Safety relay from Phoenix Contact
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Safety relay from Phoenix Contact
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 Phoenix Contact 1009832 PSR-MC38-2NO-1DO-24DC-PI safety relay
Safety relay for emergency stop, safety doors and light grids up to SIL 3, Cat. 4, PL e, 1- or 2-channel operation, automatic or manual, monitored start, 2 enabling current paths, 1 signal output, ...Lieske Part No.: 1908611 Mfg Part No: 1009832 Type: PSR-MC38-2NO-1DO-24DC-PI |
280,25 EUR
 ≈ £236.81 | ≈ $313.32
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1015503 PSR-MC31-2SDO-1DO-24DC-SP safety switching device
Safety switching device for safety mats, safety edges, emergency stops, safety doors, light curtains up to SIL 3, Cat. 4, PL e, 1-/2-channel operation, automatic or manual start, 2 safe HL outputs, 1 ... Lieske Part No.: 1909325 Mfg Part No: 1015503 Type: PSR-MC31-2SDO-1DO-24DC-SP |
237,50 EUR
≈ £200.69 | ≈ $265.53
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1015520 PSR-MC31-2SDO-1DO-24DC-SC safety switching device
Safety switching device for safety mats, safety edges, emergency stops, safety doors, light curtains up to SIL 3, Cat. 4, PL e, 1-/2-channel operation, automatic or manual start, 2 safe HL outputs, 1 ... Lieske Part No.: 1909324 Mfg Part No: 1015520 Type: PSR-MC31-2SDO-1DO-24DC-SC |
237,50 EUR
≈ £200.69 | ≈ $265.53
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1015533 PSR-MC73-5NO-1DO-24DC-SC safety relay
Safety relay for emergency stop, safety doors, light curtains up to SIL 3, Cat. 4, PL e, 1- or 2-channel operation, cross-circuit detection, retriggerable, release/pick-up delay 0.2 s to 300 s, 5 ... Lieske Part No.: 1909326 Mfg Part No: 1015533 Type: PSR-MC73-5NO-1DO-24DC-SC |
489,25 EUR 495,44 EUR
≈ £413.42 | ≈ $546.98
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1082024 PSR-MC45-3NO-1DO-24DC-SC safety relay
Safety relay for emergency stop, safety doors and light grids up to SIL 3, Cat. 4, PL e, 1- or 2-channel operation, automatic or manual, monitored start, 3 enabling current paths, US = 24 V DC, ... Lieske Part No.: 1910703 Mfg Part No: 1082024 Type: PSR-MC45-3NO-1DO-24DC-SC |
231,80 EUR
≈ £195.87 | ≈ $259.15
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1082029 PSR-MC45-3NO-1DO-24DC-SP safety relay
Safety relay for emergency stop, safety doors and light curtains up to SIL 3, Cat. 4, PL e, 1- or 2-channel operation, automatic or manual, monitored start, 3 enabling current paths, US = 24 V DC, ... Lieske Part No.: 1775499 Mfg Part No: 1082029 Type: PSR-MC45-3NO-1DO-24DC-SP |
231,80 EUR
≈ £195.87 | ≈ $259.15
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104868 PSR-M-EF4-SDO4-DO4-PI expansion module
Safe extension module with 4 safe outputs (0.4 A), 4 reset inputs, 4 signal outputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910714 Mfg Part No: 1104868 Type: PSR-M-EF4-SDO4-DO4-PI |
444,60 EUR
≈ £375.69 | ≈ $497.06
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104884 PSR-M-EF3-SDI12-MAT-PI expansion module
Safe extension module with 12 safe inputs for monitoring safety mats and safety edges, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910712 Mfg Part No: 1104884 Type: PSR-M-EF3-SDI12-MAT-PI |
433,30 EUR
≈ £366.14 | ≈ $484.43
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104887 PSR-M-EF2-SDI16-PI expansion module
Safe extension module with 16 safe inputs, TBUS interface, up to SIL 3, Cat. 4/PL e, SIL 3, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910710 Mfg Part No: 1104887 Type: PSR-M-EF2-SDI16-PI |
401,85 EUR
≈ £339.56 | ≈ $449.27
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104888 PSR-M-EF2-SDI16-SC expansion module
Safe extension module with 16 safe inputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, TBUS connector included Lieske Part No.: 1910711 Mfg Part No: 1104888 Type: PSR-M-EF2-SDI16-SC |
401,85 EUR
≈ £339.56 | ≈ $449.27
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104889 PSR-M-EF1-SDI8-SDO4-DO4-PI expansion module
Safe extension module with 8 safe inputs and 4 safe outputs, 4 reset inputs or 4 signal outputs, 4 clock outputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, TBUS connector ... Lieske Part No.: 1910708 Mfg Part No: 1104889 Type: PSR-M-EF1-SDI8-SDO4-DO4-PI |
470,25 EUR
≈ £397.36 | ≈ $525.74
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104890 PSR-M-EF1-SDI8-SDO4-DO4-SC expansion module
Safe extension module with 8 safe inputs and 4 safe outputs, 4 reset inputs or 4 signal outputs, 4 clock outputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, TBUS connector ... Lieske Part No.: 1910709 Mfg Part No: 1104890 Type: PSR-M-EF1-SDI8-SDO4-DO4-SC |
470,25 EUR
≈ £397.36 | ≈ $525.74
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104972 PSR-M-B1-SDI8-SDO2-DO2-PI safety module
Configurable safety module (basic module), 8 safe inputs, 2 safe outputs, 2 reset inputs, 2 signal outputs, 4 clock outputs, expandable via TBUS, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, ... Lieske Part No.: 1910698 Mfg Part No: 1104972 Type: PSR-M-B1-SDI8-SDO2-DO2-PI |
474,05 EUR
≈ £400.57 | ≈ $529.99
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104974 PSR-M-B2-SDI8-SDO4-DO4-SC safety module
Configurable safety module (basic module), 8 safe inputs, 4 safe outputs, 4 reset inputs or 4 signal outputs, 4 clock outputs, expandable via TBUS, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, ... Lieske Part No.: 1910701 Mfg Part No: 1104974 Type: PSR-M-B2-SDI8-SDO4-DO4-SC |
593,75 EUR
≈ £501.72 | ≈ $663.81
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104975 PSR-M-B2-SDI8-SDO4-DO4-PI safety module
Configurable safety module (basic module), 8 safe inputs, 4 safe outputs, 4 reset inputs or 4 signal outputs, 4 clock outputs, expandable via TBUS, up to SIL 3, Cat. 4/PL e, pluggable push-in ... Lieske Part No.: 1910700 Mfg Part No: 1104975 Type: PSR-M-B2-SDI8-SDO4-DO4-PI |
593,75 EUR
≈ £501.72 | ≈ $663.81
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104976 PSR-M-EF5-SDO4-2A-DO8-SC expansion module
Safe extension module with 4 safe outputs (2 A), 4 reset inputs, 8 signal outputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, TBUS connector included Lieske Part No.: 1910717 Mfg Part No: 1104976 Type: PSR-M-EF5-SDO4-2A-DO8-SC |
494,00 EUR
≈ £417.43 | ≈ $552.29
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104977 PSR-M-EF5-SDO4-2A-DO8-PI expansion module
Safe extension module with 4 safe outputs (2 A), 4 reset inputs, 8 signal outputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910716 Mfg Part No: 1104977 Type: PSR-M-EF5-SDO4-2A-DO8-PI |
494,00 EUR
≈ £417.43 | ≈ $552.29
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104981 PSR-M-B1-SDI8-SDO2-DO2-SC safety module
Configurable safety module (basic module), 8 safe inputs, 2 safe outputs, 2 reset inputs, 2 signal outputs, 4 clock outputs, expandable via TBUS, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, ... Lieske Part No.: 1910699 Mfg Part No: 1104981 Type: PSR-M-B1-SDI8-SDO2-DO2-SC |
474,05 EUR
≈ £400.57 | ≈ $529.99
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104982 PSR-M-EF6-SDOR4-SC expansion module
Safe extension module with 4 safe relay outputs, 4 reset inputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable screw terminal, TBUS connector included Lieske Part No.: 1910719 Mfg Part No: 1104982 Type: PSR-M-EF6-SDOR4-SC |
559,55 EUR
≈ £472.82 | ≈ $625.58
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104983 PSR-M-EF6-SDOR4-PI expansion module
Safe extension module with 4 safe relay outputs, 4 reset inputs, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910718 Mfg Part No: 1104983 Type: PSR-M-EF6-SDOR4-PI |
559,55 EUR
≈ £472.82 | ≈ $625.58
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104986 PSR-M-EF7-SAI4-PI expansion module
Safe extension module with 4 safe analog inputs, 0 V ... 10 V, 0 mA or 4 mA ... 20 mA, TBUS interface, up to Cat. 4/PL e, SIL 3, pluggable push-in terminal, TBUS connector included Lieske Part No.: 1910720 Mfg Part No: 1104986 Type: PSR-M-EF7-SAI4-PI |
1.025,05 EUR
≈ £866.17 | ≈ $1,146.01
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1104987 PSR-M-EM1-PROX2-SC expansion module
Safe extension module for monitoring standstill and speed, monitoring of 2 axes, suitable for NPN/PNP proximity switches, TBUS interface, up to SIL 3, Cat. 4/PL e, plug-in screw terminal, TBUS ... Lieske Part No.: 1910725 Mfg Part No: 1104987 Type: PSR-M-EM1-PROX2-SC |
489,15 EUR
≈ £413.33 | ≈ $546.87
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1105010 PSR-M-EM3-HTL1-PI expansion module
Safe extension module for monitoring standstill, speed, direction of rotation, monitoring of 2 axes, NPN/PNP proximity switch, 1 x HTL encoder, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable ... Lieske Part No.: 1910726 Mfg Part No: 1105010 Type: PSR-M-EM3-HTL1-PI |
555,75 EUR
≈ £469.61 | ≈ $621.33
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Phoenix Contact 1105012 PSR-M-EM4-SINCOS1-PI expansion module
Safe extension module for monitoring standstill, speed, direction of rotation, monitoring of 2 axes, NPN/PNP proximity switch, 1 x Sin/Cos encoder, TBUS interface, up to SIL 3, Cat. 4/PL e, pluggable ... Lieske Part No.: 1910728 Mfg Part No: 1105012 Type: PSR-M-EM4-SINCOS1-PI |
811,30 EUR
≈ £685.55 | ≈ $907.03
Made to order · Delivery time approx. 20 workdaysinfo_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 |