SRB308IT-24VAC/DC
Archive
Item number:101158200
Product features
- Level 1: Reset without edge detection, Optional Automatic reset function, Short-circuit recognition, Level 2: / Opener (NC) Normally open contact (NO)
- Multifunctional safety relay module for superior diagnostics and visualisation
- Suitable for the signal processing of outputs with contact sensors
- Suitable for signal processing of outputs connected to potentials (AOPDs), e.g. safety light grids/curtains
- Suitable for the signal processing of outputs with contact sensors
- 3 safety contacts, STOP 0
- 2 + 6 Signalling outputs
Ordering data
Note (Delivery capacity)Not available!
Replacement article number101159511
Product type descriptionSRB308IT-24VAC/DC
Article number (order number)101158200
EAN (European Article Number)4250116201556
eCl@ss number, version 12.027-37-18-19
eCl@ss number, version 11.027-37-18-19
eCl@ss number, version 9.027-37-18-19
ETIM number, version 7.0EC001449
ETIM number, version 6.0EC001449
Approvals - Standards
CertificatescULus
General data
StandardsEN IEC 60204-1EN IEC 60947-1EN IEC 60947-5-1EN IEC 60947-5-3EN IEC 60947-5-5EN IEC 61508EN IEC 62061EN ISO 13849-1
Climatic stressEN 60068-2-78
Housing materialGlass-fibre reinforced thermoplastic, ventilated
Gross weight480g
General data - Features
Electronic FuseYes
Wire breakage detection Yes
Cross-circuit detectionYes
Removable TerminalsYes
Start inputYes
Feedback circuit
Yes
Automatic reset functionYes
Reset edge detectionYes
Earth connection detectionYes
Integral system diagnostics, statusYes
Number of auxiliary contacts2
Number of LEDs5
Number of normally closed (NC)2
Number of undelayed semi-conductor outputs with signaling function6
Number of safety contacts3
Number of signalling outputs6
Safety classification
StandardsEN IEC 60947-5-1EN IEC 61508
Mission time20Year(s)
Common Cause Failure (CCF), minimum65
Stop-Category0
Safety classification - Relay outputs
Performance Level, stop 0, up toe
Category, Stop 04
Diagnostic Coverage (DC) Level, Stop 0≥ 99%
PFH value, Stop 02.00 x 10⁻⁸/h
Safety Integrity Level (SIL), Stop 0, suitable for applications in3
Mechanical data
Mechanical lifetime, minimum10,000,000Operations
MountingSnaps onto standard DIN rail to EN 60715
Mechanical data - Connection technique
Terminal designationsIEC/EN 60947-1
Terminationrigid or flexibleScrew terminals M20 x 1.5
Cable section, minimum0.25 mm²
Cable section, maximum2.5 mm²
Tightening torque of Clips0.6Nm
Mechanical data - Dimensions
Width45mm
Height100mm
Depth121mm
Ambient conditions
IP Degree of protection of the enclosureIP40
IP Degree of protection of the installation spaceIP54
IP Degree of protection of clips or terminalsIP20
Ambient temperature-25 ... +45 °C
Storage and transport temperature-40 ... +85 °C
Resistance to vibrations10 ... 55 Hz, Amplitude 0.35 mm
Restistance to shock30 g / 11 ms
Ambient conditions - Insulation values
Rated impulse withstand voltage Uimp4kV
Overvoltage categoryIII
Degree of pollution2
Electrical data
Frequency range50Hz60Hz
Operating voltage24 VAC -15 % / +10 %
24 VDC -15 % / +20 %
24 VDC -15 % / +20 %
Ripple voltage10%
Rated operating voltage24VAC
Rated operating voltage24VDC
Operating current125mA
Rated AC voltage for controls, 50 Hz, minimum20.4VAC
Rated control voltage at AC 50 Hz, maximum26.4VAC
Rated AC voltage for controls, 60 Hz, minimum20.4VAC
Rated control voltage at AC 60 Hz, maximum26.4VAC
Rated AC voltage for controls at DC minimum20.4VDC
Rated control voltage at DC, maximum28.8VDC
Utilisation category AC-15230VAC
Utilisation category AC-151.5A
Utilisation category DC-1324VDC
Utilisation category DC-131.2A
Electrical power consumption3W
Electrical power consumption3VA
Contact resistance, maximum0.1Ω
Note (Contact resistance)in new state
Drop-out delay in case of "emergency stop", maximum15ms
Pull-in delay at automatic start, maximum, typically60ms
Pull-in delay at RESET, typically200ms
Material of the contacts, electricalAgSn0, Ag-Ni, self-cleaning, positive drive
Electrical data - Digital inputs
Conduction resistance, maximum40Ω
Electrical data - Electromagnetic compatibility (EMC)
EMC ratingEMC-Directive
Status indication
Indicated operating statesInternal operating voltage UiPosition relay K1Position relay K2Position relay K3
Other data
Note (applications)Emergency-Stop buttonGuard systemPull-wire emergency stop switchesSafety light curtain
Note
Note (General)Inductive loads (e.g. contactors, relays, etc.) are to be suppressed by means of a suitable circuit.
Wiring example
Note (Wiring diagram)"Start function / Reset button: The function "trailing edge" is programmed by means of the "AF" switch located underneath the housing cover (switch position = 1). The automatic start is programmed by bridging terminals X3/X5 and by switching the "AF" swit2 channel control shown for a guard-door monitor with two contacts, of which at least one contact has positive break, with external reset button (R) and feedback circuit (H2). (example without cross-wire monitoring)Connect potential p-type outputs of safety light grids/curtains to S12/S22. The devices must have the same reference potential.F1 = Hybrid fuseF2 = Fuse for signalling outputsFor 1-channel control, connect NC contact to S11/S12 and bridge S21/S22 and S31/S32For 2-channel control with cross-wire monitoring, connect the NC contact to S11/S12 and S31/S32 and bridge S21/S22Relay outputs: Suitable for 2 channel control, for increase in capacity or number of contacts by means of contactors or relays with positive-guided contacts.The control recognises cross-short, cable break and earth leakages in the monitoring circuit.The ISD tables (Intergral System Diagnostics) for analysis of the fault indications and their causes are shown in the appendix.The wiring diagram is shown with guard doors closed and in de-energised condition.
The details and data referred to have been carefully checked. Images may diverge from original. Further technical data can be found in the manual. Technical amendments and errors possible.
Generated on: 08/05/2026, 03:01