Phoenix Contact CN-UB Series Surge Protection Devices
Reliable Surge Protection for Industrial and Power Systems
Surge protection is essential in modern electrical and automation systems to prevent damage from transient overvoltages, lightning strikes, or switching surges. The Phoenix Contact CN-UB Series Surge Protection Devices (SPD) are designed to ensure maximum protection and operational safety for DC power systems and equipment.
Key Features
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High Surge Current Capacity
Offers reliable protection against lightning-induced surges and transient overvoltage events. -
Modular and Replaceable Design
Pluggable modules allow easy maintenance and quick replacement without wiring changes. -
Wide Voltage Range
Supports 70V to 280V DC systems, suitable for diverse industrial applications. -
Visual Status Indication
Clear LED indicators show the protection status, ensuring system reliability and maintenance convenience. -
Compact and DIN-Rail Mountable
Space-saving design ideal for control cabinets and power distribution panels.
Recommended Models
| Order No. | Model | Nominal Voltage (DC) | Connection Type | Description |
|---|---|---|---|---|
| 2803153 | CN-UB-70DC-6-SB | 70V DC | Screw connection | Compact SPD for low-voltage DC systems |
| 2803166 | CN-UB-70DC-6-BB | 70V DC | Push-in connection | Tool-free wiring for quick installation |
| 2818148 | CN-UB-280DC-SB | 280V DC | Screw connection | High-voltage SPD for DC power distribution |
| 2818850 | CN-UB-280DC-BB | 280V DC | Push-in connection | Plug-in type, fast installation and replacement |
| 2801051 | CN-UB-280DC-3-SB | 280V DC | Screw connection | SPD with 3-pole protection for multi-line systems |
| 2801050 | CN-UB-280DC-3-BB | 280V DC | Push-in connection | Compact triple protection design |
| 2817686 | CN-UB/E-BB | — | Push-in connection | Base module for BB-type pluggable devices |
| 2763691 | CN-UB/E | — | Screw connection | Base module for SB-type SPDs |
Typical Applications
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Industrial control cabinets
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DC power supply systems
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Solar photovoltaic systems
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Communication and signal lines
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Automation control and monitoring systems
Selection Tips
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Voltage Rating: Choose SPD according to the nominal DC voltage of your system (e.g., 70V DC or 280V DC).
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Connection Type:
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“SB” = Screw connection (traditional wiring)
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“BB” = Push-in connection (tool-free quick wiring)
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Poles: For multi-line or balanced DC systems, use the 3-pole version (e.g., CN-UB-280DC-3-SB).
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Base Module Compatibility:
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SB models use CN-UB/E base.
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BB models use CN-UB/E-BB base.
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Conclusion
The Phoenix Contact CN-UB Series Surge Protection Devices deliver reliable and modular surge protection solutions for DC power systems. With high durability, easy installation, and a wide voltage range, they are ideal for use in industrial automation, solar energy, and control system environments.
Phoenix Contact CN-UB Series Surge Protection Devices
