Safety relay

Part no.: 547950

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Series MSI-SR4B
Application E-Stop circuits
Optoelectronic protective devices
Position switches (mechanical contacts)
Solenoid switches (reed contacts, equivalent)
Transponder switches (OSSD outputs)
Functions Contactor monitoring (EDM)
Cross circuit monitoring
Start/restart interlock (RES)
Restart Automatic
SIL 3, IEC 61508
SILCL 3, IEC/EN 62061
Performance Level (PL) e, EN ISO 13849-1
MTTFd 73 years, EN ISO 13849-1
PFHD 2,1E-08 per hour
PFHD, nop = 4800 0.0000000014 per hour
PFHD, nop = 28800 0.0000000045 per hour
PFHD, nop = 86400 0.000000015 per hour
Mission time 20 years, EN ISO 13849-1
Category 4, EN ISO 13849-1
STOP category 0, IEC/EN 60204-1
B10d at DC13 (inductive load) 1,000,000 number of cycles
B10d at AC15 (inductive load) 1,400,000 number of cycles
Protective circuit Fuse on switching output, upstream
Switching frequency, max. 3600 switching cycles/h
Continuous current per current path, max. 3 A
Input current, max. 100 mA
External safeguarding for supply circuit 200 mA delay-action
Permissible input line resistance, max. 30 Ω
Supply voltage UB 24 V, AC/DC, -20 ... 20 %
Current consumption, max. Without external load
Power consumption, max. 3 W, For 24 V, plus output load
Number of safety-related switching outputs (OSSDs) 3 Piece(s)
Type Safety-related switching output OSSD
Voltage type AC/DC
Switching element Relay, NO
Switching element Relay, NO
Switching element Relay, NO
Number of outputs, safety-oriented, undelayed, contact-based 3 Piece(s)
Number of outputs, safety-oriented, delayed, contact-based 0 Piece(s)
Number of outputs, signaling function, undelayed, contact-based 1 Piece(s)
Max. thermal continuous current Ith, release current paths 6 A
Response time 10 ms
Pickup delay, automatic start 300 ms
Pickup delay, manual start 30 ms
Regression delay 10 ms
Test pulse acceptance, max. 1 ms
Time window for signal sequence monitoring 20 ms
Number of connections 1 Piece(s)
Function Connection to device
Type of connection Terminal
Type of terminal Screw terminal
No. of pins 16 -pin
Connection cross sections 0.2 to 2.5 mm²
Dimension (W x H x L) 22.5 mm x 99 mm x 114.1 mm
Housing material Plastic
Plastic housing PA 66
Electrical contact material Silver alloy
Net weight 170 g
Housing color Gray
Type of fastening Snap-on mounting
Mechanical life time 10,000,000 actuation cycles
Type of display LED
Number of LEDs 4 Piece(s)
Ambient temperature, operation 0 ... 55 °C
Ambient temperature, storage -25 ... 70 °C
Degree of protection IP 20 (terminals)
IP 40 (housing)
Protection class II
Certifications TÜV Süd
Customs tariff number 85364900
ECLASS 5.1.4 27371800
ECLASS 8.0 27371819
ECLASS 9.0 27371819
ECLASS 10.0 27371819
ECLASS 11.0 27371819
ECLASS 12.0 27371819
ECLASS 13.0 27371819
ETIM 5.0 EC001449
ETIM 6.0 EC001449
ETIM 7.0 EC001449
ETIM 8.0 EC001449
3D-CAD model - zip
EPLAN macro - edz
EC declaration of conformity - pdf
Certificate - TÜV Süd - pdf