For industrial equipment involving personal safety protection, machine interlock stop, Sicherheitstür / light curtain / emergency stop / two-hand control, the Allen‑Bradley 440R series safety relays are the standard default components for Rockwell Automation safety circuits. They cover almost all safety applications for machinery in discrete manufacturing and process industries.
- Modellsegmentdefinition
| Modellsegment | Beschreibung |
| MSR230P | Product identifier: MSR = Minotaur Safety Relay; 230 = 24VDC control voltage; P = Manual / automatic reset function |
| 440R | Prefix for Allen radley Rockwell Automation 440R safety product series |
| H | Funktionscode: Monitoring-type safety relay, suitable for single/dual-channel safety inputs such as emergency stop buttons and safety door switches |
| 23180 | Product serial number: Series B; 2 normally open safety outputs, 1 normally closed auxiliary output, Standardkonfiguration |
| Vollständiges Modell | 440R-H23180 (official full part number); MSR230P is the product series identifier |
- Kernspezifikationen
| Parameterkategorie | Spezifikationen |
| Basic Info | Allen-Bradley Guardmaster Minotaur MSR230P Safety Relay, Series B, Made in USA, Obsolete (Dec 31, 2017) |
| Steuerspannung | 24VDC (19.2~31.2VDC) |
| Safety Input | 1 dual-channel safety input (unterstützt 2 normalerweise geschlossene Kontakte) |
| Safety Output | 2 Normalerweise geöffnet (NEIN) Sicherheitskontakte; |
| Bewertet: 3Ein @24VDC (DC-13), 6A @240VAC (AC-15) | |
| Auxiliary Output | 1 Normalerweise geschlossen (NC) Hilfskontakt; |
| Bewertet: 3Ein @24VDC / 240VAC | |
| Sicherheitsniveau | IN ISO 13849-1 Kat.4, Performance Level PL e, SIL 3 |
| Ansprechzeit | ≤15ms |
| Reset-Modus | Selectable Manual Reset (MM) / Automatischer Reset (AM) |
| Montage | DIN-Schienenmontage, 45mm Breite |
| Schutz vor Eindringen | IP20 (Frontplatte) |
| Betriebstemperatur | -25℃ ~ +60℃ |
| Lagertemperatur | -40℃ ~ +85℃ |
| Zertifizierungen | CE, UL, CSA, TÜV |
- Standard Accessories List
- Safety Relay Main Unit (440R-H23180 / MSR230P)
- Installationshandbuch (Hard copy + Electronic version)
- Certificate of Conformity & Garantiekarte
- DIN rail mounting clips
- Terminal identification labels
- Reset button protective cover (Optional)
- Cross-Brand Equivalent & Replacement Table
| Marke | Äquivalentes Modell | Key Parameter Match | Main Differences |
| Rockwell Recommended Replacement | 440R-EM4R2 | 24VDC, 2NO safety output, 1NC auxiliary output, Kat.4 | Modularer Aufbau, expandable functions, higher price |
| Pilz | PNOZ X1 24VDC | 24VDC, 2NO safety output, 1NC auxiliary output, Kat.4 | Faster response ≤10ms, similar price |
| Siemens | 3SK1111-1AB30 | 24VDC, 2NO safety output, 1NC auxiliary output, Kat.4 | Integrated diagnostics, TIA Portal compatible |
| Schneider | XPSAC5121 | 24VDC, 2NO safety output, 1NC auxiliary output, Kat.4 | More compact (22.5mm Breite), kostengünstig |
| Weidmüller | SCS 24VDC P1 | 24VDC, 2NO safety output, 1NC auxiliary output, Kat.4 | Flexible wiring, ideal for compact control cabinets |
- Auswahlrichtlinien & Ersatzlösungen
Auswahlrichtlinien
- Safety Function Matching
Suitable for single/dual-channel safety input monitoring: Not-Aus-Taster, safety door switches, safety mats, usw.
Meets high safety rating Cat.4 / PL e / SIL 3 for hazardous machinery protection.
Not suitable for complex functions such as safety door interlock or two-hand control.
- Electrical Parameter Verification
Control voltage must match 24VDC (19.2~31.2VDC).
Safety output load current ≤3A@24VDC or ≤6A@240VAC.
Auxiliary output load current ≤3A@24VDC/240VAC.
- Installation & Umweltanforderungen
Betriebstemperatur: -25℃~+60℃ (derate above 40℃).
Relative Luftfeuchtigkeit: 5%~95 % (nicht kondensierend).
Install inside control cabinet; avoid dust, corrosive gas and heavy vibration.
Ersatzlösungen
- Same-Brand Upgrade Replacement
440R-EM4R2: Modular, expandable functions, compatible with original mounting dimensions.
440R-M23088 (MSR138.1DP): Single-channel monitoring, 2NO+1NC, equivalent performance.
- Function Expansion Options
Add 440R-EM series expansion modules for multi-channel safety monitoring.
Adopt 440R-GSR intelligent safety relays with Profinet / EtherNet/IP-Kommunikation.
Upgrade to Guardmaster MSR200 expandable system, unterstützt bis zu 22 input points.
- Cross-Brand Recommendation
Cost performance: Schneider XPSAC5121 (kompakt & niedrige Kosten)
Premium safety performance: Pilz PNOZ X1 (schnelle Reaktion, full certifications)
Siemens system integration: 3SK1111-1AB30 (seamless TIA Portal integration)
- Anwendungsszenarien
Machine tool safety door monitoring & emergency stop control
Packaging machinery safety protection systems
Production line safety interlock control
Robot workstation safety perimeter protection
Printing machinery safety protection circuits
- MSR Series Main Model List
| Modell | Steuerspannung | Safety Output | Auxiliary Output | Reset-Modus | Sicherheitsniveau |
| MSR230P (440R-H23180) | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL 3 |
| MSR220P (440R-H23178) | 24VDC | 2NEIN | 1NC | Handbuch | Cat.4/PL e/SIL 3 |
| MSR126.1R (440R-N23118) | 230VAC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL 3 |
| MSR125HP (440R-D23171) | 24VAC/DC | 2NEIN | 1NC | Auto | Cat.4/PL e/SIL 3 |
| MSR330P (440R-W23222) | 24VDC | 3NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL 3 |
| MSR5T (440R-B23020) | 24VAC/DC | 3NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL 3 |
| MSR22LM (440R-P23071) | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL 3 |
- Cross-Brand Compatibility Chart (24VDC, 2NO+1NC)
| Marke | Modell | Sicherheitsniveau | Ansprechzeit | Breite | Preisklasse |
| Allen-Bradley | 440R-H23180 (MSR230P) | Cat.4/PL e/SIL 3 | 15MS | 45mm | $80~$120 |
| Pilz | PNOZ X1 24VDC | Cat.4/PL e/SIL 3 | 10MS | 22.5mm | $90~$130 |
| Siemens | 3SK1111-1AB30 | Cat.4/PL e/SIL 3 | 12MS | 22.5mm | $100~$140 |
| Schneider | XPSAC5121 | Cat.4/PL e/SIL 3 | 15MS | 22.5mm | $70~$100 |
| Weidmüller | SCS 24VDC P1 | Cat.4/PL e/SIL 3 | 15MS | 22.5mm | $80~$110 |
| Omron | G9SA-321-T075 | Cat.4/PL e/SIL 3 | 15MS | 22.5mm | $60~$90 |
- Key Features Summary
- High Safety Rating
Entspricht EN ISO 13849-1 Kat.4, PL e and SIL 3, suitable for high-risk machinery applications.
- Flexible Reset
Supports both manual and automatic reset modes to fit different site requirements.
- Reliable Performance
Dual-channel input monitoring with fail-safe design, ensuring safety outputs open under hazardous conditions.
- Kompakte Struktur
45mm DIN rail mounting saves control cabinet space.
- Globale Zertifizierungen
CE, UL, CSA, TÜV approved, suitable for international projects.
Allen-Bradley Guardmaster Minotaur MSR Series Full Model List
- Modellbenennungsregel
| Segment | Beschreibung | Beispiel |
| 440R- | Rockwell Allen radley 440R safety series prefix | 440R-H23180 |
| MSRXXX | Minotaur Safety Relay series ID | MSR230P |
| Steuerspannung | 24VDC / 24VAC/DC / 115VAC / 230VAC | 230=24VDC, 126=230VAC |
| Funktionscode | Überwachung / Two-hand / Time-delay / Erweiterung | H=Monitoring, D=Two-hand, G=Multi-output |
| Output Configuration | Sicherheit(NEIN) + Hilfs(NC) | 23180=2NO+1NC |
| Reset-Modus | P=Manual/Auto selectable, T=Manual, R=Auto | MSR230P = Manual/Auto reset |
| Terminaltyp | Behoben / Removable | M=Removable; no mark=Fixed |
- Full Main Model List by Category
2.1 Monitoring Safety Relays (Not-Aus / Safety Door)
| Offizielles Modell | Series ID | Steuerspannung | Safety Output | Aux Output | Reset-Modus | Sicherheitsniveau | Status |
| 440R-H23180 | MSR230P | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Obsolete |
| 440R-H23177 | MSR211P | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Obsolete |
| 440R-H23178 | MSR220P | 24VDC | 2NEIN | 1NC | Handbuch | Cat.4/PL e/SIL3 | Obsolete |
| 440R-N23118 | MSR126.1R | 230VAC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-N23112 | MSR126.1T | 230VAC | 2NEIN | 2NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-N23123 | MSR126R | 230VAC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-M23088 | MSR138.1DP | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-M23082 | MSR138.1DP | 115VAC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-B23020 | MSR5T | 24VAC/DC | 3NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-W23222 | MSR330P | 24VDC | 3NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-P23071 | MSR22LM | 24VDC | 2NEIN | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-G23029 | MSR10RD | 24VAC/DC | 8NEIN | — | Manual/Auto | Cat.4/PL e/SIL3 | Active |
2.2 Two-Hand Control Safety Relays
| Offizielles Modell | Series ID | Steuerspannung | Safety Output | Aux Output | Reset-Modus | Sicherheitsniveau | Status |
| 440R-D23166 | MSR125H | 24VDC | 2NEIN (Sofort) | — | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-D23163 | MSR125HP | 24VAC/DC | 2NEIN | 1NC | Auto | Cat.4/PL e/SIL3 | Active |
| 440R-E23194 | MSR132ED | 24VDC | 4NEIN (2s delay) | 2NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-E23195 | MSR132ED | 24VDC | 4NEIN (3s delay) | 2NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-C23136 | MSR131RTP | 24VAC/DC | 3NEIN | 2NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-C23139 | MSR131RTP | 24VAC/DC | 3NEIN | 2NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
2.3 Time-Delay Safety Relays
| Offizielles Modell | Series ID | Steuerspannung | Safety Output | Verzögerungsbereich | Aux Output | Reset-Modus | Sicherheitsniveau | Status |
| 440R-M23048 | MSR15D | 24VAC/DC | 2NEIN | 0.15–3s | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-M23083 | MSR138.1D | 115VAC | 2NEIN | 0.15–3s | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
| 440R-M23084 | MSR138.1D | 230VAC | 2NEIN | 0.15–3s | 1NC | Manual/Auto | Cat.4/PL e/SIL3 | Active |
2.4 Special Function Safety Relays
| Offizielles Modell | Series ID | Steuerspannung | Special Function | Sicherheitsniveau | Status |
| 440R-B23211 | MSR117T | 24VAC/DC | Single-channel monitoring | Cat.4/PL e/SIL3 | Active |
| 440R-C23017 | MSR6R/T | 24VAC/DC | General purpose | Cat.4/PL e/SIL3 | Active |
| 440R-S23015 | MSR100 | 24VAC/DC | Grundtyp | Cat.4/PL e/SIL3 | Active |
| 440R-S23016 | MSR100 | 24VAC/DC | Grundtyp | Cat.4/PL e/SIL3 | Active |
- Obsolete Model Replacement Guide
| Obsolete Model | Empfohlener Ersatz | Grund | Function Match |
| 440R-H23180 (MSR230P) | 440R-EM4R2 | Modular & erweiterbar | 90% |
| 440R-H23177 (MSR211P) | 440R-EM4R2 | Same output layout, mounting compatible | 95% |
| 440R-H23178 (MSR220P) | 440R-EM4R1 | Manueller Reset, 2NO+1NC | 95% |
| MSR300 Series | MSR / GSR / CR30 Series | More complete functions & upgraded performance | 85% |
- Quick Selection Table by Control Voltage
4.1 24VDC Models
| Series ID | Offizielles Modell | Safety Output | Aux Output | Reset-Modus |
| MSR230P | 440R-H23180 | 2NEIN | 1NC | Manual/Auto |
| MSR211P | 440R-H23177 | 2NEIN | 1NC | Manual/Auto |
| MSR220P | 440R-H23178 | 2NEIN | 1NC | Handbuch |
| MSR330P | 440R-W23222 | 3NEIN | 1NC | Manual/Auto |
| MSR22LM | 440R-P23071 | 2NEIN | 1NC | Manual/Auto |
| MSR125H | 440R-D23166 | 2NEIN (Sofort) | — | Manual/Auto |
| MSR138.1DP | 440R-M23088 | 2NEIN | 1NC | Manual/Auto |
4.2 230VAC Models
| Series ID | Offizielles Modell | Safety Output | Aux Output | Reset-Modus |
| MSR126.1R | 440R-N23118 | 2NEIN | 1NC | Manual/Auto |
| MSR126.1T | 440R-N23112 | 2NEIN | 2NC | Manual/Auto |
| MSR126R | 440R-N23123 | 2NEIN | 1NC | Manual/Auto |
| MSR138.1D | 440R-M23084 | 2NEIN | 1NC | Manual/Auto |
4.3 24VAC/DC Universal Models
| Series ID | Offizielles Modell | Safety Output | Aux Output | Reset-Modus |
| MSR5T | 440R-B23020 | 3NEIN | 1NC | Manual/Auto |
| MSR10RD | 440R-G23029 | 8NEIN | — | Manual/Auto |
| MSR15D | 440R-M23048 | 2NEIN | 1NC | Manual/Auto |
| MSR125HP | 440R-D23163 | 2NEIN | 1NC | Auto |
| MSR131RTP | 440R-C23136 | 3NEIN | 2NC | Manual/Auto |
- General Parameter Summary
| Modell | Breite | Ansprechzeit | Nennstrom | Schutz | Zertifizierungen |
| Most MSR Models | 45mm | ≤15ms | 3A@24VDC / 6A@240VAC | IP20 | CE, UL, CSA, TÜV |
| MSR10RD | 45mm | ≤15ms | 3A@24VDC / 6A@240VAC | IP20 | CE, UL, CSA, TÜV |
| MSR132ED | 45mm | ≤15ms | 3A@24VDC / 6A@240VAC | IP20 | CE, UL, CSA, TÜV |
Rockwell Allen‑Bradley 440R Series Safety Relay Full Application Overview
- Produktpositionierung
The 440R series is the core safety relay lineup of AB Guardmaster, including traditional MSR basic type, EM expansion type, GSR intelligent communication type, time-delay and two-hand dedicated types. All meet PL e / Kat.4 / SIL 3 high safety levels.
DIN rail mount, compatible with emergency stop, Sicherheitstür, light curtain, safety mat, two-hand button and all standard safety sensors.
- General Safety Application Scenarios
2.1 Emergency Stop Circuit Monitoring
Dual-channel contact detection for mushroom emergency stop buttons
Immediate power cut on E-stop; restart allowed only after reset
Standard safety circuit for all industrial machines
Typical model: 440R‑H23180(MSR230P), 440R‑M23088
2.2 Safety Guarding Door / Access Door Interlock
Machine guard doors, cabinet doors, perimeter fence doors stop machine when opened
Machine prohibited from starting if door not fully closed and locked
Compatible with hinge safety switches, bolt safety switches, electromagnetic door interlocks
2.3 Safety Light Curtain / Safety Scanner Interlock
Interface with photoelectric light curtains and laser safety scanners
Automatically cuts power when personnel enter hazardous area; reset permitted after evacuation
Ideal for robotic stations, stamping and pick-and-place stations
2.4 Two-Hand Synchronous Start Control
Safe two-hand start for presses, punch presses and riveting machines
Machine action only activates when both buttons pressed simultaneously to prevent hand injury
Dedicated models: 440R‑D23166, MSR125H
2.5 Time-Delay Safe Stop
Delayed power-off for fans, inertial loads and high-speed spindles
Safety signal triggers delayed output disconnection; unlock maintenance only after full mechanical stop
Time-delay models: 440R‑M23048, MSR15D adjustable delay
2.6 Safety Mat / Safety Edge Detection
Safety mats and safety edges installed around robots and hazardous zones
Immediate machine stop when stepped on or touched
2.7 Multi-Unit Group Safety Interlock
Multi-station production line interlock: any station safety trigger stops the whole line
Use 440R‑EM expansion modules for multi-channel safety cascading
2.8 VFD / Servo Drive Safe Torque Off
Connect to STO / emergency stop terminals of VFD and servo drives
Safety relay dry contact cuts drive enable to realize safe torque off
- Branchenspezifische Anwendungen
- General Machine Tools
Lathe, milling, machining center, grinder, drill press: E-stop, guard door interlock, spindle safe stop.
- Automation Production & Conveyor Lines
Montagelinien, chain conveyors, Rollenlinien: line E-stop, sectional safety isolation, fence interlock.
- Robot Workstations & Manipulators
6-axis robot, gantry manipulator: fence safety door, light curtain protection, external safety interlock.
- Verpackung, Printing & Paper Machinery
Labeling, carton sealing, winding, printing machine: roller guard interlock, operator area light curtain protection.
- Injection Molding & Plastic Extrusion
Injection blower, extruder: mold safety door, two-hand start, light curtain anti-entry protection.
- Stamping, Forging & Hydraulic Press Equipment
Drücken, hydraulic press, bending machine: two-hand anti-pinch start, mold area light curtain & safety mat protection.
- Logistik & Warehousing Equipment
AS/RS stacker, sorter, elevator: maintenance door interlock, crossing area personnel safety stop.
- Automotive OEM & Component Manufacturing
Schweißen, painting, assembly workshop: robot cell interlock, fixture safety door group interlock.
- Essen & Pharmaceutical Machinery
Füllung, Versiegelung, pharmaceutical lines: hygienic safety switch interface, maintenance mode safety lock.
- Heben & Hoisting Equipment
Crane, lifting platform: Endschalter & E-stop monitoring, fence door interlock, overload safety interlock.
- HVAC & Industrial Fans/Pumps
Large fan, air compressor, chiller: cabinet door power interlock, inertial load delayed safe stop.
- Custom Non-Standard Automation
Assembly, testing, marking, riveting machines: global E-stop, local light curtain protection, multi-cylinder/servo interlock.
- 440R Subseries Application Matching
| 440R Subseries | Typisches Modell | Anwendungsbereich |
| MSR Basic | 440R‑H23180(MSR230P) | General E-stop, single safety door, single light curtain |
| Two-Hand Control | 440R‑D23163 | Punch press & hydraulic press two-hand start |
| Time-Delay Type | 440R‑M23048 | Inertial load, Lüfter & spindle delayed stop |
| EM Expansion | 440R‑EM4R2 | Multi-channel, multi-machine cascaded safety |
| GSR Intelligent | 440R‑GSR Series | Profinet/EtherNet/IP communication, upper diagnostic monitoring |
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