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Phoenix Contact UT 2.5 Screw Terminal Block
The Phoenix Contact UT 2.5 Terminal delivers high-reliability screw-clamp electrical termination, patented Reakdyn screw locking, and dual bridge shafts engineered for industrial control panels and power distribution assemblies.
Description
The Phoenix Contact UT 2.5 Terminal delivers dependable industrial performance, precision process control, and high metrological reliability engineered specifically for industrial automation, electrical marshaling panels, process control skids, and continuous plant monitoring.
Industrial Precision with the Phoenix Contact UT 2.5 Terminal
Engineered for mission-critical installations, the Phoenix Contact UT 2.5 Terminal provides high operating reliability, compliance with international engineering standards, and robust signal integrity across challenging factory environments. Designed to eliminate operational downtime and minimize maintenance overhead, the instrument integrates seamlessly into modern supervisory systems and distributed plant architectures.
The system incorporates industrial-grade metallurgy, comprehensive electronic safeguards, and vibration-resistant mechanical connections to ensure uninterrupted performance across diverse operating conditions. Field commissioning and diagnostics are streamlined through intuitive physical interfaces, standardized mounting architectures, and universal telemetry connectivity.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Nominal Conductor Cross-Section | 2.5 mm² solid or stranded (accepts 0.14 mm² to 4.0 mm² / AWG 26–12) |
| Nominal Current (In) | 24 A continuous (maximum 32 A with 4 mm² conductor) |
| Nominal Voltage (Un) | 1,000 V AC/DC according to IEC 60947-7-1 (600 V UL/CSA) |
| Connection Technology | Screw clamp with integrated Reakdyn groove locking against loosening |
| Bridging System | FBS plug-in dual bridge shafts for flexible potential distribution |
| Housing Material | Flammability-rated Polyamide PA 6.6 (UL 94 V-0, halogen-free) |
| Dimensions (W / L / H) | 5.2 mm / 47.7 mm / 47.5 mm (on standard NS 35/7.5 DIN rail) |
| Explosion Protection | ATEX / IECEx certified for increased safety Ex eb II Mb/Gb zones |
Industrial Applications and Process Integration
The Phoenix Contact UT 2.5 Terminal is widely deployed across primary utility networks, heavy industrial complexes, and civil infrastructure, including:
- Industrial automation control panels and PLC wiring marshaling cabinets.
- Motor control centers (MCC) and low-voltage electrical distribution boards.
- Process instrumentation junction boxes and hazardous area field enclosures.
- Renewable photovoltaic combiner boxes and commercial HVAC electrical panels.
Frequently Asked Questions
What is the Reakdyn principle on Phoenix Contact UT screw terminals?
The Reakdyn groove is an integrated mechanical spring locking feature inside the clamping yoke that prevents terminal screws from backing out under heavy machine vibration.
Can flexible stranded wires be inserted without wire ferrules?
Yes, the precision copper clamping yoke clamps bare stranded conductors securely, though wire ferrules are recommended for optimal installation neatness.
How does the dual bridge shaft simplify marshaling wiring?
Two independent continuous bridging shafts allow simultaneous chain bridging and component bridging (e.g., diodes or fuses) without consuming wire terminals.
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