Siemens SIRIUS 3SK1, Manual

Page: 216 / 262

Technical data
13.2 Basic units
3SK1 safety relays
216
Manual, 04/2013, A5E02526190021A/RS-AA/01
3SK1121-.CB.1 3SK1121-.CB.2 3SK1121-.CB.4
Switching capacity current of the
semiconductor outputs at DC-13 at
24 V
A —
Switching capacity current of the
NO contacts of the relay outputs
•
at DC-13
– at 24 V
A 3
– at 115 V
A 0.2
– at 230 V
A 0.1
•
at AC-15
– at 115 V
A 3
– at 230 V
A 3
Switching capacity current of the
NC contacts of the relay outputs
•
at DC-13
– at 24 V
A —
– at 115 V
A —
– at 230 V
A —
•
at AC-15
– at 115 V
A —
– at 230 V
A —
Thermal current of the contact-
affected switching element maximum
A 5
Total current maximum A 12
Mechanical operating cycles as
operating time typical
10 000 000
Max. permissible voltage for safe
isolation between electronic
evaluation device and enabling
circuit according to EN 60947-1
V —
Design of the fuse link for short-
circuit protection of the NO contacts
of the relay outputs required
gL/gG: 6A or circuit breaker type A: 3A or circuit breaker type B:
2A or circuit breaker type C: 1A
Cable length between sensor and
electronic evaluation device with
Cu 1.5 mm² and 150 nF/km
maximum
m 1 000