- 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 |