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SR4B3B01S Safety Relay Basic Module

Available from stock
The safety relay monitors emergency stop switches, safety switches and AOPDs. In spite of its installation width spanning just 22,5 mm, it offers space for switching status displays and attaching an operating equipment label.

Electrical Data

Supply Voltage 20.4 ... 28.8 V DC
Supply Voltage 20.4 ... 26.4 V AC
Input wiring 1-, 2-channel
Response time (automatic start) 100 ms
Response time (monitored start) 15 ms
Fall time (emergency stop) < 32 ms
Temperature Range -25 ... 60 °C
Storage temperature -40 ... 85 °C
Number of Safety Outputs stop 0 3
Switching current safety output (250 V AC) 8 A
Number of auxiliary outputs 1
Switching current auxiliary output (24 V DC) 2 A

Mechanical Data

Housing Material Plastic
Degree of Protection IP20
Connection Screw Clamp (pluggable)
Clampable Wire Cross-Section 0.2 ... 2.5 mm²
DIN-Rail mounting 35 mm
Weight 318 g

Safety-relevant Data

Performance Level (EN ISO 13849-1), Stop 0 up to Cat. 4 PL e
Mission Time TM (EN ISO 13849-1) 20 a
Safety integrity level (EN 61508) Stop 0 up to SIL 3
Stop Category (EN 60204-1) 0
B10d Switching Cycles (mechanical) 20 000 000
B10d Switching Cycles (40 % load) 7 500 000
B10d Switching Cycles (60 % load) 2 500 000
B10d Switching Cycles (80 % load) 1 000 000
B10d Switching Cycles (100 % load) 400 000

Function

Cross-circuit detection optional
Start, monitored yes
Start, automatically yes
Contactor Monitoring yes
Input signal NC yes
Input signal OSSD yes

Standards and certificates

B_SYM_CE_01.pdf B_SYM_CE_01.pdf B_SYM_CE_01.pdf

Connection Table

B_ANS_TAB_19.pdf

Ctrl. Panel

68 = supply voltage indicator
71 = Channel 1
87 = Channel 2
89 = Internal operating voltage
47 = Cross wire monitoring

Dimensioned Picture

Dimensions specified in mm (1 mm = 0.03937")

Complementary Products

  • Safety Relay SR4E4D01S
  • Software
Operating instructions
System solution
Declarations of Conformity / Approvals
Product certificates
Product certificates
SR4B3B01S_TUEV_Certificate.pdf
Product Comparison