Phoenix USLKG/USK/USIG/USEN/URTK/URELG Series Terminal Blocks Selection Guide
Phoenix this batch of terminal blocks covers six sub-series: USLKG (large-current main circuit terminals), USK (basic small-spec terminals), USIG (functional auxiliary terminals), USEN (neutral line marked terminals), URTK (color-coded identification terminals) and URELG (PMTK marked terminals). They cover wire cross-sections from small-spec to 95mm² high-current, integrate neutral line identification, color coding, and marking functions, and are widely used in industrial power distribution cabinets, control systems, and high-power equipment circuit connection.
1. Core Model List (With Product Descriptions)
| Series | Product Code | Product Model | Product Description |
|---|---|---|---|
| USLKG Series (Large-current Terminals, 1.5mm²–95mm²) | |||
| 0441041 | USLKG 95 | 95mm² ultra-high current terminal, for heavy-duty industrial equipment main circuit connection | |
| 0443049 | USLKG 50 | 50mm² high-current terminal, for medium-high power distribution circuit wiring | |
| 0444019 | USLKG 35 | 35mm² high-current terminal, general-purpose for heavy-power control system main circuit | |
| 0443023 | USLKG 16 N | 16mm² neutral (N) line terminal, dedicated to AC system neutral line connection with identification | |
| 0443010 | USLKG 16 | 16mm² medium-current terminal, for medium-power equipment control circuit connection | |
| 0442011 | USLKG10 | 10mm² medium-current terminal, general-purpose for industrial control panel power circuit | |
| 3003923 | USLKG 10 N | 10mm² neutral line terminal, for AC system medium-power neutral line wiring | |
| 0441025 | USLKG 2,5 | 2.5mm² low-current terminal, for low-power signal/power mixed circuit connection | |
| 0441119 | USLKG 2,5 N | 2.5mm² neutral line terminal, for AC system low-power neutral line identification | |
| 0441083 | USLKG 3 | 3mm² low-current terminal, for micro-signal circuit connection in compact equipment | |
| 3000611 | USLKG 3N | 3mm² neutral line terminal, for micro-signal circuit neutral line connection | |
| 0441504 | USLKG 5 | 5mm² low-medium current terminal, for small-power control circuit wiring | |
| 0441517 | USLKG 5-1 | 5mm² single-channel enhanced terminal, for independent small-power circuit connection | |
| 0442079 | USLKG 6 N | 6mm² neutral line terminal, for medium-power AC system neutral line identification | |
| 2798789 | USLKG 4 BK/BK | 4mm² double-black shell terminal, corrosion-resistant for harsh environment low-power circuit connection | |
| 0441012 | USLKG 4 | 4mm² low-current terminal, general-purpose for industrial sensor signal circuit | |
| 3005853 | USLKG 1,5 N | 1.5mm² neutral line terminal, for micro-signal circuit neutral line connection | |
| USK/USIG/USEN Series (Basic & Functional Terminals) | |||
| 0260015 | USK 4 | 4mm² basic small-spec terminal, for compact equipment internal low-power circuit connection | |
| 0920083 | USIG | Universal functional auxiliary terminal, for signal transmission between main circuit terminals | |
| 5022106 | USIG MIT ST-SI | USIG terminal with ST-SI locking structure, for stable connection in vibration environments | |
| 3048360 | USEN 18 N | 18mm² neutral line marked terminal, for medium-high power AC system neutral line identification | |
| 3048357 | USEN 14 N | 14mm² neutral line marked terminal, for medium-power AC system neutral line connection | |
| URTK Series (Color-coded Identification Terminals) | |||
| 0311087 | URTK/S | Basic URTK/S terminal, for general circuit labeling and identification | |
| 0309086 | URTK/S-BEN | URTK/S terminal with BEN marking function, for detailed circuit parameter labeling | |
| 0309109 | URTK/S-BEN 10 | 10mm² URTK/S terminal with BEN marking, for medium-current circuit detailed identification | |
| 0311812 | URTK/S RD | Red shell URTK/S terminal, for high-voltage/power circuit identification in complex systems | |
| 0719333 | URTK/S YE | Yellow shell URTK/S terminal, for grounding/protection circuit identification | |
| 3070118 | URTK/S GN | Green shell URTK/S terminal, for signal circuit identification | |
| 0311126 | URTK/SP | URTK terminal with SP shielding function, for anti-interference signal circuit connection | |
| 0712411 | URTKK 6-C | 6mm² URTKK terminal with C-type coding, for high-speed signal transmission circuit | |
| 3026272 | URTK 6 | 6mm² basic URTK terminal, for medium-power circuit labeling | |
| URELG Series (PMTK Marked Terminals) | |||
| 2820178 | URELG 7 | 7mm² basic URELG terminal, for medium-power control circuit connection | |
| 2820725 | URELG 7-PMTK | 7mm² URELG terminal with PMTK marking function, for medium-power circuit detailed parameter labeling | |
| 2820149 | URELG 4 | 4mm² low-current URELG terminal, for low-power signal circuit connection | |
| 2820712 | URELG 4-PMTK | 4mm² URELG terminal with PMTK marking, for low-power signal circuit identification | |
| 2820136 | URELG 3 | 3mm² micro-current URELG terminal, for compact equipment internal signal circuit | |
| 2820262 | URELG 2 | 2mm² ultra-small current URELG terminal, for micro-device signal transmission | |
| 2820835 | URELG 2-PMTK | 2mm² URELG terminal with PMTK marking, for micro-signal circuit detailed labeling |
2. Quick Interpretation of Model Naming Rules
| Naming Segment | Meaning | Explanation |
|---|---|---|
| USLKG/USK/USIG/USEN/URTK/URELG | Series Identifier | - USLKG: Large-current terminal series (covers 1.5mm²–95mm², supports neutral line marking)- USK: Basic small-spec terminal series- USIG: Functional auxiliary terminal series- USEN: Neutral line dedicated marked terminal series- URTK: Color-coded identification terminal series- URELG: PMTK marked terminal series |
| X (2/3/4/5/6/10/16/35/50/95) | Wire Cross-section | Compatible wire size (mm²), determines current-carrying capacity (larger X = higher current) |
| -N/3N | Neutral Line Marking | Identifies neutral line connection in AC systems, avoids confusion between live and neutral lines |
| -BK/BK | Shell Color | Double-black shell, corrosion-resistant for harsh industrial environments |
| -S/-SP/-C | Functional Suffix | - S: Basic marking function- SP: Shielding function, anti-interference for signal circuits- C: C-type coding, for high-speed signal transmission |
| -RD/-YE/-GN | Color Coding | - RD = Red (power/high-voltage circuit identification)- YE = Yellow (grounding/protection circuit identification)- GN = Green (signal circuit identification) |
| -PMTK | Marking Function | Supports detailed circuit parameter labeling, improves maintenance efficiency in complex systems |
| -BEN | Extended Marking | Supports additional text/parameter marking, for customized circuit identification |
3. Core Advantages of This Batch of Products
- Ultra-wide Current Range CoverageUSLKG series covers 1.5mm² micro-signal to 95mm² ultra-high current, meeting the connection needs of low-power signal circuits, medium-power control circuits, and high-power main circuits.
- Diversified Identification FunctionsNeutral line marking (-N), color coding (RD/YE/GN), and PMTK/BEN extended marking realize multi-level circuit identification, reducing maintenance errors in complex systems.
- Strong Environmental AdaptabilityDouble-black shell (BK/BK) models are corrosion-resistant; URTK/SP shielding models are anti-interference, adapting to harsh industrial sites such as high-vibration and high-electromagnetic noise.
- Rich Functional ExpansionAuxiliary terminals such as USIG realize signal transmission between main circuits; coded terminals such as URTKK 6-C support high-speed signal transmission, with strong versatility.
4. Product Selection Suggestions
- Select by Current & Wire Spec Requirements
- For ultra-high power main circuits (35mm²–95mm²): Choose USLKG 35/50/95 models (e.g., 0441041, 0443049).
- For medium-power control circuits (6mm²–16mm²): Select USLKG 6 N/10/16 models (e.g., 0442079, 0443010).
- For low-power signal circuits (1.5mm²–5mm²): Adopt USLKG 2.5/4/5 models (e.g., 0441025, 0441012).
- For compact equipment internal wiring: Use USK 4/URELG 2 models (e.g., 0260015, 2820262).
- Select by Identification & Functional Requirements
- For AC system neutral line connection: Prioritize -N suffix models (e.g., USLKG 2.5 N, 3003923).
- For circuit classification in complex systems: Choose URTK color-coded models (RD for power, YE for grounding, GN for signal, e.g., 0311812, 3070118).
- For detailed circuit parameter labeling: Use URELG-PMTK/URTK/S-BEN models (e.g., 2820725, 0309109).
- For anti-interference signal circuits: Select URTK/SP shielding models (0311126).
- Select by Application Environment
- For harsh corrosion-prone environments: Use USLKG 4 BK/BK double-black shell models (2798789).
- For vibration-prone equipment: Choose USIG MIT ST-SI models with locking structure (5022106).
Phoenix USLKG/USK/USIG/USEN/URTK/URELG Series Terminal Blocks Selection Guide
Created on：2026-01-22 09:23
