AB MSR310P Safety Relay | Replacement, Equivalent & Selection Guide
The Allen-Bradley (AB) MSR310P is a dual-channel safety relay designed for emergency stop, safety gate, and light curtain monitoring applications. This page provides full technical specifications, compatible replacement models, system compatibility notes, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number: MSR310P
- SKU: MSR310P
- Type: Safety Relay Module
- Input Channels: Dual-channel (2-channel)
- Safety Category: Up to Category 4 / PLe (EN ISO 13849-1)
- SIL Rating: SIL 3 (IEC 62061)
- Supply Voltage: 24 V DC / 24–240 V AC
- Output Contacts: 3 NO safety outputs + 1 NC auxiliary
- Response Time: ≤ 20 ms
- Operating Temperature: 0 °C to +55 °C
- Mounting: DIN rail (35 mm)
- Housing Width: 22.5 mm
- Weight: ~200 g
- Certifications: CE, UL, cUL, TÜV
- Enclosure Rating: IP40 (module), IP54 (panel-mounted)
Compatible Replacement & Equivalent Models
The following models are commonly used as drop-in or functional replacements for the MSR310P. Always verify wiring diagrams and safety ratings before substitution.
- Allen-Bradley MSR127TP – Expanded output version; same dual-channel input logic
- Allen-Bradley MSR210P – Compact variant; suitable for lower-density panels
- Pilz PNOZ X3 – Industry-standard equivalent; Category 4 / PLe, 24 V DC
- Pilz PNOZ s3 – PNOZ s-series; DIN rail, 3 NO outputs, SIL 3
- Schmersal SRB301ST – Functional equivalent; dual-channel E-stop monitoring
- SICK UE10-3OS2D0 – Compact safety relay; compatible wiring topology
- Omron G9SB-3012-D – 3 NO / 1 NC; 24 V DC; Category 4 equivalent
- Phoenix Contact PSR-SCP-24DC/ESA4/3X1/1X2 – Modular safety relay; equivalent safety level
Note: Konmask.com supplies both original AB MSR310P units and verified equivalent models. Contact us to confirm cross-reference suitability for your application.
Why Choose the Original Model
- OEM Compatibility: Guaranteed fit within existing Allen-Bradley / Rockwell Automation safety architectures
- Certified Safety Performance: Factory-validated SIL 3 / PLe ratings with full documentation
- Regulatory Compliance: Pre-certified for CE, UL, and TÜV — reduces re-validation burden
- Long-Term Support: Rockwell Automation spare parts availability and firmware continuity
- Audit Trail: Original part numbers simplify machine safety audits and LOTO documentation
Typical Applications
- Emergency stop (E-stop) circuit monitoring
- Safety gate and interlocked guard door control
- Light curtain and safety mat interface
- Two-hand control systems
- Robot cell perimeter guarding
- Conveyor and press machine safety circuits
- Packaging and palletizing line safety integration
System Compatibility
- PLC Platforms: Allen-Bradley MicroLogix, CompactLogix, ControlLogix, GuardLogix
- Safety Networks: Compatible with hardwired safety circuits; can interface with DeviceNet Safety and EtherNet/IP Safety via GuardLogix
- Panel Standards: Designed for IEC 60204-1 compliant control panels
- Wiring Topology: Supports single-channel and dual-channel monitored configurations
- Third-Party PLCs: Functional compatibility with Siemens S7, Mitsubishi iQ-R, and Omron NX safety controllers when used in hardwired mode
Selection Guide
Use the criteria below to confirm the MSR310P is the right choice — or to identify the best alternative:
- Required Safety Level: If PLe / SIL 3 is mandatory → MSR310P or Pilz PNOZ s3
- Supply Voltage: 24 V DC only → MSR310P standard; 24–240 V AC/DC → MSR310P universal input variant
- Output Count: 3 NO + 1 NC → MSR310P; 4 NO + 2 NC → consider MSR127TP
- Panel Space: 22.5 mm width → MSR310P; ultra-compact (17.5 mm) → MSR210P
- Budget Sensitivity: OEM preferred → AB MSR310P; cost-optimized → Pilz PNOZ X3 or Omron G9SB
- Existing Brand Ecosystem: Full AB/Rockwell environment → stay with MSR310P for seamless integration
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels
- Each module inspected for physical integrity, label authenticity, and date code consistency
- Batch traceability records available on request
- Anti-counterfeit verification performed on all AB-branded components
- Warranty: 12 months from shipment date (DOA replacement within 7 days)
How to Order
- Step 1: Confirm part number: MSR310P (Allen-Bradley / Rockwell Automation)
- Step 2: Specify quantity and required delivery timeline
- Step 3: Contact us via email or phone for a formal quotation
- Step 4: Submit PO — we accept T/T, PayPal, and trade credit (approved accounts)
- Step 5: Shipment within 3–7 business days; express options available
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can the Pilz PNOZ X3 directly replace the AB MSR310P?
A: Functionally yes for most E-stop and gate monitoring circuits. Wiring pinout differs — refer to both datasheets before substitution.
Q: Is the MSR310P still in production?
A: Rockwell Automation periodically updates safety relay lines. Contact Konmask.com to confirm current production status and available stock.
Q: Can I use the MSR310P with a Siemens S7-1500 PLC?
A: Yes, in hardwired safety circuit mode. The relay operates independently of PLC brand for standard E-stop and gate monitoring.
Q: What is the lead time for the MSR310P?
A: Typically 3–7 business days from stock. For large quantities or urgent orders, contact us directly for expedited options.
Q: Do you provide a certificate of conformity?
A: Yes. CoC and inspection reports are available upon request for all shipments.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
