Chromalox Flanged immersion heaters Terminal Enclosures
Immersion
Flanged Immersion Heaters
Terminal Enclosures
Enclosure Styles and Dimensions (Inches)
3-1/2"
6-3/4"
Dimple for locating
chassis punched
conduit opening(s)
Removable
Service Entrance
Plate
263
10-3/8
flanged
E1 — General Purpose, for up to 5" Flange
Dimple for locating
chassis punched
conduit opening(s)
267
10-1/2"
Removable
Service Entrance
Plate
E4 — Moisture Resistant Enclosure with Gasket 6" and Larger
1"ConduitOutlet
E1 — General Purpose, for 6" and Larger Flange
1"ConduitOutlet
3-3/4"
1-1/2"
5
E4 — Moisture Resistant Enclosure with Gasket up to 5" Flange
3-3/4"
1-1/2"
5
E2 — Explosion Resistant Enclosure up to 5" Flange
Conduit
Hub
E2 — Explosion Resistant Enclosure for 6" and Larger Flange
B-91
Immersion
Flanged Immersion Heaters
Terminal Enclosures
Third Party Specifications by Housing Style
Model Purpose
E1 General Purpose Generic
E4* Moisture Resistant
E2 Moisture Resistant/
E5
Flange
8"-12"
12"-18"
* WARNING: Addition of sparking devices such as a Thermostat to an E4 housing will annul hazardous area rating.
Note: Temps over
T3 (200°C) require
standoffs for third
party listing. Refer
to IECex & ATEX
certifs. for standoff
dimensions
Explosion Proof
Ex de IIB+H2 T1 to
T6, 540°C, 600°C
Note: Temps over
T4 (135°C) require
standoffs for third
party listing. Refer
to IECex & ATEX
certifs. for standoff
dimensions
Moisture Resistant/
Explosion Proof
Size
Ex de IIC T1 to T6
3"-8"
540°C, 600°C
ATEX IIC Labeling
Reference
CFP, CFP2, CFP4,
CFP8, CFP12,
CFP20
Refer to European
Catalog.
Agency (s)
Ratings General Duty Only General Duty Only General Duty Only General Duty Only
Generic
Agency (s)
Ratings Class I Div. 2,
Generic
Agency (s)
Ratings Class I, Div. 1
Generic
Agency (s)
Ratings II 2 G EEx de IIC T1 to
Designation(s)
NEMA 1, NEC
UL/CSAus
NEMA 4
UL / CSAus
Groups B, C, D
Groups E, F: 200°C
(T3)
Group G 165°C (T3B)
Class I Zone 2 AEx nA II
T1 to T6
CSAus CSA ATEX IECex
Groups B,C & D
Class II, Div. 1
Groups E, F & G
Class I Zone 1
AEx d IIB + H2 T1 to T6
North American
Canadian
Designation(s)
NEMA 1 IP32
CSA
NEMA 4
CSA
Class I Div. 2,
Groups B, C, D
Class II Division 2,
Groups E, F: 200°C
(T3)
Group G 165°C (T3B)
Class I Zone 2
Ex nA II T1 to T6
Class I, Div. 1
Groups B,C &D
Class II, Div. 1
Groups E, F & G
Class I Zone 1
Ex d IIB + H2 T1 to T6
European
Designation(s)
IP32
CE: Manufacturer’s
Declaration
IP66
CE: Manufacturer’s
Declaration
II 3 G Ex nA II T1 to T6 Ex nA II T1 to T6
I 2 G EEx d IIB+H2 T1
to T6
ITS
ATEX
T6, 540°C, 600°C
International
Designation(s)
CE: Manufacturer’s
Declaration
IP66
CE: Manufacturer’s
Declaration
Ex d IIB+H2 T1 to T6
IECex
Ex de IIC T1 to T6
540°C, 600°C
B-92
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