Phoenix D Series Terminal Blocks Selection Guide
Phoenix D series products cover multiple sub-series including Z-series (identification/auxiliary terminals), UT series (multi-wire high-density terminals), UK series (general-purpose terminals), and functional terminals (URTK/UDK/UHSK). The compatible wire cross-section ranges from 1.5mm² to 16mm², integrating multi-wire connection, color coding, high-voltage resistance, and shielding functions. They are widely used in industrial control cabinets, power distribution systems, and automation equipment for standardized and high-density circuit management.
1. Core Model Classification & Product Descriptions
The series is categorized by structural and functional characteristics for quick matching of application needs, with key parameters including wire cross-section, connection type, and functional attributes:
1.1 Z-series Identification & Auxiliary Terminals
Mainly for circuit labeling, signal branching, and auxiliary connection, with compact structure and clear functional positioning.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 3006603 | D-ZVIOK 1,5 | 1.5mm², identification terminal | Micro-signal circuit labeling and identification |
| 3026353 | D-ZRTK 4 | 4mm², RTK marking terminal | Medium-power circuit parameter labeling |
| 3031050 | D-ZPV 1,5/2,5 (8/1) | Compatible with 1.5/2.5mm² wires, multi-spec adapter | Mixed wire spec circuit auxiliary connection |
| 3002791 | D-ZFK 4 | 4mm², auxiliary branching terminal | 4mm² circuit signal branching |
| 3006593 | D-ZDIK 1,5 | 1.5mm², signal isolation auxiliary terminal | Micro-signal circuit isolation protection |
1.2 UT Series Multi-wire High-density Terminals
Featured with TWIN (dual-wire) and QUATTRO (quad-wire) connection structures, maximizing wiring density in limited cabinet space; supports high-voltage (HV) and 360° shielding (3L) functions.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 3047170 | D-UT 2,5/4-QUATTRO | 2.5mm², 4-pole quad-wire | Ultra-high-density 2.5mm² circuit connection |
| 3047141 | D-UT 2,5/4-TWIN | 2.5mm², 4-pole dual-wire | High-density 2.5mm² circuit parallel wiring |
| 3048852 | D-UT 4-QUATTRO HV | 4mm², quad-wire, high-voltage compatible | High-voltage 4mm² circuit high-density connection |
| 3214314 | D-UT 2,5-3L | 2.5mm², 360° shielding | Anti-interference 2.5mm² signal circuit connection |
| 3047235 | D-UT 2,5/10 BU | 2.5mm², 10-pole, blue color-coded | 10-channel signal circuit identification and wiring |
| 3047206 | D-UT 16 | 16mm², single-wire | Medium-high power 16mm² main circuit connection |
1.3 UK Series General-purpose Terminals
Cost-effective universal terminals, supporting color coding, twin-wire, and return circuit functions, suitable for general industrial control circuit wiring.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 1923050 | D-UK 5-TWIN BU | 5mm², dual-wire, blue color-coded | 5mm² signal circuit dual-wire parallel connection |
| 3002571 | D-UK 3-RETURN BU | 3mm², return circuit, blue color-coded | 3mm² control system return circuit connection |
| 3001103 | D-UK 2,5 BU | 2.5mm², blue color-coded | 2.5mm² signal circuit identification and wiring |
| 3006108 | D-UK 16 BU | 16mm², blue color-coded | 16mm² high-current signal circuit connection |
| 2771104 | D-UKKB 3/5 BU | 3/5mm² compatible, blue color-coded | Mixed 3/5mm² wire spec circuit connection |
1.4 Other Functional Terminals (URTK/UDK/UHSK)
Include marking terminals, relay terminals, and auxiliary expansion terminals, enhancing the versatility of the D series.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 5775024 | D-URTK/S RD | Red color-coded URTK marking terminal | Power circuit labeling and identification |
| 0308029 | D-URTK/S-BEN | URTK terminal with BEN extended marking | Customized circuit parameter labeling |
| 2775197 | D-UDK 4 BU | 4mm², blue color-coded UDK terminal | 4mm² signal circuit multi-functional connection |
| 0704021 | D-UHSK 2000 | UHSK 2000 series auxiliary terminal | Terminal block function expansion and interface conversion |
| 1209091 | DUSPOL EXPERT | Special function terminal | Professional circuit testing and debugging |
2. Quick Interpretation of Model Naming Rules
The naming logic of the D series follows Phoenix's standardized terminal specification, with each segment corresponding to clear product parameters:
| Naming Segment | Meaning | Explanation |
|---|---|---|
| D- | Series Prefix | Phoenix D series terminal block identifier |
| ZVIOK/ZRTK/ZFK/ZDIK | Z-series Sub-type | Identification/auxiliary terminal sub-series, for circuit labeling, branching, isolation |
| UT/UK/UDK/URTK | Main Sub-series | - UT: Multi-wire high-density terminal (TWIN/QUATTRO for multi-wire connection)- UK: General-purpose cost-effective terminal- UDK: Multi-functional terminal- URTK: Color-coded marking terminal |
| X (1.5/2.5/4/5/16) | Wire Cross-section | Compatible wire size (mm²), determines current-carrying capacity |
| /Y (4/10) | Pole Count | Number of connection channels, e.g., /10 = 10-pole |
| -TWIN/-QUATTRO | Connection Type | - TWIN: Dual-wire connection (1 terminal for 2 wires)- QUATTRO: Quad-wire connection (1 terminal for 4 wires) |
| -BU/-RD | Color Coding | - BU = Blue (signal circuit identification)- RD = Red (power circuit identification) |
| -HV/-3L | Functional Suffix | - HV: High-voltage compatible, for high-voltage low-current circuits- 3L: 360° shielding, anti-electromagnetic interference |
| -RETURN/-MSTB | Special Function | - RETURN: Return circuit function, for control system feedback circuits- MSTB: Matching MSTB series terminal block connection |
3. Core Advantages of D Series Products
- High-density Wiring CapabilityUT series TWIN/QUATTRO multi-wire structures reduce the number of independent terminals by 50%–75%, saving cabinet installation space, suitable for high-density control systems.
- Diversified Functional ExpansionIntegrates color coding, high-voltage resistance, shielding, and return circuit functions; Z-series auxiliary terminals realize circuit labeling and branching, eliminating additional external components.
- Strong Compatibility & VersatilityUK series supports mixed wire spec connection (e.g., D-UKKB 3/5 BU); UT series covers 1.5mm²–16mm² wire cross-sections, meeting the needs of micro-signal to medium-high power circuits.
- Clear Circuit IdentificationBlue (signal)/red (power) color-coded models realize visual circuit classification; URTK marking terminals support customized parameter labeling, reducing maintenance errors in complex systems.
4. Product Selection Suggestions
- Select by Wire Cross-section & Current Requirements
- For 1.5mm²–2.5mm² micro-signal circuits: Choose D-ZVIOK 1,5, D-UT 2,5/10 BU models.
- For 4mm²–5mm² medium-power circuits: Select D-ZFK 4, D-UK 5-TWIN BU models.
- For 16mm² medium-high power circuits: Adopt D-UT 16, D-UK 16 BU models.
- Select by Wiring Density & Space Requirements
- For ultra-high-density wiring: Choose UT series TWIN/QUATTRO models (e.g., D-UT 2,5/4-QUATTRO, D-UT 4-QUATTRO HV).
- For standard single-wire connection: Select UK series general-purpose models (e.g., D-UK 2,5 BU, D-UK 3-RETURN).
- Select by Functional Requirements
- For high-voltage circuits: Use UT series HV suffix models (e.g., D-UT 4-QUATTRO HV).
- For anti-interference signal circuits: Prioritize D-UT 2,5-3L with 360° shielding.
- For circuit labeling & identification: Choose ZRTK/URTK marking terminals (e.g., D-ZRTK 4, D-URTK/S RD).
- For control system return circuits: Select D-UK 3-RETURN BU models.
Phoenix D Series Terminal Blocks Selection Guide
