EX-SN-「」type（communication）

Conforming standards:
Explosion-proof machine qualified Code No. TC16896

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Features:

Used in explosion-proof areas such as petrochemical plants and heavy chemical plants

SN-「」SPD installed

Applications:

Used for information lines such as communication and control cables in explosion-proof areas

Public telephone line

ADSL lines

RS422 circuit, RS485 circuit

Transport circuit, measurement circuit, control circuit, etc.

Telemeter lines

Product type identification:

abbreviation	SPD type	Applications
01	SN-EN1	General public line/ADSL line (telemetry line)
02	SN-EN3	General public line/ADSL line (telemetry line)
03	SN-H2-H1	RS422 circuit
04	SN-H3-H2	RS485 circuit
05	SN-K2	Control circuit up to AC110V
06	SN-N1	Conveying circuit, measuring circuit, control circuit (for balanced circuit)
07	SN-NM
51	SN-E1a	4～20mA circuit（Maximum circuit voltage 12.5V）
52	SN-E1b	4～20mA circuit（Maximum circuit voltage 21.5V）
53	SN-E1c	4～20mA circuit（Maximum circuit voltage 29.0V）
54	SN-E1d	4～20mA circuit（Maximum circuit voltage 54.0V）
61	SN-H3a	4～20mA circuit（Maximum circuit voltage 12.5V）
62	SN-H3b	4～20mA circuit（Maximum circuit voltage 21.5V）
63	SN-H3c	4～20mA circuit（Maximum circuit voltage 29.0V）
64	SN-H3d	4～20mA circuit（Maximum circuit voltage 54.0V）