Guardmaster 440R-F23027 MSR9T – Industrial-Grade Safety Relay for Critical Protection
As your trusted automation partner with 20+ years’ expertise, Stoker Automation Technology proudly presents the Rockwell Allen-Bradley 440R-F23027 Guardmaster MSR9T Safety Relay – engineered for mission-critical safety applications across 18+ industrial sectors including automotive, energy, and heavy manufacturing.
Technical Specifications
- Brand: Rockwell Automation
- Model: 440R-F23027 Guardmaster
- Submodel: MSR9T
- Input Voltage: 100-250V AC/DC (Universal)
- Response Time: <10ms (Industry-leading)
- Operating Temp: -25°C to +70°C
- Safety Standards: ISO 13849-1, IEC 62061
Core Safety Features
- Dual-channel safety inputs with cross monitoring
- Automatic fault detection & emergency shutdown
- STO (Safe Torque Off) functionality
- Machine status monitoring via LED indicators
- Dual solid-state safety outputs (OSSDs)
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Why Choose Stoker?
- 5,000㎡ warehouse with 98% availability rate
- 2-year extended warranty on safety components
- 24/7 technical support team
- ISO-certified logistics & handling
- OEM-equivalent quality assurance
Need custom configuration? Contact our safety solutions team for application-specific recommendations.








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