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Siemens 3SK1121-1CB41

SIRIUS safety relay Basic unit Advanced series with time delay 0.05-3 s Relay enabling circuits 2 NO instantaneous 2 NO delayed Us = 24 V DC screw terminal

SiemensMFR # 3SK1121-1CB41SKU # CEY-8EF3B02F6E2B

product brand nameSIRIUS

product categorySafety relays

product designationsafety relays

design of the productRelay enabling circuits

product type designation3SK1

product lineAdvanced basic unit

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About This Product

SIRIUS safety relay Basic unit Advanced series with time delay 0.05-3 s Relay enabling circuits 2 NO instantaneous 2 NO delayed Us = 24 V DC screw terminal

Siemens 3SK1121-1CB41

Genuine, certified Siemens product
Fast sourcing through a worldwide supply network
Product selection and compatibility support from our technical team
Equivalent and alternative product suggestions
Quotation and lead time tailored to your request

Specifications

product brand nameSIRIUS

product categorySafety relays

product designationsafety relays

design of the productRelay enabling circuits

product type designation3SK1

product lineAdvanced basic unit

Product Function

product function parameterizablesensor floating / sensor non-floating, monitored start-up / automatic start, 1-channel / 2-channel sensor connection, cross-circuit detection, startup testing, antivalent sensors, 2-hand switches, time delay

automatic startYes

light barrier monitoringYes

protective door monitoringYes

magnetically operated switch monitoring NC-NOYes

magnetically operated switch monitoring NC-NCYes

laser scanner monitoringYes

light array monitoringYes

EMERGENCY OFF functionYes

monitored start-upYes

pressure-sensitive mat monitoringNo

product feature cross-circuit-proofYes

suitability for interaction press controlYes

suitability for operation device connector 3ZY12Yes

monitoring of floating sensorsYes

monitoring of non-floating sensorsYes

position switch monitoringYes

EMERGENCY-OFF circuit monitoringYes

opto-electronic protection device monitoringYes

magnetically operated switch monitoringYes

safety-related circuitsYes

General technical data

certificate of suitability UL approvalYes

product feature protective coating on printed-circuit boardNo

power loss [W] maximum2.5 W

insulation voltage rated value300 V

degree of pollution3

overvoltage category3

surge voltage resistance rated value4 000 V

protection class IP of the enclosureIP20

shock resistance10 g / 11 ms

vibration resistance according to IEC 60068-2-65 ... 500 Hz: 0.75 mm

operating frequency maximum360 1/h

reference code according to IEC 81346-2F

Substance Prohibitance (day/month/year)11/05/2012

SVHC substance nameLead CAS-No. 7439-92-1 Lead monoxide (lead oxide) CAS-No. 1317-36-8 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-10-5 Melamine CAS-No. 108-78-1 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1 4,4'-isopropylidenediphenol (Bisphenol A, BPA) CAS-No. 80-05-7

Net Weight0.246 kg

Ambient conditions

installation altitude at height above sea level maximum4 000 m

noteDerating, see Product Notification 109792701

during operation-25 ... +60 °C

during storage-40 ... +80 °C

relative humidity during operation10 ... 95 %

air pressure according to SN 31205900 ... 1 060 hPa

Electromagnetic compatibility

installation environment regarding EMCThis 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.

EMC emitted interferenceIEC 60947-5-1, Class A

Safety related data

product function suitable for safety functionYes

safe stateSafety outputs switched off

test wear-related service life necessaryYes

function test interval maximum1 a

diagnostics test interval by internal test function maximum600 s

stop category according to IEC 60204-10 / 1

IEC 62061

SIL Claim Limit (subsystem) according to EN 620613

according to IEC 62061SIL 3

at single-channel evaluation according to IEC 620611

at 2-channel evaluation according to IEC 620613

PFHD with high demand rate according to IEC 620610,0000000037

ISO 13849

category according to EN ISO 13849-14

according to ISO 13849-1PL e

at single-channel evaluation according to ISO 13849-1c

at 2-channel evaluation according to ISO 13849-1e

for delayed release circuit according to ISO 13849-1e

according to ISO 13849-14

at 2-channel evaluation according to ISO 13849-14

overdimensioning according to ISO 13849-2 necessaryNo

IEC 61508

according to IEC 615083

for delayed release circuit according to IEC 61508SIL3

at single-channel evaluation according to IEC 615081

at 2-channel evaluation according to IEC 615083

safety device type according to IEC 61508-2Type B

PFHD with high demand rate according to IEC 615080,0000000037

PFDavg with low demand rate according to IEC 615080.000007

Safe failure fraction (SFF)99 %

according to IEC 615081

at single-channel evaluation according to IEC 615080

at 2-channel evaluation according to IEC 615081

of service life according to IEC 6150820 a

for proof test interval or service life according to IEC 6150820 a

Electrical Safety

touch protection against electrical shockfinger-safe

Short-circuit protection

for short-circuit protection of the NO contacts of the relay outputs requiredgL/gG: 6A or circuit breaker type A: 3A or circuit breaker type B: 2A or circuit breaker type C: 1A

Inputs

cascading input/functional switchingYes

feedback inputYes

start inputYes

pulse duration of the sensor input minimum75 ms

number of sensor inputs 1-channel or 2-channel1

Outputs

— for signaling function instantaneous contact0

— safety-related instantaneous contact2

— safety-related delayed switching2

mechanical service life (operating cycles) typical10 000 000

thermal current of the switching element with contacts maximum5 A

at 24 V3 A

at 115 V0.2 A

at 230 V0.1 A

at 115 V3 A

at 230 V3 A

total current maximum12 A

operational current at 17 V minimum5 mA

Times

at DC maximum110 ms

typical6 500 ms

maximum6 500 ms

maximum110 ms

backslide delay time after opening of the safety circuits typical40 ms

typical30 ms

maximum40 ms

adjustable OFF-delay time after opening of the safety circuits0.05 ... 3 s

recovery time after opening of the safety circuits typical30 ms

recovery time after power failure typical6.5 s

of the ON pushbutton input minimum0.15 s

Control circuit/ Control

type of voltage of the control supply voltageDC

control supply voltage at DC rated value24 V

initial value0.8

full-scale value1.2

Installation/ mounting/ dimensions

mounting positionany

fastening methodscrew and snap-on mounting

height100 mm

width22.5 mm

depth121.6 mm

for grounded parts at the side5 mm

Connections/ Terminals

type of electrical connectionscrew terminal

with Cu 1.5 mm² and 150 nF/km per sensor circuit maximum4 000 m

solid1x (0.5 ... 2.5 mm²), 2x (1.0 ... 1.5 mm²)

finely stranded with core end processing1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)

for AWG cables solid1x (20 ... 14), 2x (18 ... 16)

for AWG cables stranded1x (20 ... 16), 2x (20 ... 16)

type of electrical connection plug-in socketNo

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Siemens 3SK1121-1CB41

About This Product

Siemens 3SK1121-1CB41

Specifications

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