°C to +50°C
Ex tc IIIC T75°C Dc Ta -40°C to +50°C
D2xC2XH2
Ex ec IIC T2 Gc X Ta -40°C to +50°C
Ex tc IIIC T85°C Dc Ta -40°C to +50°C
Installation must be carried out in compliance with the Canadian
Electric Code
4)
Zones, Gas Group, Category and
Temperature Classification
Area Classification
Zone 2
Explosive gas air mixture not likely to occur in
normal operation, and if it does, it will only
exist for a short time.
Zone 22
Explosive dust air mixture not likely to occur
in normal operation, and if it does, it will only
exist for a short time.
Gas Groupings
Group IIA
Propane
Group IIB
Ethylene
Group IIC
Hydrogen and Acetylene
Temperature Classification for Gas Applications
T1
450ºC
T2
300ºC
T3
200ºC
(D2xC2XH1 only)
Dust Groupings
(ATEX / IECEx / UKEX only)
Group IIIA
Combustible Flyings
Group IIIB
Non-conductive Dust
Group IIIC
Conductive Dust
Maximum Surface Temperature for Dust Applications
(ATEX / IECEx / UKEX only)
D2xC2XH1
75°C
D2xC2XH2
85ºC
Equipment Category
3G / 3D
Equipment Level Protection
Gc, Dc
Ambient Temperature Range
-40°C to +50°C
IP Rating
IP6X to EN/IEC60079-0
IP66 to EN60529
To maintain the ingress protection rating, the two off cable entries
must be fitted with suitably rated, certified cable entry and/or
blanking devices during installation.
Type Rating
Per UL50E / NEMA250: 4 / 4X / 3R / 13
Installation must be carried out in compliance with the latest
issue of the following standards:
EN60079-14 / IEC60079-14: Explosive atmospheres - Electrical
installations design, selection and erection
EN60079-10-1 / IEC60079-10-1: Explosive atmospheres -
Classification of areas. Explosive gas atmospheres
EN60079-10-2 / IEC60079-10-2: Explosive atmospheres –
Classification of areas. Explosive dust atmospheres
