Reliable power supply for industrial applications
At Phoenix Contact, “Power Reliability” refers to a comprehensive approach to ensuring system availability in industrial applications. It involves not only supplying electrical energy but also the intelligent interaction of power supply, protection, monitoring, and communication. The goal is to achieve full transparency of the energy system, detect faults early, and proactively prevent failures.
Power Reliability, therefore, refers to maximum operational safety achieved through intelligent system integration. Phoenix Contact offers coordinated product combinations tailored to the specific requirements of industrial power supply. In addition to technical advantages, these solutions also provide economic value by reducing downtime, lowering maintenance needs, and simplifying integration into existing systems. The five examples below demonstrate the added value created through the interaction of these devices.
Quint Power power supply and PLT-SEC surge protection

This combination reliably protects the power supply from transient overvoltages caused by lightning strikes or switching operations. The Quint Power supply offers high immunity to interference, while the PLT‑SEC surge protection provides fast response and long service life. Together, they significantly extend the service life of the power supply and keep the system operational even during external disturbances
Trio Power power supply with integrated device protection
Trio Power combines power supply and electronic device protection in one compact housing, saving control‑cabinet space, reducing wiring, and increasing availability through intelligent load management.
In the event of overload, it sheds non‑critical loads to protect parallel‑connected devices. The IO‑Link interface enables easy access to diagnostic and configuration data. This combination also reduces wiring effort by up to 70 percent and simplifies commissioning with preconfigured parameters.

Quint DC UPS uninterruptible power supply and battery module
The interaction between the Quint DC UPS and the battery module ensures uninterrupted power during a mains failure. The intelligent Quint DC UPS increases system availability through its IQ Technology battery management and high‑performance charger.

IQ Technology continuously monitors the battery’s state of charge and remaining service life, automatically detects the battery, and adjusts the charging current to the operating conditions and battery type. With integrated Ethernet interfaces, the system can be easily incorporated into industrial networks, enabling predictive maintenance.
EMpro energy measuring device and Rogowski coil

This solution allows easy retrofitting of existing systems for energy monitoring. The Rogowski coil provides contactless current measurement, while the EMpro device processes the data and makes it available through various interfaces. This allows quick installation without downtime and seamless integration into energy management systems
One interface – full data transparency for a reliable 24 V system
The combination of the Quint Power supply and the Caparoc circuit breaker system demonstrates the Power Reliability concept in practice. It provides a dependable power supply along with end‑to‑end communication and monitoring from the feed‑in point to each individual load.
Interfaces such as Profinet, Ethernet/IP, EtherCAT, Modbus, and IO‑Link enable seamless data exchange between the power supply, device protection, and control level. All key data, current consumption, voltage, temperature, load distribution, and error states is captured and transmitted in real time, creating a new level of transparency in the control cabinet.

Permanent monitoring makes it possible to identify and resolve maintenance issues early, before they impact production. Faults can be detected immediately and corrected without lengthy troubleshooting. Load profiles can be analyzed and optimized so that the system uses only the energy required for the process. An integrated web server provides access to all system data via a standard browser, eliminating the need for additional software and simplifying commissioning, maintenance, and fault analysis. Configuration changes can also be made directly through the web interface.
Selective Fuse Breaking (SFB) Technology in the Quint Power supply selectively trips miniature circuit breakers during a short circuit without affecting other loads, increasing operational safety and preventing cascading faults. Electronic circuit breakers also benefit from SFB Technology, as some devices lack active current limitation to prevent voltage dips during short circuits. The short‑term power reserve further helps maintain system stability by avoiding prolonged voltage drops in fault conditions.
Future-proof solutions with economic benefits
In an era of increasing digitalization and automation, the power supply has become a strategic component of industrial systems. With its Power Reliability concept, Phoenix Contact provides a future‑proof solution that goes far beyond traditional power supply. Intelligent hardware, end‑to‑end communication, and modular expansion deliver high transparency, safety, and efficiency.
The “perfect teams” presented here show how well‑designed product combinations meet technical requirements while also offering economic benefits. The “One interface – full data transparency” solution is particularly notable for its comprehensive system integration, enabling proactive control and monitoring of the entire 24 V system. Such solutions will become increasingly important in the context of Industry 4.0, predictive maintenance, and energy‑efficient operation. Power Reliability is therefore emerging as a key concept for sustainable, safe, and economical production.
Read more about our perfect teams.
