- Alternative Part Number: PSEN 2.1P-21/PSEN 2.1-20/8MM/LED/1
- Supply voltage (V): 24 V
- Type of supply voltage U1: DC
- Switching voltage: 24 V
- Ambient temperature: -25 – 70 ¬∞C
- Max. ambient temp. at 2000 m: +70 °C
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- Brand: Pilz
Pilz 774789 Safety relays / protection relays
Mfr # 774789
$554.48
/ea
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- 24 VDC Supply with Low Power Use: Operates on a 24 V DC supply voltage with a low power consumption of 5 W, ensuring efficiency in continuous duty.
- Flexible Contact Configuration: Provides 3 normally open (N/O) safety contacts, 1 normally closed (N/C) contact, and 1 time-delayed N/O contact for versatile safety system design.
- Dual-Channel Safety Inputs: Equipped with 2 inputs to support redundancy and fault detection for critical safety devices like E-Stops and guard switches.
- Standards-Compliant Safety Performance: Built in line with EN 60947-4-1, with safety contacts rated up to 240 V AC, ensuring compliance and reliable protection.
The Pilz PNOZ V 3S 24VDC 3N/O 1N/C 1N/O T (Part No. 774789) is a highly adaptable safety relay designed to monitor critical safety functions such as emergency stop buttons, safety gates, and enabling devices. As part of the trusted Pilz PNOZ series, this relay combines robust electrical performance with flexible output options, making it a reliable solution for safeguarding operators and machinery across diverse industrial applications.
Operating on a 24 V DC supply voltage and consuming only 5 W, the PNOZ V 3S offers efficient energy use while maintaining dependable performance in continuous operation. Its low consumption reduces strain on power systems, making it particularly valuable in modern facilities seeking to optimise energy efficiency.
A key advantage of the PNOZ V 3S lies in its comprehensive contact configuration. The relay provides 3 normally open (N/O) safety contacts, which can directly switch actuators such as motors, valves, or contactors. In addition, it includes 1 normally closed (N/C) contact for monitoring and signalling functions, plus 1 time-delayed N/O contact (N/O T). The delayed output enables staged power-down of machinery or controlled disconnection of specific components, making the relay ideal for applications where a sequential shutdown process is required.
The relay supports two safety inputs, allowing for dual-channel monitoring of protective devices. This redundancy ensures higher fault tolerance by detecting wiring errors, short circuits, or input failures, thereby guaranteeing that hazardous energy sources are reliably disconnected in unsafe conditions. Such functionality is crucial for achieving high levels of safety integrity in compliance with international standards.
Engineered in accordance with EN 60947-4-1 utilisation categories, the PNOZ V 3S supports safety contact voltages up to 240 V AC. This robust rating ensures it can be integrated into a broad spectrum of control systems, providing secure and dependable switching in demanding industrial environments.
The rugged construction of the PNOZ V 3S ensures long service life even under heavy industrial use. Its compact housing and clearly marked terminals simplify installation and reduce commissioning time, while its durable design minimises maintenance requirements and contributes to lower lifecycle costs.
The PNOZ V 3S is ideally suited for use in industries such as manufacturing, packaging, robotics, material handling, and process engineering, where reliable emergency stop and safety monitoring are mandatory. Its mix of immediate and time-delayed outputs makes it especially valuable for systems requiring both fast shutdown of hazardous processes and controlled disconnection of auxiliary equipment.
In summary, the Pilz PNOZ V 3S 24VDC 3N/O 1N/C 1N/O T offers energy-efficient operation, versatile outputs, dual-channel safety monitoring, and standards-compliant performance. It is a powerful and flexible safety relay solution that enhances both personnel protection and machine reliability in demanding industrial environments.
Product Specifications
| Manufacturer | Pilz |
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