Phoenix FBS Series Fuse Terminal Blocks Selection Guide
Phoenix FBS series products are compact fuse terminal blocks, designed for overcurrent protection in low-medium power industrial control circuits. The series covers 2/3/4/10/20 pole count specifications, with optional color coding (BU=blue, GY=gray) and CT enhanced locking structures, compatible with diverse fuse sizes. It is widely used in automation control panels, power distribution cabinets, and electrical equipment for circuit safety protection.
1. Core Model Classification & Product Descriptions
The series is categorized by pole count for clear identification, with key parameters including pole number, fuse size, and color/structural features:
1.1 2-pole Models (Basic Low-channel Protection)
| Product Code |
Model |
Key Features |
Application Scenarios |
| 3005963 |
FBS 2-16 |
2-pole, 16A rated current |
Medium-power dual-channel circuit protection |
| 3036932 |
FBS 2-6 BU |
2-pole, 6A, blue color-coded |
Signal circuit overcurrent protection with visual identification |
| 3033830 |
FBS 2-8 CT |
2-pole, 8A, CT enhanced locking |
Vibration-prone equipment dual-channel protection |
| 3213014 |
FBS 2-3,5 |
2-pole, 3.5A |
Low-power micro-signal circuit protection |
1.2 3/4-pole Models (Small-medium Density Protection)
| Product Code |
Model |
Key Features |
Application Scenarios |
| 3030297 |
FBS 3-8 |
3-pole, 8A |
Three-channel control circuit protection |
| 3036945 |
FBS 3-6 BU |
3-pole, 6A, blue color-coded |
Signal circuit group protection |
| 3030307 |
FBS 4-8 |
4-pole, 8A |
Four-channel equipment control circuit protection |
| 3032279 |
FBS 4-6 GY |
4-pole, 6A, gray color-coded |
Power circuit group protection with classification |
1.3 10/20-pole Models (High-density Multi-channel Protection)
| Product Code |
Model |
Key Features |
Application Scenarios |
| 3030323 |
FBS 10-8 |
10-pole, 8A |
High-density control panel multi-channel protection |
| 3036916 |
FBS 10-5 BU |
10-pole, 5A, blue color-coded |
Large-group signal circuit overcurrent protection |
| 3030365 |
FBS 20-6 |
20-pole, 6A |
Ultra-high density automation equipment circuit protection |
| 3213138 |
FBS 20-3,5 BU |
20-pole, 3.5A, blue color-coded |
Mass micro-signal circuit group protection |
1.4 Special Small-spec Models
| Product Code |
Model |
Key Features |
Application Scenarios |
| 3032525 |
FBS 1/5-6 |
1-pole (split type), 6A |
Single-channel independent circuit protection |
| 3030188 |
FBS 1/4-5 |
1-pole (split type), 5A |
Micro-equipment single-circuit protection |
2. Quick Interpretation of Model Naming Rules
The naming logic of the FBS series is concise and standardized, with each segment corresponding to clear product parameters:
| Naming Segment |
Meaning |
Explanation |
| FBS |
Series identifier |
Fuse terminal block for industrial circuit protection |
| X (2/3/4/10/20) |
Pole count |
Number of parallel protection channels; higher numbers mean higher wiring density |
| -Y (3,5/4/5/6/8/10/12/16) |
Rated current specification |
Represents the maximum current that the terminal block can support, e.g., -6 = 6A, -16 = 16A |
| -BU/-GY |
Color coding |
- BU = Blue, for signal circuit identification- GY = Gray, for power circuit identification |
| -CT |
Structural enhancement |
CT enhanced locking structure, prevents fuse loosening in vibration environments |
| 1/5-6/1/4-5 |
Split single-pole spec |
1-pole independent terminal block, matched with specific small-size fuses |
3. Core Advantages of FBS Series Products
- Diverse Pole Count CoverageFrom 1-pole split type to 20-pole high-density type, it meets the protection needs of single-circuit, small-group, and large-scale multi-channel circuits.
- Clear Color ClassificationBlue (signal) and gray (power) color-coded models realize visual circuit classification, reducing maintenance errors in complex control panels.
- Enhanced Structural ReliabilityCT locking models adapt to vibration-prone industrial sites, ensuring stable fuse installation and avoiding poor contact caused by equipment shaking.
- High CompatibilityMatches mainstream industrial fuse sizes, with different current specifications covering low-power signals to medium-power circuits.
4. Product Selection Suggestions
- Select by Pole Count & Wiring Density
- For single-circuit/independent equipment protection: Choose 1-pole split models (e.g., 3032525, 3030188).
- For small-group control circuits (2–4 channels): Select 2/3/4-pole basic models (e.g., 3030284, 3030307).
- For high-density control panels (10+ channels): Adopt 10/20-pole high-density models (e.g., 3030323, 3030365).
- Select by Color & Structural Requirements
- For signal/power circuit classification: Use blue (BU) and gray (GY) color-coded models respectively (e.g., 3036932, 3032279).
- For vibration-prone equipment (e.g., motors, conveyors): Prioritize CT enhanced locking models (e.g., 3033830, 3033833).
- Select by Rated Current
- For low-power micro-signal circuits: Choose 3.5A/4A models (e.g., 3213014, 3030116).
- For medium-power control circuits: Select 6A/8A models (e.g., 3030255, 3030297).
- For high-power branch circuits: Use 10A/16A models (e.g., 3005947, 3005963).
