Siemens SIMATIC ET 200S - Switching Capacity and Service Life of Contacts

Digital Electronic Modules
11-85
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Switching capacity and service life of contacts
An external protective circuit offers a higher service life that that given in the table
below:
The NO and NC contacts of the relay have a different service life.
Table 11-29 Switching c apacity and service life of contacts
Resistive load
Voltage Current Operating
cycles (typical)
NO contacts
Operating
cycles (typical)
NC contacts
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 V DC 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