Digital Electronic Modules
11-79
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Switching Capacity and Lifetime of the Contacts
With an external suppression circuit, the contacts will last longer than specified in
the following table:
The normally open and normally closed contacts of the relay vary in their length of
service life.
Table 11-21 Switching Capacity and Lifetime of the Contacts
Resistive Load
Voltage Current Operating
Cycles (typ.)
Normally Open
Contact
Operating
Cycles (typ.)
Normally Closed
Contact
For resistive load 24 VDC 5.0 A 0.1 million 0.15 million
4.0 A 0.2 million 0.175 million
2.0 A 0.45 million 0.3 million
0.5 A 1.4 million 1.1 million
0.1 A 1.5 million 1.5 million
48 VDC 2.0 A 0.15 million 0.11 million
1.0 A 0.3 million 0.2 million
0.5 A 0.6 million 0.6 million
0.1 A 0.8 million 0.6 million
48 VAC 2.0 A 0.45 million 0.35 million
60 VAC 2.0 A 0.45 million 0.35 million
120 VAC 5.0 A 0.1 million 0.1 million
3.0 A 0.2 million 0.2 million
2.0 A 0.4 million 0.3 million
1.0 A 0.8 million 0.6 million
0.5 A 1.5 million 1.0 million
230 VAC 5.0 A 0.1 million 0.1 million
3.0 A 0.2 million 0.2 million
2.0 A 0.4 million 0.3 million
1.0 A 0.8 million 0.6 million
0.5 A 1.5 million 1.0 million
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