Safety relays - PSR-SCP- 24DC/SDC4/2X1/B

Safety relay for emergency stop, safety door, and magnetic switches, as well as light grid, up to SIL 3 or Cat. 4, PL e according to EN ISO 13849, 2 N/O contacts, TBUS interface, automatic or manual activation, plug-in screw connection terminal blocks


Product Details

Product type Safety relays
Application Emergency stop
Safety door
Light grid
Solenoid switch
Mechanical service life approx. 107 cycles
Relay type Electromechanical relay with force-guided contacts in accordance with IEC/EN 61810-3
Insulation characteristics
Overvoltage category III

Maximum power dissipation for nominal condition 1.68 W
Nominal operating mode 100% operating factor
Rated insulation voltage 250 V
Rated surge voltage/insulation 4 kV / Basic isolation, (safe isolation, reinforced insulation and 6 kV between input circuit and enabling current paths.)

Rated control circuit supply voltage US 24 V DC
Voltage range with reference to US 0.85 ... 1.1
Power consumption at US typ. 1.7 W
Rated control supply current IS typ. 70 mA
Voltage at input/start and feedback circuit approx. 24 V DC
Typical response time 20 ms (manual start)
150 ms (automatic start)
Typical release time 10 ms
Recovery time 1 s
Protective circuit Reverse polarity protection; Suppressor diode ()
Max. permissible overall conductor resistance 50 Ω (Input and start circuits at UN)

Contact type 2 enabling current paths
1 semiconductor signaling output
Contact material AgSnO2
Maximum switching voltage 250 V AC/DC
Minimum switching voltage 15 V AC/DC
Limiting continuous current 6 A (N/O contact)
100 mA (signal output)
Maximum inrush current 6 A
Inrush current, minimum 25 mA
Sq. Total current 72 A2 (ITH2 = I12 + I22)
Interrupting rating (ohmic load) max. 144 W (24 V DC, τ = 0 ms)
288 W (48 V DC, τ = 0 ms)
77 W (110 V DC, τ = 0 ms)
88 W (220 V DC, τ = 0 ms)
1500 VA (250 V AC, τ = 0 ms)
Maximum interrupting rating (inductive load) 48 W (24 V DC, τ = 40 ms)
40 W (48 V DC, τ = 40 ms)
35 W (110 V DC, τ = 40 ms)
33 W (220 V DC, τ = 40 ms)
Switching capacity min. 0.4 W
Switching capacity (360/h cycles) 6 A (24 V DC)
5 A (230 V (AC15))
Switching capacity (3600/h cycles) 3 A (24 V (DC13))
3 A (230 V (AC15))
Output fuse 10 A gL/gG NEOZED (N/O contact)
Miniature circuit breaker C6 (24 V / 20 A power supply unit)

Connection technology
pluggable yes
Conductor connection
Connection method Screw connection
Conductor cross section solid 0.2 mm² ... 2.5 mm²
Conductor cross-section AWG 24 ... 12
Screw thread M3

Width 22.5 mm
Height 99 mm
Depth 114.5 mm

Housing material Polyamide
Housing color yellow

Safety data
Stop category 0
Safety data: EN ISO 13849
Category 4 (Undelayed contacts)
Performance level (PL) e
Safety data: IEC 61508 - High demand
Designation The details apply assuming the following calculation basis:

dop: 365.25 days (assumption)
hop: 24 hours (assumption)
tcycle: 3600 seconds (assumption)
B10d for AC-15 6A: 300 000 (manufacturer's value)

Data only applies if the safety function is demanded at least once a year. Only applies if signal contact is left in position!
Safety Integrity Level (SIL) 3
SFFSingle-channel 99.48 %
SFFTwo-channel 99.82 %
Mean time to a dangerous failure (MTTFD) 450586 Years
Probability of a hazardous failure per hour (PFHD) 2.53 x 10-10
Diagnostic coverage (DC) 99 %
Proof test interval < 12 Months
Duration of use 240 Months
Safety data: IEC 61508 - Low demand
Safety Integrity Level (SIL) 3
SFFSingle-channel 99.48 %
SFFTwo-channel 90.34 %
Mean time to a dangerous failure (MTTFD) 11319 Years
Probability of a hazardous failure on demand (PFDAVG) 1.43 x 10-4
Diagnostic coverage (DC) 0 %
Proof test interval 40 Months
Duration of use 240 Months

Ambient conditions
Degree of protection IP20
Min. degree of protection of inst. location IP54
Ambient temperature (operation) -20 °C ... 55 °C
Ambient temperature (storage/transport) -40 °C ... 70 °C
Maximum altitude ≤ 2000 m (Above sea level)
Max. permissible humidity (storage/transport) 75 % (on average, 85% infrequently, non-condensing)
Max. permissible relative humidity (operation) 75 % (on average, 85% infrequently, non-condensing)

Air clearances and creepage distances between the power circuits
Standards/regulations EN 60664-1

Mounting type DIN rail mounting
Mounting position any

Item number 2981486
Packing unit 1 pc
Minimum order quantity 1 pc
Sales Key C18
Product Key DNA211
Catalog Page Page 231 (C-6-2019)
GTIN 4046356051682
Weight per Piece (including packing) 224.8 g
Weight per Piece (excluding packing) 224.8 g
Customs tariff number 85371098
Country of origin DE


ECLASS-9.0 27371819
ECLASS-10.0.1 27371819
ECLASS-11.0 27371819


ETIM 8.0 EC001449


UNSPSC 21.0 39122200


Approval ID: TR_TS_D_00573_c

UL Listed

Approval ID: FILE E 140324

cUL Listed

Approval ID: FILE E 140324

Functional Safety

Approval ID: 01/205/0660.03/22

Functional Safety

Approval ID: 968/EZ 369.05/22

cULus Listed

REACh SVHC Lead 7439-92-1
China RoHS Environmentally Friendly Use Period = 50 years
For information on hazardous substances, refer to the manufacturer’s declaration available under “Downloads”

Your advantages

Up to Cat. 4/PL e in accordance with ISO 13849-1, SIL 3 in accordance with IEC 62061, SIL 3 in accordance with IEC 61508
Modular system with TBUS extension
For emergency stop and safety door monitoring, plus evaluation of light grids
2 enabling current paths, 1 signaling current path
1- and 2-channel control