Phoenix TB Series Terminal Blocks Product Selection Guide
Phoenix TB series terminal blocks are industrial-grade wiring components designed for reliable connection and functional expansion of control circuits, covering wire cross-sections from 2.5mm² to 35mm². The series integrates diverse functions such as fuse protection, LED status indication, grounding (PE), anti-interference (EC), and multi-circuit integration, with protection and performance optimization for different industrial scenarios. They are widely used in control cabinets, automation equipment, and power distribution systems.
1. Core Model List (With Product Descriptions)
| Product Code | Product Model | Product Description |
|---|---|---|
| 35mm² Large-current Terminal Blocks | ||
| 3233036 | TB 35 EC | 35mm² terminal block with EC anti-interference design, suppresses electromagnetic interference, suitable for high-power main circuit wiring in high-interference industrial environments |
| 3233094 | TB 35-PE EC | 35mm² terminal block with PE grounding + EC anti-interference functions, enhances electrical safety and signal stability of high-power circuits |
| 16mm² Medium-current Terminal Blocks | ||
| 3233049 | TB 16 EC | 16mm² EC anti-interference terminal block, for medium-power distribution circuit wiring in environments with high electromagnetic noise |
| 3233081 | TB 16-PE EC | 16mm² PE grounding + EC anti-interference terminal block, ideal for medium-power circuit grounding protection and anti-interference needs |
| 10mm² Medium-current Terminal Blocks | ||
| 3074321 | TB 10 EC | 10mm² EC anti-interference terminal block, suitable for medium-power control circuit wiring (e.g., motor auxiliary circuits) |
| 3074363 | TB 10-PE EC | 10mm² PE grounding + EC anti-interference terminal block, improves safety and anti-interference capability of medium-power control systems |
| 6mm² Terminal Blocks | ||
| 3000486 | TB 6 I | 6mm² basic terminal block with I-type insulation enhancement, general-purpose for 6mm² wire control circuit connection |
| 3057681 | TB 6 I BU | 6mm² blue (BU) color-coded I-type terminal block, for signal circuit identification in complex control systems |
| 3074318 | TB 6 EC | 6mm² EC anti-interference terminal block, suppresses electromagnetic interference for precision control signal transmission |
| 3059870 | TB 6-PE I | 6mm² PE grounding + I-type insulation terminal block, for 6mm² wire grounding circuit protection |
| 3074350 | TB 6-PE EC | 6mm² PE grounding + EC anti-interference terminal block, integrates safety protection and anti-interference functions |
| 3001605 | TB 6-RTK N | 6mm² neutral (N) terminal block with RTK marking function, easy circuit labeling for AC system neutral wire connection |
| 4mm² Terminal Blocks (With Fuse & LED Functions) | ||
| 3246418 | TB 4-HESI (5X20) I | 4mm² fuse terminal block compatible with 5×20mm fuses, I-type insulation, basic overcurrent protection for 4mm² control circuits |
| 3246450 | TB 4-HESILA 250 (5X20) I | 4mm² fuse terminal block, 250VAC rated voltage, 5×20mm fuse compatible, I-type insulation, for low-power AC circuit protection |
| 3246434 | TB 4-HESILED 24 (5X20) I | 4mm² fuse terminal block with 24VDC LED status indicator, 5×20mm fuse compatible, visualizes fuse working status for quick fault diagnosis |
| 3246447 | TB 4-HESILED 60 (5X20) I | 4mm² fuse terminal block with 60VDC LED indicator, 5×20mm fuse compatible, for higher-voltage DC control circuit protection |
| 3246847 | TB 4-2L-HESI (5X20) I | 4mm² 2-circuit integrated fuse terminal block, 5×20mm fuse compatible, I-type insulation, saves cabinet space for dual-circuit protection |
| 3246854 | TB 4-2L-HESILED 24 (5X20) I | 4mm² 2-circuit fuse terminal block with 24VDC LED indicator, 5×20mm fuse compatible, dual-circuit protection with status visualization |
| 3246544 | TB 4-2L I | 4mm² 2-circuit integrated terminal block, I-type insulation, high-density wiring for dual 4mm² control circuits |
| 3000607 | TB 4-MT N I | 4mm² neutral terminal block with MT marking function, I-type insulation, easy labeling of neutral circuits |
| 3246405 | TB 4-MT-P/P I | 4mm² terminal block with MT marking + double P-type derived ports, I-type insulation, supports signal extraction and branch wiring |
| 3074208 | TB 4 EC | 4mm² EC anti-interference terminal block, for 4mm² precision signal circuit transmission in high-interference environments |
| 3074347 | TB 4-PE EC | 4mm² PE grounding + EC anti-interference terminal block, protects low-power signal circuits from interference and electrical hazards |
| 2.5mm² Terminal Blocks (Basic & Multi-circuit Types) | ||
| 3246311 | TB 2,5 I | 2.5mm² basic I-type insulation terminal block, general-purpose for 2.5mm² low-power control/signal circuit wiring |
| 3074198 | TB 2,5 EC | 2.5mm² EC anti-interference terminal block, for 2.5mm² precision sensor signal transmission |
| 3059841 | TB 2,5-PE I | 2.5mm² PE grounding + I-type insulation terminal block, for 2.5mm² wire grounding circuit protection |
| 3074334 | TB 2,5-PE EC | 2.5mm² PE grounding + EC anti-interference terminal block, integrates safety and anti-interference for low-power signal circuits |
| 3059773 | TB 2,5 B I | 2.5mm² basic (B) compact I-type terminal block, for narrow-space 2.5mm² circuit wiring |
| 3059854 | TB 2,5 B-PE I | 2.5mm² B-type compact terminal block with PE grounding, I-type insulation, space-saving grounding protection for small circuits |
| 3246492 | TB 2,5-QUATTRO I | 2.5mm² 4-circuit integrated terminal block, I-type insulation, high-density wiring for multi-channel low-power signal circuits |
| Special Structure Terminal Block | ||
| 3246812 | TB2.5-L/L/TGI | 2.5mm² terminal block with L/L dual-circuit + TGI test-point function, supports on-site circuit testing without wire disconnection |
| 3059786 | TB 3 I | 3mm² basic I-type insulation terminal block, for 3mm² low-power control circuit connection |
2. Quick Interpretation of Model Naming Rules
| Naming Segment | Meaning | Explanation |
|---|---|---|
| TB X | Series & Wire Spec | TB = Phoenix TB series terminal block; X = compatible wire cross-section (mm²), e.g., 35 = 35mm², 2.5 = 2.5mm² |
| -I | Insulation Grade | I-type enhanced insulation, improves safety and anti-leakage performance for control circuits |
| -EC | Anti-interference Function | EC anti-interference design, suppresses electromagnetic interference (EMI) for precision signal transmission |
| -PE | Grounding Function | PE protective grounding, connects to equipment ground wire to enhance electrical safety |
| -HESI/-HESILED | Fuse & Indicator Function | - HESI: Basic fuse terminal block (compatible with 5×20mm fuses)- HESILED: Fuse terminal block with LED status indicator (24VDC/60VDC options) |
| -2L/-QUATTRO | Circuit Integration | - 2L: 2-circuit integrated structure, saves cabinet space- QUATTRO: 4-circuit integrated structure, high-density multi-channel wiring |
| -MT/-RTK | Marking Function | - MT: Integrated marking slot, easy circuit labeling- RTK: Special marking design for neutral/grounding circuit identification |
| -BU | Color Coding | BU = Blue color, for signal circuit identification in complex wiring systems |
| -(5X20) | Fuse Compatibility | Specifies compatible fuse size (5×20mm), for overcurrent protection terminal blocks |
3. Core Advantages of TB Series Products
- Wide Wire Spec CoverageSupports wire cross-sections from 2.5mm² to 35mm², covering low-power signal circuits, medium-power control circuits, and high-power main circuits, with strong versatility.
- Diversified Functional IntegrationIntegrates fuse protection, LED status indication, grounding, anti-interference, and multi-circuit integration functions, eliminating the need for separate accessories and saving cabinet space.
- Scenario-oriented Design Optimization
- EC anti-interference models adapt to high-electromagnetic-noise environments;
- LED indicator models enable quick fault location;
- Multi-circuit integrated models meet high-density wiring requirements.
- Reliable Insulation & Safety PerformanceI-type enhanced insulation and PE grounding functions ensure safe operation of circuits, preventing electric leakage and short-circuit risks.
4. Product Selection Suggestions
- Select by Wire Cross-section
- For low-power signal circuits (2.5mm²/3mm²): Choose TB 2.5/TB 3 series models (e.g., 3246311, 3059786).
- For control circuits (4mm²/6mm²): Select TB 4/TB 6 series models; prioritize fuse/LED models (e.g., 3246434) for circuits requiring overcurrent protection.
- For medium-high power circuits (10mm²/16mm²/35mm²): Adopt TB 10/TB 16/TB 35 series; choose EC anti-interference models (e.g., 3233036) for high-noise environments.
- Select by Functional Requirements
- For overcurrent protection: Choose -HESI/-HESILED suffix models (e.g., 3246434, 3246854) compatible with 5×20mm fuses.
- For precision signal anti-interference: Select -EC suffix models (e.g., 3074198, 3233094).
- For grounding protection: Use -PE suffix models (e.g., 3059841, 3074363).
- For high-density wiring: Adopt -2L/-QUATTRO multi-circuit models (e.g., 3246544, 3246492).
- Select by Maintenance Requirements
- For quick fault diagnosis: Choose -HESILED LED indicator models (e.g., 3246434, 3246854).
- For easy circuit labeling: Select -MT/-RTK marking function models (e.g., 3000607, 3001605).
Phoenix TB Series Terminal Blocks Product Selection Guide
Created on：2026-01-19 08:55
