Safety relay from eaton

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Safety relay from Eaton

Eaton 118703 ESR5-NZ-21-24VAC-DC two-hand relay 24 V AC/DC 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

313,11 EUR 326,29 EUR

≈ £264.58 | ≈ $350.06

Delivery time from supplier's stock (ca.) 2 workdays

Eaton 153152 ESR5-NOS-31-230VAC safety relay 230 VAC/DC 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

267,53 EUR 278,79 EUR

≈ £226.06 | ≈ $299.10

Made to order · Delivery time approx. 20 workdays

Eaton 168100 SOL30X3-SAFETY-MC4-U(230V50HZ) fire department switch for 3 strings 30 A 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(230V50HZ)

1.110,80 EUR 1.154,59 EUR

≈ £938.63 | ≈ $1,241.87

Made to order · Delivery time approx. 20 workdays

Eaton 168101 SOL30X3-SAFETY-MV-U(230V50HZ) fire alarm switch for 3 strings 30 A 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(230V50HZ)

1.062,25 EUR 1.103,99 EUR

≈ £897.60 | ≈ $1,187.60

Made to order · Delivery time approx. 20 workdays

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(230V50HZ)

1.426,34 EUR 1.482,51 EUR

≈ £1,205.26 | ≈ $1,594.65

Made to order · Delivery time approx. 20 workdays

Eaton 168104 SOL30X6-SAFETY-MC4-U(230V50HZ) fire department switch for 6 strings 30 A 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(230V50HZ)

2.044,36 EUR 2.124,33 EUR

≈ £1,727.48 | ≈ $2,285.59

Delivery time from supplier's stock (ca.) 5 workdays

EATON ESR5-NO-31-UC safety relay for emergency stop monitoring 191796 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

452,82 EUR 471,88 EUR

≈ £382.63 | ≈ $506.25

Made to order · Delivery time approx. 20 workdays

Eaton 256790 FAK-R/V/KC02/IY foot coarse pushbutton 0S2Ö emergency stop 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

≈ £75.21 | ≈ $99.50

Delivery time from supplier's stock (ca.) 3 workdays

Eaton EP-401060 ESR5-NO-41-24VDC safety relay NOT-AUS 24 V DC Einkanaliges Sicherheitsrelais, 4 Freigabe- + 1 Meldepfad, 24 V DC, abnehmbare Klemmen, Starteingang, Rückführkreis, Zulassung gemäß UL, Zulassung für TÜV

Lieske Part No.: 1566890
Mfg Part No: EP-401060
Type: ESR5-NO-41-24VDC

247,71 EUR 258,14 EUR

≈ £209.31 | ≈ $276.94

Made to order · Delivery time approx. 20 workdays

Eaton EP-401061 ESR5-NO-21-24VDC safety relay NOT-AUS 24 V DC Ein-/Zweikanaliges Sicherheitsrelais, 2 Freigabe- + 1 Meldepfad, 24 V DC, abnehmbare Klemmen, Starteingang, Rückführkreis, Zulassung gemäß UL, Zulassung für TÜV

Lieske Part No.: 840995
Mfg Part No: EP-401061
Type: ESR5-NO-21-24VDC

272,49 EUR 283,96 EUR

≈ £230.25 | ≈ $304.64

Delivery time from supplier's stock (ca.) 5 workdays

Eaton EP-401062 ESR5-NO-31-24VDC safety relay NOT-AUS 24 V DC Ein-/Zweikanaliges Sicherheitsrelais, 3 Freigabe- + 1 Meldepfad, 24 V DC, abnehmbare Klemmen, Starteingang, Rückführkreis, Zulassung gemäß UL, Zulassung für TÜV

Lieske Part No.: 642989
Mfg Part No: EP-401062
Type: ESR5-NO-31-24VDC

318,06 EUR 331,45 EUR

≈ £268.76 | ≈ $355.59

Delivery time from supplier's stock (ca.) 5 workdays

Eaton EP-401063 ESR5-NE-51-24VDC contact extension 24 VDC Sicherheitsrelais Kontakterweiterung, 5 Freigabe- + 1 Meldepfad, 24 V DC, abnehmbare Klemmen, Starteingang, Rückführkreis, Zulassung gemäß UL, Zulassung für TÜV

Lieske Part No.: 642990
Mfg Part No: EP-401063
Type: ESR5-NE-51-24VDC

231,86 EUR 241,62 EUR

≈ £195.92 | ≈ $259.22

Made to order · Delivery time approx. 20 workdays

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)

✓	For lower safety requirements (PL a to PL c)
✓	One input signal is monitored
✓	No protection against cable break or short circuit at the sensor
✓	Suitable for simple guards and safety mats (low risks)

⚠ Dual-Channel Evaluation (Category 3, 4)

✓	For high safety requirements (PL d, PL e)
✓	Two independent input signals are evaluated redundantly
✓	Integrated cross-circuit detection and wire break monitoring
✓	Mandatory for emergency stop, interlocked guards, light curtains at robot cells

Related Categories in the Shop

Further products from the Industrial Relays and Contactors range at Industry-Electronics.

► 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.

► 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.

⚠ 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