SRB301MA-24V
- 1 Signalling output
- Suitable for the signal processing of outputs with contact sensors
- Suitable for the signal processing of outputs with contact sensors
- 3 safety contacts, STOP 0
- Suitable for signal processing of outputs connected to potentials (AOPDs), e.g. safety light grids/curtains
Ordering data
| Replacement article number |
101215369 |
| Product type description |
SRB301MA-24V |
| Article number (order number) |
101212415 |
| EAN (European Article Number) |
4030661446561 |
| eCl@ss number, version 12.0 |
27-37-18-19 |
| eCl@ss number, version 11.0 |
27-37-18-19 |
| eCl@ss number, version 9.0 |
27-37-18-19 |
| ETIM number, version 7.0 |
EC001449 |
| ETIM number, version 6.0 |
EC001449 |
| Notice |
Discontinued product |
Approvals - Standards
| Certificates |
TÜV cULus |
General data
| Standards |
EN IEC 62061 EN ISO 13849-1 EN IEC 60947-5-1 EN IEC 60947-5-3 EN IEC 60947-5-5 EN IEC 61508 EN IEC 60204-1 EN IEC 60947-1 |
| Climatic stress |
EN 60068-2-78 |
| Housing material |
Glass-fibre reinforced thermoplastic, ventilated |
| Gross weight |
250 g |
General data - Features
| Electronic Fuse |
Yes |
| Wire breakage detection |
Yes |
| Cross-circuit detection |
Yes |
| Start input |
Yes |
| Feedback circuit |
Yes |
| Reset edge detection |
Yes |
| Earth connection detection |
Yes |
| Integral system diagnostics, status |
Yes |
| Number of auxiliary contacts |
1 |
| Number of LEDs |
4 |
| Number of normally closed (NC) |
2 |
| Number of safety contacts |
3 |
Safety classification
| Standards |
EN IEC 60947-5-1 EN IEC 61508 |
| Stop-Category |
0 |
Safety classification - Relay outputs
| Performance Level, stop 0, up to |
e |
| Category, Stop 0 |
4 |
| Diagnostic Coverage (DC) Level, Stop 0 |
≥ 99 % |
| PFH value, Stop 0 |
2.00 x 10⁻⁸ /h |
| Safety Integrity Level (SIL), Stop 0, suitable for applications in |
3 |
| Mission time |
20 Year(s) |
| Common Cause Failure (CCF), minimum |
65 |
Mechanical data
| Mechanical lifetime, minimum |
10,000,000 Operations |
| Mounting |
Snaps onto standard DIN rail to EN 60715 |
Mechanical data - Connection technique
| Terminal designations |
IEC/EN 60947-1 |
| Cable section, minimum |
0.25 mm² |
| Cable section, maximum |
2.5 mm² |
| Tightening torque of Clips |
0.6 Nm |
| Allowed type of cable |
solid single-wire flexible |
| Terminal (mechanical) |
Screw terminals |
Mechanical data - Dimensions
| Width |
22.5 mm |
| Height |
100 mm |
| Depth |
121 mm |
Ambient conditions
| Degree of protection of the enclosure |
IP40 |
| Degree of protection of the installation space |
IP54 |
| Degree of protection of clips or terminals |
IP20 |
| Ambient temperature |
-25 ... +60 °C |
| Storage and transport temperature |
-40 ... +85 °C |
| Resistance to vibrations |
10 ... 55 Hz, Amplitude 0.35 mm |
| Restistance to shock |
30 g / 11 ms |
Ambient conditions - Insulation values
| Rated impulse withstand voltage Uimp |
4 kV |
| Overvoltage category |
III |
| Degree of pollution |
2 |
Electrical data
| Frequency range |
50 Hz 60 Hz |
| Operating voltage |
24 VAC -15 % / +10 % |
| Ripple voltage |
10 % |
| Rated operating voltage |
24 VAC |
| Rated operating voltage |
24 VDC |
| 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 |
1.8 W |
| Electrical power consumption |
4.4 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 |
| Material of the contacts, electrical |
AgSn0, Ag-Ni, self-cleaning, positive drive |
Electrical data - Safe relay outputs
| Voltage, Utilisation category AC-15 |
230 VAC |
| Current, Utilisation category AC-15 |
6 A |
| Voltage, Utilisation category DC-13 |
24 VDC |
| Current, Utilisation category DC-13 |
6 A |
| Switching capacity, minimum |
10 VDC |
| Switching capacity, minimum |
10 mA |
| Switching capacity, maximum |
250 VAC |
| Switching capacity, maximum |
8 A |
Electrical data - Digital inputs
| Conduction resistance, maximum |
40 Ω |
Electrical data - Relay outputs (auxiliary contacts)
| Switching capacity, maximum |
24 VDC |
| Switching capacity, maximum |
2 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 |
Other data
| Note (applications) |
Safety sensor Guard system Emergency-Stop button Pull-wire emergency stop switches Safety 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) |
The wiring diagram is shown with guard doors closed and in de-energised condition. Monitoring 1 guard door(s), each with a magnetic safety sensor of the BNS range To secure a guard door up to PL e and Category 4 The feedback circuit monitors the position of the contactors KA and KB. Switch setting: The cross-wire short detection function (factory default) is programmed by means of the switch located underneath the front cover of the module: Pposition nQS (top): no cross-wire short protection, suitable for 1-channel applications and applications with outputs with potential in the control circuits. Position QS (bottom): cross-wire short protection, suitable for 2-channel applications without outputs with potential in the control circuits. For 1-channel control, connect NC contact to S11/S12 and bridge S12/S22 (QS-switch = nQS) Connect potential p-type outputs of safety light grids/curtains to S12/S22. The devices must have the same reference potential. QS-switch = nQS |
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Datasheet
Operating instructions and Declaration of conformity
TÜV certification
UL Certificate
SISTEMA-VDMA library
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Product picture (catalogue individual photo)
ID: ksrb3f30
| 714.1 kB | .jpg | 265.642 x 529.167 mm - 753 x 1500 px - 72 dpi
| 85.1 kB | .png | 74.083 x 147.461 mm - 210 x 418 px - 72 dpi
| 46.2 kB | .jpg | 62.089000000000006 x 123.47200000000001 mm - 176 x 350 px - 72 dpi
| 33.4 kB | .png | 74.083 x 74.083 mm - 210 x 210 px - 72 dpi
| 6.9 MB | .png | 169.333 x 337.312 mm - 2000 x 3984 px - 300 dpi
Wiring example
Wiring example
Wiring example
Symbol (technical standard)
103007672 SRB-E-301ST
- Plug-in screw terminals with coding
- STOP 0 Function
- 1 oder 2-channel control
- Start button / Auto-start
- 1 Auxiliary contact
- 3 safety contacts
| EU Declaration of Conformity |  |
| Original | K.A. Schmersal GmbH & Co. KG Möddinghofe 30 42279 Wuppertal Germany Internet: www.schmersal.com |
| Declaration: | We hereby certify that the hereafter described components both in their basic design and construction conform to the applicable European Directives. |
| Name of the component: | SRB301MA SRB301MA/CC |
| Description of the component: | Safety relay module for emergency stop circuits, guard door monitoring, magnetic safety switches and AOPD's |
| Relevant Directives: | Machinery Directive | 2006/42/EC |
| EMC-Directive | 2014/30/EU | |
| RoHS-Directive | 2011/65/EU |
| Applied standards: | EN ISO 13850:2015 EN ISO 13849-1:2015 EN ISO 13849-2:2012 EN 61508:2010 EN 62061:2005 + AC:2010 + A1:2013 + A2:2015 |
| Notified body for Type Examination: | TÜV Rheinland Industrie Service GmbH Am Grauen Stein, 51105 Köln ID n°: 0035 |
| EC-Type Examination Certificate: | 01/205/5085.02/22 |
| Person authorised for the compilation of the technical documentation: | Oliver Wacker Möddinghofe 30 42279 Wuppertal |
| Place and date of issue: | Wuppertal, March 21, 2022 |
 |
| Authorised signature Philip Schmersal Managing Director |
K.A. Schmersal GmbH & Co. KG, Möddinghofe 30, 42279 Wuppertal
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 at: 17/04/2026, 18:20
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