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Coding of Series 300 Hazardous Area Options

 
3
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3
1
4
1
1
3
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Range Code:
3
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  Enclosure Code
Classification:
3
- ExN IIC T4/T5/T6 TO BS6941:1988
when used with output switch 15 & 17
 
4

- EExd IIB T4/T5/T6 (Flameproof)
when used with output switch 33

 
7
- I.S. These switches are classified as simple apparatus.
 
Enclosure Material:
1
- Aluminium alloy with stoved enamel finish
 
4
- 316 Stainless steel. Self finish.
 
Vent Ring:
3
- Without vent ring
 
4
- With vent ring
 
Electrical Connection:
1
- M20 x 1.5
 
6
- 1/2" NPT INT (Note: via an approved adaptor for EExd enclosures)
  Output Switch (all SPDT)
Number of Switches:
1
- for ExN enclosures or I.S. circuits
 
3
- for EExd enclosures only
 
Rating of Switch(es):
3
- 250Vac 4A, 28Vdc 2A (Not for ExN)
 
4
- Gold contacts (Not for ExN)
125Vac 800mA, 28Vdc 800mA
 
5

-Environment free with gold contacts,
125Vac 800mA, 28Vdc 800mA

 
7
- Environment free encapsulated switch,
250Vac 4A, 28Vdc 2A
 
Process Options:
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