440R-N23135
440R-N23135
Manufacturer: ALLEN BRADLEY
Condition: New and Unused, Surplus.
Overview of Allen Bradley 440R-N23135
The Allen Bradley 440R-N23135 is a monitored manual reset safety relay designed for industrial automation safety applications. Operating at 24 VAC/VDC, this device provides three normally open (3NO) safety contacts along with an auxiliary normally closed (NC) contact, offering secure control and monitoring of safety circuits. It is compact, with a 22.5 mm wide enclosure optimized for DIN rail mounting, making it an efficient choice for panel installations. The relay meets stringent safety standards, including ISO 13849-1 Performance Level e and Safety Integrity Level (SIL) 3 ratings, ensuring reliable machine and operator safety. Its monitored manual reset function helps prevent unintended restarts, enhancing operational safety in critical environments.
Key Features of Allen Bradley 440R-N23135
- 24 VAC/VDC supply voltage suitable for diverse power sources
- Three safety-rated normally open (NO) contacts for reliable safety control
- One auxiliary normally closed (NC) contact for status signaling
- Monitored manual reset to avoid accidental restart of machines
- Compact 22.5 mm width, ideal for space-saving DIN rail mounting
- Compliance with ISO 13849-1 Category 4 and PL e for highest safety level
- Supports Safety Integrity Level (SIL) 3 compliant applications
- Removable screw terminals for easy installation and maintenance
- Auxiliary output signals the status of safety outputs, increasing diagnostic capabilities
- Meets multiple international safety standards including IEC 60204-1 and ANSI B11.19
Technical Specs of 440R-N23135
| Parameter | Specification |
|---|---|
| Supply Voltage | 24 VAC/VDC |
| Number of Safety Contacts | 3 Normally Open (NO) |
| Auxiliary Contact | 1 Normally Closed (NC) |
| Reset Type | Monitored Manual Reset |
| Contact Rating | 3 Amps |
| Width | 22.5 mm |
| Length | 114.5 mm |
| Safety Category | Cat. 4 (ISO 13849-1) |
| Performance Level (PL) | e |
| SIL Rating | SIL 3 |
| Mounting | 35 mm DIN Rail |
Applications / Use Case
The Allen Bradley 440R-N23135 safety relay is widely used in industrial machinery to ensure safe stopping of equipment and to monitor emergency stop functions. It is a key component in safety circuits for manufacturing lines, packaging machines, and automated handling systems. Its design supports safety standards compliance for machine guarding and operator protection. The relay's monitored manual reset feature ensures that machines do not restart accidentally after a stop condition, which is critical in minimizing risk during maintenance or emergency situations. Its compact dimensions make it suitable for retrofitting into control panels where space is limited. Overall, the 440R-N23135 delivers dependable safety relay functions necessary for meeting regulatory requirements across automotive, food and beverage, and material handling industries.
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