siemens SIRIUS Data sheet
Data sheet 3SK1111-1AW20
SIRIUS safety relay Basic unit Standard series Relay enabling circuits 3 NO
contacts plus Relay signaling circuit 1 NC contact Us = 110 - 240 V AC/DC 50/60
Hz screw terminal
product brand name
SIRIUS
product category
Safety relays
product designation
safety relays
design of the product
Relay enabling circuits
General technical data
protection class IP of the enclosure
IP20
touch protection against electrical shock
finger-safe
insulation voltage rated value
300 V
ambient temperature
● during storage
-40 ... +80 °C
● during operation
-25 ... +60 °C
air pressure according to SN 31205
90 ... 106 kPa
relative humidity during operation
10 ... 95 %
installation altitude at height above sea level maximum
4 000 m; Derating, see Product Notification 109792701
vibration resistance according to IEC 60068-2-6
5 ... 500 Hz: 0.75 mm
shock resistance
10g / 11 ms
surge voltage resistance rated value
4 000 V
EMC emitted interference
IEC 60947-5-1, Class A
installation environment regarding EMC
This product is suitable for Class A environments only. In household
environments, this device can cause unwanted radio interference. The user is
required to implement appropriate measures in this case.
overvoltage category
3
degree of pollution
3
reference code according to IEC 81346-2
F
power loss [W] maximum
2.5 W
number of sensor inputs 1-channel or 2-channel
1
design of the cascading
none
type of the safety-related wiring of the inputs
single-channel and two-channel
product feature cross-circuit-proof
Yes
Safety Integrity Level (SIL)
● according to IEC 62061
3
● according to IEC 61508
3
performance level (PL)
● according to ISO 13849-1
e
category according to EN ISO 13849-1
4
Safe failure fraction (SFF)
99 %
PFHD with high demand rate according to EN 62061
1.5E-9 1/h
PFDavg with low demand rate according to IEC 61508
1E-6
T1 value for proof test interval or service life according to
IEC 61508
20 a
hardware fault tolerance according to IEC 61508
1
3SK11111AW20
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10/20/2023
Subject to change without notice
© Copyright Siemens
safety device type according to IEC 61508-2
Type A
Inputs/ Outputs
number of outputs as contact-affected switching element
● as NC contact
— for signaling function instantaneous contact
1
● as NO contact
— safety-related instantaneous contact
3
— safety-related delayed switching
0
stop category according to EN 60204-1
0
design of input
● cascading input/functional switching
No
● feedback input
Yes
● start input
Yes
type of electrical connection plug-in socket
No
operating frequency maximum
360 1/h
switching capacity current
● of the NO contacts of the relay outputs
— at DC-13
— at 24 V
5 A
— at 115 V
0.2 A
— at 230 V
0.1 A
— at AC-15
— at 115 V
5 A
— at 230 V
5 A
● of the NC contacts of the relay outputs
— at DC-13
— at 24 V
1 A
— at 115 V
0.2 A
— at 230 V
0.1 A
— at AC-15
— at 115 V
1.5 A
— at 230 V
1.5 A
thermal current of the switching element with contacts
maximum
5 A
total current maximum
12 A
operational current at 17 V minimum
5 mA
mechanical service life (operating cycles) typical
10 000 000
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
design of the fuse link for short circuit protection of the NC
contacts of the relay outputs required
Diazed or Neozed fuses, operating class gL/gG: 6 A or MCB type A: 2 A or
MCB type B: 2 A or MCB type C: 1 A
wire length
● for total of all sensor circuits with Cu 1.5 mm² and 150
nF/km maximum
2 000 m
make time with automatic start
● typical
110 ms
● at DC maximum
130 ms
● at AC maximum
130 ms
make time with automatic start after power failure
● typical
110 ms
● maximum
130 ms
make time with monitored start
● maximum
15 ms
● typical
15 ms
backslide delay time after opening of the safety circuits
typical
10 ms
backslide delay time in the event of power failure
● typical
200 ms
● maximum
300 ms
recovery time after opening of the safety circuits typical
10 ms
recovery time after power failure typical
0.32 s
pulse duration
3SK11111AW20
Page 2/5
10/20/2023
Subject to change without notice
© Copyright Siemens
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