440R-M23151
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Overview of Allen Bradley 440R-M23151
The Allen Bradley 440R-M23151 is a reliable single-function safety relay designed to meet industrial safety control requirements. Operating with a 24 VAC/DC power supply, this device offers dual normally open (2NO) delayed safety outputs with a timing range from 1.5 to 30 seconds. Its compact 35 mm DIN rail mountable design makes it suitable for space-constrained control panels. The safety relay supports automatic, manual, or monitored reset options for enhanced operational flexibility and monitoring. Engineered to comply with stringent safety standards, the 440R-M23151 ensures dependable performance in safety-related automation circuits, especially where delayed outputs are necessary for controlled stop or sequencing functions.
Key Features of Allen Bradley 440R-M23151
- 24 VAC/DC power supply compatible for flexible integration
- 2 Normally Open (2NO) safety relay outputs with delayed triggering
- Output delay adjustable from 1.5 to 30 seconds for controlled shutdowns
- Mounts easily on standard 35 mm DIN rails to simplify installation
- Supports automatic, manual, and monitored reset configurations
- Compact housing with removable terminals for quick wiring and maintenance
- Rated for 3 A contact current to handle typical safety load applications
- Complies with high safety category standards for industrial automation
- Robust design for reliable operation in manufacturing environments
Technical Specs of 440R-M23151
| Parameter | Specification |
|---|---|
| Power Supply | 24V AC/DC |
| Output Configuration | 2 Normally Open (2NO) delayed safety outputs |
| Timing Range | 1.5 to 30 seconds delay |
| Contact Rating | 3 Amps @ 24V |
| Mounting | 35 mm DIN Rail |
| Reset Options | Automatic, Manual, Manual Monitored |
| Terminal Type | Removable Screw Terminals |
| Dimensions (HxWxD) | Approx. 90 mm x 45 mm x 60 mm |
| Operating Temperature | -10°C to +55°C |
Applications / Use Case
The Allen Bradley 440R-M23151 safety relay is widely used in industrial safety circuits requiring monitored manual reset and delayed safety output functions. It is ideal for applications such as machine safeguarding, emergency stop circuit monitoring, conveyor shutdown sequences, and controlled stop of hazardous machinery. The configurable reset options provide flexibility for different safety protocols, ensuring compliance with safety regulations. Typical environments include manufacturing plants, packaging machinery, automotive production, and any operation requiring high-reliability safety interlock functions. This relay helps minimize downtime and prevents accidental restarts while allowing safe machine operation and maintenance.
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