User's Manual Part 6

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 The T4030, 4N38A and 4N25A are not intended for mains rated isolation.
• Mains rated transformer: Arlec 45035 (suitable for PSTN lines) 600/600 only, 4kVrms
rated.
• HV rated transformer: Arlec 45065 (suitable for private lines) 600/600 or 600/150,
3.5kV rated.
• Transformer T4084: 2kVrms.
• Transformer T4030: no HV specification.
• Mains rated opto-isolators: CNY17G
CNW85
Refer to the M008-50 Service Manual for line keying connection diagrams.