Phoenix FB Series Terminal Blocks Selection Guide
Phoenix FB series products cover multiple sub-series including FBRNI/FBRN/FBRI (marked neutral/power terminals), FBP (multi-pole combined terminals), FBI (basic functional terminals) and FB (marked/standard terminals). They are designed for low-medium power signal and power circuit connection, with pole counts ranging from 2 to 100 poles, and support neutral line identification, multi-pole integration, and circuit marking functions. Widely used in industrial control cabinets, power distribution systems, and automation equipment for standardized circuit management.
1. Core Model Classification & Product Descriptions
The series is categorized by sub-series characteristics for clear matching of application needs, with key parameters including pole count, neutral line marking, and current specification:
1.1 FBRNI/FBRN/FBRI Series (Neutral Line Marked Terminals)
Featured with N marking for neutral line identification in AC systems, suitable for distinguishing neutral and live lines in complex circuits.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 3000609 | FBRNI 20-5 N | 20-pole, neutral line marked, 5A rated current | Multi-channel AC system neutral line connection |
| 3000159 | FBRNI 4-5 N | 4-pole, neutral line marked, 5A | Small-channel equipment neutral line wiring |
| 2770639 | FBRNI 10-5 N | 10-pole, neutral line marked, 5A | Medium-channel control system neutral line connection |
| 3006823 | FBRI 40-5 N | 40-pole, neutral line marked, 5A | Ultra-high-density AC system neutral line wiring |
| 2772080 | FBRI 10-8N | 10-pole, neutral line marked, 8A | Medium-power 10-channel neutral line connection |
| 2774185 | FBRNI 10-6 | 10-pole, 6A, no neutral marking | Medium-channel power circuit connection |
1.2 FBP Series (Multi-pole Combined Terminals)
Adopt X+1 pole combination design, integrating multiple poles into a compact structure to save cabinet space.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 3069407 | FBP 8+1 | 8+1 pole combination, high integration | High-density small-signal circuit grouping connection |
| 3069406 | FBP 6+1 | 6+1 pole combination | Medium-density control circuit integration |
| 3069405 | FBP 4+1 | 4+1 pole combination | Small-channel equipment circuit grouping wiring |
1.3 FBI Series (Basic Functional Terminals)
Full-spec coverage with pole counts from 2 to 100 poles, suitable for general-purpose signal and power circuit connection.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 0201650 | FBI 100- 6 | 100-pole, 6A rated current | Ultra-high-density large-scale control system wiring |
| 3213205 | FBI 3-20 N | 3-pole, 20A, neutral marked | High-power 3-channel neutral line connection |
| 0203425 | FBI 3-6 | 3-pole, 6A | Small-channel low-power signal circuit connection |
| 5772582 | FBI 5-8 | 5-pole, 8A | Medium-channel control circuit connection |
1.4 FB Series (Marked/Standard Terminals)
Includes RTK/S marking models for circuit labeling, and basic models for general-purpose wiring.
| Product Code | Model | Key Features | Application Scenarios |
|---|---|---|---|
| 0311171 | FB 10-RTK/S | 10-pole, RTK/S marking function | Circuit identification in complex control systems |
| 0201281 | FB 10- 6-EX | 10-pole, 6A, EX enhanced insulation | High-safety 10-channel control circuit connection |
| 0202219 | FB 10-12 | 10-pole, 12A | Medium-power 10-channel circuit wiring |
| 5772621 | FB 2-RTK/S | 2-pole, RTK/S marking | Dual-channel signal circuit identification |
2. Quick Interpretation of Model Naming Rules
The naming logic of the FB series is concise and standardized, with each segment corresponding to clear product parameters:
| Naming Segment | Meaning | Explanation |
|---|---|---|
| FBRNI/FBRN/FBRI/FBP/FBI/FB | Sub-series Identifier | - FBRNI/FBRN/FBRI: Neutral line marked terminals (N suffix = neutral line identification)- FBP: X+1 multi-pole combined terminals- FBI: Basic functional terminals (wide pole count coverage)- FB: Marked/standard terminals (RTK/S = circuit marking function) |
| X (2/3/4/10/20/40/100) | Pole Count | Number of connection poles, higher numbers mean higher wiring density |
| -Y (5/6/8/12/15/20) | Rated Current Specification | Represents the maximum current that the terminal block can support, e.g., -5 = 5A, -20 = 20A |
| -N | Neutral Line Marking | Identifies neutral line connection in AC systems, facilitating circuit distinction |
| -RTK/S | Marking Function | Supports circuit labeling, improving maintenance efficiency in complex systems |
| -EX | Enhanced Insulation | EX-grade insulation, suitable for high-safety application scenarios |
| X+1 | Combination Pole Count | FBP series exclusive, e.g., 8+1 = 8 functional poles + 1 auxiliary pole |
3. Core Advantages of FB Series Products
- Wide Pole Count CoverageCovers 2–100 poles, from small-channel equipment internal wiring to ultra-high-density large-scale control system connection, with strong versatility.
- Clear Neutral Line IdentificationN-suffix models realize visual distinction between neutral and live lines in AC systems, reducing maintenance errors in complex circuits.
- High Integration & Space SavingFBP series X+1 multi-pole combination design reduces the number of independent terminals, saving cabinet installation space.
- Diversified Functional ExpansionRTK/S marking models facilitate circuit labeling; EX enhanced insulation models meet high-safety requirements; full current range covers low-power signals to medium-power circuits.
4. Product Selection Suggestions
- Select by Pole Count & Wiring Density
- For ultra-high-density large-scale systems (40–100 poles): Choose FBRI 40-5 N, FBI 100-6 models.
- For medium-channel control circuits (10–20 poles): Select FBRNI 20-5 N, FB 10-RTK/S models.
- For small-channel equipment internal wiring (2–4 poles): Adopt FBRNI 4-5 N, FB 2-RTK/S models.
- For high-integration scenarios: Use FBP 4+1/6+1/8+1 multi-pole combined models.
- Select by Neutral Line & Identification Needs
- For AC system neutral line connection: Prioritize N-suffix models (e.g., FBRNI 10-5 N, FBRI 40-5 N).
- For circuit labeling in complex systems: Choose RTK/S marking models (e.g., FB 10-RTK/S, FB 2-RTK/S).
- Select by Current & Safety Requirements
- For high-power circuits (12–20A): Select FBI 3-20 N, FB 10-12 models.
- For low-power signal circuits (5–8A): Use FBRNI 4-5 N, FBI 5-8 models.
- For high-safety scenarios: Adopt FB 10-6-EX enhanced insulation models.
Phoenix FB Series Terminal Blocks Selection Guide
