# Safety Relay, 24 VDC, 4PST-NO, DIN Rail, 6 A, Screw
**URL**: https://novapart.co/products/750105/safety-relay-24-vdc-4pst-no-din-rail-6-a-screw
**SKU**: 750105
**Manufacturer**: PILZ
**Category**: Switches & Relays || Relays || Safety Relays
**Price**: €339.2500
**Stock**: 50+
**Lead Time**: 78 days (indicative)
## Description
Coil Voltage:24VDC; Contact Configuration:4PST-NO; Product Range:PNOZ s5 Series; Relay Mounting:DIN Rail; Contact Current:6A; Relay Terminals:Screw; Contact Voltage AC Nom:240V; Contac
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Ip Rating | IP20, IP40, IP54 |
| Coil Voltage | 24VDC |
| Product Range | - |
| Relay Mounting | DIN Rail |
| Contact Current | 6A |
| Relay Terminals | Screw |
| Contact Material | Silver Copper Nickel |
| Contact Configuration | 4PST-NO |
| Contact Voltage Ac Nom | 240V |
| Contact Voltage Dc Nom | 24V |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2279986/)
E-STOP relays, safety gate monitors
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Unit features**
- Gertemerkmale Positive-guided relay outputs:
- 2 safety contacts (N/O), instantaneous
- 2 safety contacts (N/O), delay-on de-energisation
- 1 semiconductor output
- Connection options for:
- E-STOP pushbutton
- Safety gate limit switch
- See order reference for unit types
## **Unit description**
Bestimmung/Gerätebeschreibung NOT-AUS, Schutzt, Lichtschr_PNOZThe safety relay meets the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1 and may be used in applications with
- E-STOP pushbuttons
- Safety gates
- Light beam devices
- Reset button
- Light barriers
][Bildunterschrift_NOT_Sch.tuer_LichtSafety relay for monitoring E-STOP pushbuttons, safety gates and light beam devices
- PSEN
- A connector can be used to connect 1 PNOZsigma contact expander module
## **Approvals**
- Delay-on de-energisation selectable
- Operating modes and delay times can be selected via rotary switches
**==> picture [231 x 128] intentionally omitted <==**
**----- Start of picture text -----**
PNOZ s5
can be selected via rotary switches
LED indicator for:
– Supply voltage
–
Input status, channel 1
–
Input status, channel 2
– Switch status channel 1/2
– Reset circuit
– Error
Plug-in connection terminals (either
spring-loaded terminal or screw
terminal)
**----- End of picture text -----**
## **Safety features**
][Sicherheitseigenschaften Schaltgerät_allgemeiner TeilThe relay meets the following safety requirements:
- The circuit is redundant with built-in self-monitoring.
- The safety function remains effective in the case of a component failure.
- The correct opening and closing of the safety function relays is tested automatically in each on-off cycle.
- Sicherheitseigenschaften Zusatz - Sicherung DC_PNOZ The unit has an electronic fuse.
## **Block diagram**
**==> picture [3 x 3] intentionally omitted <==**
**----- Start of picture text -----**
B l o c kshatbild
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*only with UB = 48 – 240 V AC/DC
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Function description**
- ][Funktionen_einkanalig Single-channel operation: no redundancy in the input circuit, earth faults in the reset and input circuit are detected.
- ][Funktionen_zweikanalig_ohne_quer Dual-channel operation without detection of shorts across contacts: redundant input circuit, detects
- earth faults in the reset and input circuit,
- short circuits in the input circuit and, with a monitored reset, in the reset circuit too.
- ][Funktionen_zweikanalig_mit_quer_ber Dual-channel operation with detection of shorts across contacts: redundant input circuit, detects
- earth faults in the reset and input circuit,
- short circuits in the input circuit and, with a monitored reset, in the reset circuit too,
- shorts between contacts in the input circuit.
- ][Funktionen_autoStart Automatic start: Unit is active once the input circuit has been closed.
- ][Funktionen_manuStart Manual reset: Unit is active once the input circuit is closed and then the reset circuit is closed.
- ][Funktionen_berStart_fall_Flanke Monitored reset with falling edge: Unit is active once
- the input circuit is closed and then the reset circuit is closed and opened again.
- the reset circuit is closed and then opened again once the input circuit is closed.
- ][Funktionen_berStart_steig_Flanke Monitored reset with rising edge: Unit is active once the input circuit is closed and once the reset circuit is closed after the waiting period has elapsed (see technical details).
- ][Funktionen_Start_Anlauftest Reset with start-up test: The unit checks whether safety gates that are closed are opened and then closed again when supply voltage is applied.
- Funktionsbeschreibung Ability to increase the number of contacts available on the
- instantaneous safety contacts by using connectors to link to a PNOZsigma contact expansion module
- delayed/instantaneous safety contacts by connecting contact expansion modules or external contactors
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Timing diagram**
**==> picture [3 x 3] intentionally omitted <==**
**----- Start of picture text -----**
rml Af Zeitdau o nb PNOs12S _ ][g
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## **Key**
- Power: Supply voltage
- Reset/Start: Reset circuit S12-S34
- Input: Input circuits S11-S12, S21S22
- Output safe: Safety contacts 13-14, 23-24
- Out semi: Semiconductor outputY32
- : Manual reset
- : Monitored reset with rising edge
- : Monitored reset with falling edge
- : Reset with start-up test
- a: Input circuit closes before reset circuit
- b: Reset circuit closes before input circuit
- t1: Switch-on delay
- t2: Delay-on de-energisation
- t3: Waiting period
- t4: Waiting period reset circuit was closed
- t5: Delay time
- t6: Minimum time safety gates open
- : Automatic reset
## **Wiring**
][Verdrahtung_Si_unverz_verzPlease note:
- Information given in the “Technical details” must be followed.
- Outputs 13-14, 23-24 are instantaneous safety contacts, outputs 3738, 47-48 are delay-on de-energisation safety contacts.
- To prevent contact welding, a fuse should be connected before the output contacts (see technical details).
- Calculation of the max. cable runs lmax in the input circuit:
Rlmax = max. overall cable resistance (see technical details) Rl / km = cable resistance/km
- Use copper wire that can withstand 60/75 °C.
- Sufficient fuse protection must be provided on all output contacts with capacitive and inductive loads.
- ][Verdrahtung_Zusatz_AC With UB 48 – 240 VAC/DC: Connect S21 to the protective earth system
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
## E-STOP relays, safety gate monitors
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Preparing for operation**
- Supply voltage
**==> picture [334 x 8] intentionally omitted <==**
**----- Start of picture text -----**
Supply voltage AC DC
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## Input circuit
**==> picture [370 x 349] intentionally omitted <==**
**----- Start of picture text -----**
Input circuit Single-channel Dual-channel
E-STOP pr------=-5 CSI
without detection of shorts across con- $11 I
tacts $12
$22
I |C ;
E-STOP
with detection of shorts across contacts
|
Safety gate
@ ty
without detection of shorts across con-
tacts panna nana L l. Est
$11 1
I $12
i
| $22 i
i!
Safety gate
with detection of shorts across contacts
I
Light beam device or safety switch with
detection of shorts across contacts via 1
ESPE 1
(only when UB = 24 VDC) A2
**----- End of picture text -----**
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## Reset circuit/feedback loop
|Reset circuit/feedback loop|Reset circuit||Feedback circuit|
|---|---|---|---|
|Automatic reset|rar
I
$12||p----------
I|
||i
!
1
loo||13 (23,93,97,47)
|
14 (24,34,38,48)|
|Manual/monitored reset|||prtctttn|
- Semiconductor output
|UB24 VDC|UB48 – 240 VAC/DC|
|---|---|
|*Connect together the 0V connections on all the external power
supplies
~~a~~
|
*
!
!
\
Y32 ~~0———~~ PLC Input
]
|
|
Ipod|ponnnnn===5
!
|
Y3~~29—— ~~PLC Input
I
!
$21 ~~0—— ~~Gnd
|
||
## Key
S1/S2 E-STOP/safety gate switch S3 Reset button Switch operated Gate open Gate closed
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Terminal configuration**
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K nlem bu g
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## **Installation**
## **Dimensions**
> ][Montage_PNOZsigma **Install base unit without contact ex-** Abmessungen*with spring-loaded terminals
## ][Montage_PNOZsigma **Install base unit without contact expander module:**
**==> picture [136 x 151] intentionally omitted <==**
**----- Start of picture text -----**
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**----- End of picture text -----**
- Ensure that the plug terminator is inserted at the side of the unit.
## **Connect base unit and PNOZsigma contact expander module:**
- Remove the plug terminator at the side of the base unit and at the contact expander module.
- Connect the base unit and the contact expander module to the supplied connector before mounting the units to the DIN rail.
## **Installation in control cabinet**
- The safety relay should be installed in a control cabinet with a protection type of at least IP54.
- Use the notch on the rear of the unit to attach it to a DIN rail (35 mm).
- When installed vertically: Secure the unit by using a fixing element (e.g. retaining brakket or end angle).
- Push the unit upwards or downwards before lifting it from the DIN rail.
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Notice**
][Wichtig_PDBThis data sheet is only intended for use during configuration. Please refer to the operating manual for installation and operation.
## **Service life graph**
Lebensdauerkurve_Relais_Text vor KurveThe service life graphs indicate the number of cycles from which failures due to wear must be expected. The wear is mainly caused by the electrical load; the mechanical load is negligible.
**==> picture [2 x 3] intentionally omitted <==**
**----- Start of picture text -----**
Lkv e bnsda ur
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> Lebensdauerkurve_Relais_Text nach Kurve_SIS Bsp **Example**
- Inductive load: 0,2 A
- Utilisation category: AC15
- Contact service life: 1,000,000 cycles
Provided the application requires fewer than 1,000,000 cycles, the PFH value (see technical details) can be used in the calculation.
To increase the service life, sufficient spark suppression must be provided on all output contacts. With capacitive loads, any power surges that occur must be noted. With contactors, use freewheel diodes for spark suppression.
## **Technical details**
**Electrical data** Supply voltage Supply voltage UB DC **24 V** Supply voltage UB AC/DC **48 - 240 V** Voltage tolerance **-15 %/+10 %** Power consumption at UB AC **8.0 VA** No. 750135, 751135 Power consumption at UB DC **4.0 W** Frequency range AC **50 - 60 Hz** Residual ripple DC **160 %** No. 750135, 751135 **20 %** No. 750105, 751105, 751185 Voltage and current at Input circuit DC: **24.0 V 40.0 mA** Reset circuit DC: **24.0 V 40.0 mA** Feedback loop DC: **24.0 V 40.0 mA**
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Electrical data**
Number of output contacts Safety contacts (S) instantaneous: **2** Safety contacts (N/O), delayed: **2** Utilisation category in accordance with **EN 60947-4-1** Safety contacts: AC1 at **240 V** Imin:
Imin: **0.01 A** , Imax: **6.0 A** Pmax: **1500 VA** Imin: **0.01 A** , Imax: **6.0 A** Pmax: **150 W** Imin: **0.01 A** , Imax: **6.0 A** Pmax: **1500 VA** Imin: **0.01 A** , Imax: **6.0 A** Pmax: **150 W**
Safety contacts: DC1 at **24 V**
Safety contacts, delayed: AC1 at **240 V**
Safety contacts, delayed: DC1 at **24 V**
Utilisation category in accordance with **EN 60947-5-1** Safety contacts: AC15 at **230 V** Imax: **3.0 A** Safety contacts: DC13 at **24 V** (6 cycles/min) Imax: **4.0 A** Safety contacts, delayed: AC15 at **230 V** Imax: **3.0 A** Safety contacts, delayed: DC13 at **24 V** (6 cycles/min) Imax: **4.0 A** Contact material **AgCuNi + 0.2 µm Au** External contact fuse protection (IK = 1 kA) to **EN 60947-5-1** Blow-out fuse, quick Safety contacts: **6 A** Safety contacts, delayed: **6 A** Blow-out fuse, slow Safety contacts: **4 A** Safety contacts, delayed: **4 A** Circuit breaker 24 VAC/DC, characteristic B/C Safety contacts: **4 A** Safety contacts, delayed: **4 A** Semiconductor outputs (short circuit proof) **24.0 V** DC, **20 mA** Max. overall cable resistance Rlmax input circuits, reset circuits single-channel at UB DC **30 Ohm** single-channel at UB AC **30 Ohm** No. 750135, 751135 dual-channel without detect. of shorts across contacts at UB DC **30 Ohm** dual-channel without detect. of shorts across contacts at UB AC **30 Ohm** No. 750135, 751135 dual-channel with detect. of shorts across contacts at UB DC **30 Ohm** dual-channel with detect. of shorts across contacts at UB AC **30 Ohm** No. 750135, 751135 Min. input resistance when switching on **110 Ohm Safety-related characteristic data** PL in accordance with **EN ISO 13849-1: 2006** Safety contacts, instantaneous **PL e** ( **Cat. 4** ) Safety contacts, delayed **PL e** ( **Cat. 4** ) Category in accordance with **EN 954-1** Safety contacts, instantaneous **Cat. 4** Safety contacts, delayed **Cat. 4** SIL CL in accordance with **EN IEC 62061** Safety contacts, instantaneous **SIL CL 3** Safety contacts, delayed **SIL CL 3** PFH in accordance with **EN IEC 62061** Safety contacts, instantaneous **2.31E-09** Safety contacts, delayed **2.34E-09** SIL in accordance with **IEC 61511** Safety contacts, instantaneous **SIL 3** Safety contacts, delayed **SIL 3**
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Safety-related characteristic data**
PFD in accordance with **IEC 61511** Safety contacts, instantaneous **2.03E-06** Safety contacts, delayed **2.75E-05** TM [year] in accordance with **EN ISO 13849-1: 2006 20 Times** Switch-on delay with automatic reset typ. **180 ms** with automatic reset max. **400 ms** with automatic reset after power on typ. **1,430 ms** with automatic reset after power on max. **2,000 ms** with manual reset typ. **45 ms** with manual reset max. **85 ms** on monitored reset with rising edge typ. **45 ms** on monitored reset with rising edge max. **130 ms** on monitored reset with falling edge typ. **60 ms** on monitored reset with falling edge max. **150 ms** Delay-on de-energisation with E-STOP typ. **15 ms** with E-STOP max. **20 ms** with power failure typ. **75 ms** with power failure max. **110 ms** Recovery time at max. switching frequency 1/s after E-STOP **150 ms +tv** after power failure **200 ms** Delay time tV: selectable **0,00 s** ; **0,10 s** ; **0,20 s** ; **0,30 s** ; **0,40 s** ; **0,50 s** ; **0,60 s** ; **0,70 s** ; **0,80 s** ; **1,00 s** ; **1,50 s** ; **2,00 s** ; **2,50 s** ; **3,00 s** ; **3,50 s** ; **4,00 s** ; **5,00 s** ; **6,00 s** ; **7,00 s** ; **8,00 s** ; **10,00 s** ; **12,00 s** ; **14,00 s** ; **15,00 s** ; **16,00 s** ; **20,00 s** ; **25,00 s** ; **30,00 s** ; **35,00 s** ; **40,00 s** ; **50,00 s** ; **60,00 s** ; **70,00 s** ; **80,00 s** ; **90,00 s** ; **100,00 s** ; **120,00 s** ; **140,00 s** ; **150,00 s** ; **160,00 s** ; **180,00 s** ; **200,00 s** ; **210,00 s** ; **240,00 s** ; **300,00 s** Repetition accuracy **+/-1 % + +/-20 ms** Repetition accuracy in the case of a fault **+/-15 % + +/-20 ms** Time accuracy **+/-1 % + +/-20 ms** Waiting period with a monitored reset with rising edge **150 ms** with falling edge **240 ms** Min. start pulse duration with a monitored reset with rising edge **30 ms** with falling edge **70 ms** Simultaneity, channel 1 and 2 ∞ Supply interruption before de-energisation **20 ms Environmental data** EMC **EN 60947-5-1** , **EN 61000-6-2** , **EN 61000-6-4** Vibration to **EN 60068-2-6** Frequency **10.0 - 55.0 Hz** Amplitude **0.35 mm** Climatic suitability **EN 60068-2-78** Airgap creepage in accordance with **EN 60947-1** Pollution degree **2** Overvoltage category **III / II** Rated insulation voltage **250 V** Rated impulse withstand voltage **4.00 kV** Ambient temperature **-10 - 55 °C** Storage temperature **-40 - 85 °C**
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
## **Environmental data**
Protection type Mounting (e.g. cabinet) **IP54** Housing **IP40** Terminals **IP20 Mechanical data** Housing material Housing **PC** Front **PC** Cross section of external conductors with screw terminals 1 core flexible **0.25 - 2.50 mm² , 24 - 12 AWG** No. 750105, 750135 2 core, same cross section, flexible: with crimp connectors, without insulating sleeve **0.25 - 1.00 mm² , 24 - 16 AWG** No. 750105, 750135 without crimp connectors or with TWIN crimp connectors **0.20 - 1.50 mm² , 24 - 16 AWG** No. 750105, 750135 Torque setting with screw terminals **0.50 Nm** No. 750105, 750135 Cross section of external conductors with spring-loaded termi- **0.20 - 2.50 mm² , 24 - 12 AWG** No. 751105, 751135, 751185 nals: Flexible with/without crimp connectors Spring-loaded terminals: Terminal points per connection **2** No. 751105, 751135, 751185 Stripping length **9 mm** No. 751105, 751135, 751185 Dimensions Height **100.0 mm** No. 751105, 751135, 751185 **98.0 mm** No. 750105, 750135 Width **22.5 mm** Depth **120.0 mm** Weight **235 g** No. 750105, 751105, 751185 Technische Daten_Satz No. **260 g** No. 750135, 751135
## No. stands for order number.
Si-Kennzahlen_Zusatz_Relais_Lebensdauer_PDBIt is essential to consider the relay's service life graphs. The relay outputs' safety-related characteristic data is only valid if the values in the service life graphs are met.
The PFH value depends on the switching frequency and the load on the relay output.
If the service life graphs are not accessible, the stated PFH value can be
used irrespective of the switching frequency and the load, as the PFH value already considers the relay's B10d value as well as the failure rates of the other components.
All the units used within a safety function must be considered when calculating the safety characteristic data.
## Si_Kennzahlen_Erläuterung_2 **INFORMATION**
A safety function's SIL/PL values are **not** identical to the SIL/PL values of the units that are used and may be different. We recommend that you use the PAScal software tool to calculate the safety function's SIL/PL values.
The standards current on **2009-12** apply.
## **Conventional thermal current while loading several contacts**
|Number of contacts|Ithper contact at UB DC|Ith at UB AC|
|---|---|---|
|1|**6.00 A**|**6.00 A**No. 750135,751135|
|2|**6.00 A**|**6.00 A**No. 750135,751135|
|3|**6.00 A**|**6.00 A**No. 750135,751135|
|4|**6.00 A**|**6.00 A**No. 750135,751135|
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
E-STOP relays, safety gate monitors
**==> picture [72 x 42] intentionally omitted <==**
## **Up to PL e of EN ISO 13849-1** PNOZ s5
|**Order reference**|||||
|---|---|---|---|---|
||||||
|**Type**|**Features**||**Terminals**|**Order no.**|
|PNOZ s5||24 VDC|With screw terminals|750 105|
|PNOZ s5 C||24 VDC|With spring-loaded terminals|751 105|
|PNOZ s5 C||24 VDC|With spring-loaded terminals|751 185|
|(coated version)|||||
|PNOZ s5|48 – 240 VAC|48 – 240 VDC|With screw terminals|750 135|
|PNOZ s5 C|48 – 240 VAC|48 – 240 VDC|With spring-loaded terminals|751 135|
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
1001972-EN-04-2012-05
## Links
- [View this product on Novapart](https://novapart.co/products/750105/safety-relay-24-vdc-4pst-no-din-rail-6-a-screw)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/pilz/750105/relay-safety-4pst-no-240vac-6a/dp/2279986)
---
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