Siemens SIRIUS 3SK1 Manual page 205

Electrical service life of 3SK1 safety relays
Note
When using the devices to equip furnaces to DIN EN 50156-1, the load (utilization category)
listed below must not be exceeded.
Electrical service life ≥ 250000 operating cycles at:
Utilization category
AC-1, 240 V
AC-15, 240 V
DC-13, 24 V
Device versions
3SK1121-.AB40
3SK1111-.AB30
3SK1111-.AW20
3SK1211-.BB40
3SK1211-.BB00
3SK1211-.BW20
Utilization category
AC-1
AC-15
DC-13
DC-1
SIRIUS 3SK1 safety relays
Manual, 06/2018, A5E02526190021A/RS-AD/004
3SK111; 3SK1121; 3SK1211
1.5 A
0.2 A
2.0 A
Ue (V) Ie (A)
240 5
4
2
240 4
3
1
24 5
2
1
24 5
13.2 General technical data
B10 value
d
(operating cycles)
500000
860000
1300000
300000
850000
1100000
300000
2000000
7000000
Technical data
3SK1213
10.0 A
10.0 A
3.0 A
Electrical endurance
of safety-related outputs
(typical)
85000
140000
210000
50000
85000
120000
50000
230000
1100000
500000
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