Safety device - PSR-MM25-1NO-2DO-24DC-SP

Safety relay module for sensor-free zero-speed monitoring for 3- and 1-phase motors up to SIL 3, Cat. 3, PL e, 2-channel evaluation of the residual voltage of AC, three-phase, and DC motors, plug-in Push-in terminal block, width: 12.5 mm



Product type Safety device
Application Zero-speed safety relay
Insulation characteristics
Overvoltage category III
Typ. starting time with Us < 1 s
Response time typ. 20 ms (at 50 Hz input frequency)
Delay time range 0.5 s ... 20 s ±1 % (K1, K2 can be parameterized)

Nominal operating mode 100% operating factor
Interfaces Without sensor
Rated control circuit supply voltage US 20.4 V DC ... 26.4 V DC
Rated control circuit supply voltage US 24 V DC -15 % / +10 %
Rated control supply current IS typ. 50 mA
Power consumption at US typ. 1.2 W
Inrush current 5.6 A (Δt = 400 µs at Us)
Filter time 1 ms (at A1 in the event of voltage dips at Us)
Protective circuit Surge protection; Suppressor diode
Protection against polarity reversal for rated control circuit supply voltage
Rated insulation voltage 250 V AC
Rated insulation voltage 250 V AC
400 V AC with isolation paths between (L1/L2/L3) and the remaining current paths
690 V AC (with isolation paths within L1/L2/L3)
Rated surge voltage/insulation Basic insulation 4 kV:
between all current paths and housing
Basic insulation 8 kV:
between L1 and L2
between L1 and L3
between L2 and L3
Safe isolation, reinforced insulation 6 kV:
between A1/A2 and 13/14
between MO/FO and 13/14
Safe isolation, reinforced insulation 8 kV:
between L1/L2/L3 and A1/A2
between L1/L2/L3 and MO/FO
between L1/L2/L3 and 13/14

Voltage input signal max. 690 V AC/DC (at L1/L2/L3)
Limit frequency max. 3 kHz (At voltages > 2 VRMS)
Current consumption max. 0.35 mA (at L1/L2/L3)

Relay: Enabling current path
Output description safety-related N/O contacts
Number of outputs 1 (undelayed)
Contact type 1 enabling current path
Contact material AgSnO2
Switching voltage min. 24 V AC/DC
max. 250 V AC/DC (Observe the load curve)
Switching capacity min. 72 mW
Inrush current min. 3 mA
max. 5 A
Limiting continuous current 5 A (observe derating)
Sq. Total current 25 A2 (observe derating)
Switching frequency max. 0.5 Hz
Mechanical service life 10x 106 cycles
Output fuse 5 A gL/gG
Number of outputs 2 (digital, PNP)
Voltage 23 V DC (US - 1 V)
Current max. 100 mA
Maximum inrush current 500 mA
Short-circuit protection Yes

Connection technology
pluggable yes
Conductor connection
Connection method Push-in connection
Conductor cross section solid 0.2 mm² ... 1.5 mm²
Conductor cross section flexible, with ferrule without plastic sleeve 0.25 mm² ... 1.5 mm² (only together with CRIMPFOX 6)
Conductor cross-section AWG 24 ... 16

Status display 4 x LED Bi-Colour

Width 12.5 mm
Height 116.6 mm
Depth 114.5 mm

Housing material Polyamide
Housing color yellow

Safety data
Stop category 0
Safety data: EN ISO 13849
Category 3
Performance level (PL) e (4 A DC13; 5 A AC15; 17520 switching cycles/year)
Safety data: IEC 61508 - High demand
Safety Integrity Level (SIL) 3 (4 A DC13; 5 A AC15; 17520 switching cycles/year)
Probability of a hazardous failure per hour (PFHD) 5.79 x 10-8 (4 A DC13; 5 A AC15; 17520 switching cycles/year)
Proof test interval 240 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 (observe derating)
Ambient temperature (storage/transport) -40 °C ... 85 °C
Maximum altitude max. 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)
Shock 15g
Vibration (operation) 10 Hz ... 150 Hz, 2g

Certificate CE-compliant

Air clearances and creepage distances between the power circuits
Standards/regulations DIN EN 50178

Mounting type DIN rail mounting
Assembly instructions See derating curve
Mounting position vertical or horizontal

Tuotenumero 2702356
Pakkausyksikkö 1 Kappaletta
Vähimmäistilausmäärä 1 Kappaletta
Tuoteavain DNA241
Tuotekoodi DNA241
Luettelosivu Sivu 243 (C-6-2019)
GTIN 4055626133218
Paino kappaletta kohti (sis. pakkauksen) 143,9 g
Paino kappaletta kohti (ilman pakkausta) 143,9 g
Tullitariffinumero 90328900
Alkuperämaa DE


ECLASS-9.0 27371811
ECLASS-10.0.1 27371811
ECLASS-11.0 27371811


ETIM 8.0 EC001448


UNSPSC 21.0 39122300

UL Listed

Approval ID: FILE E 140324

cUL Listed

Approval ID: FILE E 140324

Functional Safety

Approval ID: 01/205/5492.01/21

Functional Safety

Approval ID: 968/FSP 1226.02/21

cULus Listed

China RoHS Environmentally friendly use period: unlimited = EFUP-e
No hazardous substances above threshold values


Monitoring of 1 and 3-phase AC or DC motors
No additional sensors required
Adjustable delay time from 0.5 s ... 20 s
Adjustable switching threshold from 50 mV... 500 mV
1 enabling current path, 2 digital signal outputs
Low housing width of just 12.5 mm
Up to Cat. 3/PL e in accordance with EN ISO 13849-1, SIL 3 in accordance with IEC 62061