- 1 signal contact in series
- Suitable for applications up to Cat. 4 / PL e und up to SIL 3
- 1 or 2 channel signal evaluation
- Start / feedback circuit monitoring
- Optionally with short-circuit recognition
- 3 safety contacts, stop category 0
Ordering data
| Product type description | SRB-E-301MC20 | 
| Article number (order number) | 103026799 | 
| EAN (European Article Number) | 4030661517285 | 
General data
| Standards | EN 60947-5-1 EN ISO 13849-1 IEC 60204-1 IEC 61508 IEC 62061 | 
| Climatic stress | EN 60068-2-78 | 
| Enclosure material | Glass-fibre reinforced thermoplastic, ventilated | 
| Material of the contacts, electrical | Ag-Ni, self-cleaning, positive drive | 
| Gross weight | 175 g | 
General data - Features
| Stop-Category | 0 | 
| Electronic Fuse | Yes | 
| Wire breakage detection | Yes | 
| Short-circuit recognition | Yes | 
| Removable Terminals | Yes | 
| Start input | Yes | 
| Feedback circuit | Yes | 
| Automatic reset function | Yes | 
| Earth connection detection | Yes | 
| Integral System Diagnostics, status | Yes | 
| Number of auxiliary contacts | 1 | 
| Number of LEDs | 5 | 
| Number of openers | 2 | 
| Number of Safety contacts, STOP 0 | 3 | 
Safety appraisal
| Standards | EN ISO 13849-1 IEC 62061 IEC 61508 | 
Safety appraisal - Relay outputs
| Performance Level, up to | e | 
| Control category to EN13849 | 4 | 
| Diagnostic Coverage (DC) Level | >, 99 % | 
| PFH-value | 6.00 x 10⁻⁹ /h | 
| PFD value | 4.00 x 10⁻⁵ | 
| Safety Integrity Level (SIL), suitable for applications in | 3 | 
| Mission time | 20 Year(s) | 
| Common Cause Failure (CCF), minimum | 65 | 
Mechanical data
| Mechanical life, minimum | 10,000,000 Operations | 
| Mounting | Snaps onto standard DIN rails to IEC 60715 | 
Mechanical data - Connection technique
| Terminal Connector | Screw connection, plug-in rigid or flexible | 
| Terminal designations | IEC 60947-1 | 
| Cable section, minimum | 0.25 mm² | 
| Cable section, maximum | 2.5 mm² | 
| Tightening torque of Clips | 0.5 Nm | 
Mechanical data - Dimensions
| Width | 22.5 mm | 
| Height | 98 mm | 
| Depth | 115 mm | 
Ambient conditions
| Degree of protection of the enclosure | IP40 | 
| Degree of protection of the mounting space | IP54 | 
| Degree of protection of clips or terminals | IP20 | 
| Ambient temperature, minimum | -25 °C | 
| Ambient temperature, maximum | +60 °C | 
| Storage and transport temperature, minimum | -40 °C | 
| Storage and transport temperature, maximum | +85 °C | 
| Resistance to vibrations to EN 60068-2-6 | 10 ... 55 Hz, Amplitude 0.35 mm | 
| Restistance to shock | 30 g / 11 ms | 
Ambient conditions - Insulation value
| Rated impulse withstand voltage Uimp | 4 kV | 
| Overvoltage category | III | 
| Degree of pollution to IEC/EN 60664-1 | 2 | 
Electrical data
| Frequency range | 50 Hz 60 Hz | 
| Rated operating voltage | 24 VAC -15% / +10% 24 VDC -15% / +20%, residual ripple max. 10 % | 
| Rated AC voltage for controls, 50 Hz, minimum | 20.4 VAC | 
| Rated control voltage at AC 50 Hz, maximum | 26.4 VAC | 
| Rated AC voltage for controls, 60 Hz, minimum | 20.4 VAC | 
| Rated control voltage at AC 60 Hz, maximum | 26.4 VAC | 
| Rated AC voltage for controls at DC minimum | 20.4 VDC | 
| Rated control voltage at DC, maximum | 28.8 VDC | 
| Electrical power consumption | 3.4 W | 
| Electrical power consumption | 8.5 VA | 
| Contact resistance, maximum | 0.1 Ω | 
| Note (Contact resistance) | in new state | 
| Drop-out delay in case of power failure, typically | 80 ms | 
| Drop-out delay in case of emergency, typically | 20 ms | 
| Pull-in delay at automatic start, maximum, typically | 100 ms | 
| Pull-in delay at RESET, typically | 20 ms | 
| Switching frequency, maximum | 0.3 Hz | 
Electrical data - Safe relay outputs
| Voltage, Utilisation category AC15 | 230 VAC | 
| Current, Utilisation category AC-15 | 4 A | 
| Voltage, Utilisation category DC13 | 24 VDC | 
| Current, Utilisation category DC13 | 4 A | 
| Switching capacity, minimum | 10 VDC | 
| Switching capacity, minimum | 10 mA | 
| Switching capacity, maximum | 250 VAC | 
| Switching capacity, maximum | 6 A | 
Electrical data - Digital inputs
| Conduction resistance, maximum | 40 Ω | 
Electrical data - Relay outputs (auxiliary contacts)
| Switching capacity, maximum | 24 VDC | 
| Switching capacity, maximum | 1 A | 
Electrical data - Electromagnetic compatibility (EMC)
| EMC rating | EMC-Directive | 
Status indication
| Indicated operating states | Position relay K2 Position relay K1 Internal operating voltage Ui UB: Supply voltage on | 
Other data
| Note (applications) | Safety sensor Guard system hinged safety guard Emergency-Stop button Pull-wire emergency stop switches Safety light curtain Safety light barriers | 
 
                
 
                                         
                                         
                                         
                                         
                                         
                                         
                                 
                                 
                                 
                                 
                                
 
                   
                   
                  