Safety relay from Moeller
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Safety relay from Moeller
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 Moeller 118703 EATON ESR5-NZ-21-24VAC-DC two-hand relay 24VACDC
Two-hand safety relay for implementing the basic functions of protective door / two-hand function, two-channel operation, supply voltage 24VDC or 24VAC 50/60Hz, 2 enabling current paths (IEC/EN 60204 ...Lieske Part No.: 697418 Mfg Part No: 118703 Type: ESR5-NZ-21-24VAC-DC |
326,29 EUR
 ≈ £278.33 | ≈ $372.30
Delivery time from supplier's stock (ca.) 1 workdaysinfo_outline
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Moeller 153152 EATON ESR5 NOS 31-230VAC Safety, relays 230VACDC 1-channel
Safety relay for implementing the basic functions emergency stop / emergency stop / safety door, single-channel operation, supply voltage 230VAC 50/60Hz, 3 enabling current paths (IEC/EN 60204 stop ... Lieske Part No.: 294225 Mfg Part No: 153152 Type: ESR5-NOS-31-230VAC |
278,79 EUR
≈ £237.81 | ≈ $318.10
Delivery time on requestinfo_outline
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Moeller 168100 EATON SOL30X3-SAFETY-MC4-U (230V50HZ), fire switch f.3 strings 30A
Firefighter switch, protection class: IP65, standards and regulations: IEC/EN 60 947-3 Lieske Part No.: 758760 Mfg Part No: 168100 Type: SOL30X3-SAFETY-MC4-U |
1.157,65 EUR
≈ £987.48 | ≈ $1,320.88
Delivery time from supplier's stock (ca.) 1 workdaysinfo_outline
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Moeller 168101 EATON SOL30X3-SAFETY-MV-U (230V50HZ), fire switch f.3 strings 30A
Firefighter switch, protection class: IP65, standards and regulations: IEC/EN 60 947-3 Lieske Part No.: 668219 Mfg Part No: 168101 Type: SOL30X3-SAFETY-MV-U( |
1.107,05 EUR
≈ £944.31 | ≈ $1,263.14
Delivery time on requestinfo_outline
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Moeller 168102 EATON SOL30X4-SAFETY-MC4-U (230V50HZ) Feuerwehrsch
Firefighter switch, protection class: IP65, standards and regulations: IEC/EN 60 947-3 Lieske Part No.: 104194 Mfg Part No: 168102 Type: SOL30X4-SAFETY-MC4-U |
1.486,59 EUR
≈ £1,268.06 | ≈ $1,696.20
Delivery time on requestinfo_outline
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Moeller 168104 EATON SOL30X6-SAFETY-MC4-U (230V50HZ), fire switch f.6 strings 30A
Firefighter switch, protection class: IP65, standards and regulations: IEC/EN 60 947-3 Lieske Part No.: 791826 Mfg Part No: 168104 Type: SOL30X6-SAFETY-MC4-U |
2.130,45 EUR
≈ £1,817.27 | ≈ $2,430.84
Delivery time on requestinfo_outline
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Moeller 191796 MOE EATON ESR5-NO-31-UC safety relay for EMERGENCY STOP monitoring
Safety relay for emergency stop, safety doors and light curtains up to SILCL 3, Cat. 4, PL e, 1- or 2-channel operation, automatic or manual, monitored start, 3 enabling current paths, 1 signaling ... Lieske Part No.: 1596932 Mfg Part No: 191796 Type: ESR5-NO-31-UC |
471,88 EUR
≈ £402.51 | ≈ $538.42
Delivery time on requestinfo_outline
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Moeller 256790 EATON FAK-R/V/KC02/IY foot palm switches, emergency stop 0S2Ö
The Moeller 256790 is a complete device designed to meet the highest safety standards. The actuator features a latching function that can be unlocked by pulling. It is tamper-proof and complies with ... Lieske Part No.: 185866 Mfg Part No: 256790 Type: FAK-R/V/KC02/IY |
89,00 EUR
≈ £75.92 | ≈ $101.55
Delivery time from supplier's stock (ca.) 1 workdaysinfo_outline
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Moeller EP-401060 EATON ESR5-NO-41-24VDC Sicherheitsrelais NOT-AUS 24VDC
Einkanaliges Sicherheitsrelais, 4 Freigabe- + 1 Meldepfad, 24V DC, Steckbare Klemmebene, Starteingang, Rückmeldepfad, UL- und TÜV-Zertifikat Verkaufseinheit: 1 ST. Lieske Part No.: 1566890 Mfg Part No: EP-401060 Type: ESR5-NO-41-24VDC |
258,14 EUR
≈ £220.19 | ≈ $294.54
Delivery time on requestinfo_outline
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Moeller EP-401062 EATON ESR5-NO-31-24VDC Sicherheitsrelais NOT-AUS 24VDC
Ein-/Zweikanaliges Sicherheitsrelais, 3 Freigabe- + 1 Meldepfad, 24C DC, Steckbare Klemmebene, Starteingang, Rückmeldepfad, UL- und TÜV-Zertifikat Verkaufseinheit: 1 ST. Lieske Part No.: 642989 Mfg Part No: EP-401062 Type: ESR5-NO-31-24VDC |
331,45 EUR
≈ £282.73 | ≈ $378.18
Delivery time on requestinfo_outline
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Moeller EP-401063 EATON ESR5-NE-51-24VDC Kontakterweiterung 24VDC
Kontakterweiterung f. Sicherheitsrelais, 5 Freigabe- + 1 Meldepfad, 24C DC, Steckbare Klemmebene, Starteingang, Rückmeldepfad, UL- und TÜV-Zertifikat Verkaufseinheit: 1 ST. Lieske Part No.: 642990 Mfg Part No: EP-401063 Type: ESR5-NE-51-24VDC |
241,62 EUR
≈ £206.10 | ≈ $275.69
Delivery time on requestinfo_outline
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Standards and Directives for Safety Relays
The selection and use of safety switching devices is clearly governed by international standards and EU directives.
| ISO 13849-1 – Performance Level Defines requirements for safety-related parts of control systems (SRP/CS). The standard specifies 5 Performance Levels (PL a to PL e) and describes how to calculate them using category, MTTF, DC and CCF. The primary standard for machine builders in the EU. | IEC 62061 – Safety Integrity Level Standard for safety-related electrical control systems in industry. Assesses safety functions via Safety Integrity Level (SIL 1 to 3) based on PFH values (probability of dangerous failure per hour). Used alongside or as an alternative to ISO 13849. | EN 60947-5-1 – Low-Voltage Switchgear Product standard for electromechanical control devices. Governs technical requirements for control and signalling circuits, switching devices and positively guided contacts. Basis for CE marking of safety relays. | ||
| Machinery Directive 2006/42/EC EU directive establishing essential health and safety requirements for machinery. Safety relays are frequently part of the evidence for the declaration of conformity. From 2027 it will be replaced by the Machinery Regulation (EU) 2023/1230. | IEC 61810-3 – Positively Guided Contacts Defines requirements for electromechanical elementary relays with positively guided contacts. The positive guidance ensures that NC and NO contacts can never be closed simultaneously – the fundamental principle of relay safety. | EN 574 – Two-Hand Controls Safety standard specifically for two-hand controls. Defines three types (I, II, III) with different levels of protection. Type III C (simultaneous actuation, anti-defeat) is the highest level and is required for presses and stamping machines. | ||
Performance Level vs. Safety Integrity Level
Both metrics describe the ability of a safety function to prevent a dangerous failure – calculated according to different standards.
| PL (ISO 13849) | SIL (IEC 62061) | PFH Range (failures/h) | Typical Application |
| PL a | – | ≥ 10⁻⁵ to < 10⁻⁴ | Simple guards, low risk categories |
| PL b | SIL 1 | ≥ 10⁻⁶ to < 10⁻⁵ | Simple guards, minor injury risk |
| PL c | SIL 1 | ≥ 10⁻⁷ to < 10⁻⁶ | Safety gates, simple guard rails, medium risks |
| PL d | SIL 2 | ≥ 10⁻⁸ to < 10⁻⁷ | Emergency stop, interlocked safety gates, light curtains |
| PL e | SIL 3 | ≥ 10⁻⁹ to < 10⁻⁸ | Highest requirements: presses, robot cells, ATEX zones |
Single-Channel vs. Dual-Channel Evaluation
The number of channels is decisive for the achievable Performance Level and fault tolerance of the safety function.
► Single-Channel Evaluation (Category B, 1, 2)
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⚠ Dual-Channel Evaluation (Category 3, 4)
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Related Categories in the Shop
Further products from the Industrial Relays and Contactors range at Industry-Electronics.
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► Industrial Relays Standard switching relays and coupling relays for general switching tasks in automation and control engineering. |
► Industrial Timing Relays Timing relays for start-up delays, run-down functions and cyclic control tasks in automation technology. |
► Contactors Power contactors and motor protection switches for safe switching of drives, motors and loads up into the kW range. |
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► Isolating Switches / Measuring Relays Transducer relays, monitoring relays and isolating amplifiers for process automation and plant engineering. |
► Electronic Components Electronic control and regulation modules, voltage monitors and control relays for industrial control tasks. |
► All Industrial Relays & Contactors To the complete range of the Industrial Relays and Contactors category with all sub-sections. |
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⚠ Safety Relay Technical Support
Uncertain about which safety relay is right for your application? Our technical team advises on device selection, Performance Level, wiring concepts and standards compliance – personally and without detours. +49 (0)7666 / 88499-0 | sales@industry-electronics.com |