What is the correspondence between the number of cores and the rated current of the M9 connector, and how can it be used to match the power of the equipment?
Core Count & Rated Current Correlation of M9 Connectors & Equipment Power Matching
Core Count - Rated Current Correlation Table (DC 30V)
| Core Count | Rated Current per Core | Applicable Scenario |
|---|---|---|
| 2/3 cores | 5A | High-current small-channel transmission |
| 4/5 cores | 3A | Medium-current multi-channel transmission |
| 6/8 cores | 2A | Low-current multi-channel signal transmission |
Equipment Power Matching Method
Matching Formula
Total Power ≤ Rated Voltage × Rated Current per Core × Effective Core Count (reserve 20% margin)
Note
: All values are rated under DC 30V.
Application Limitation
Only suitable for signal transmission and low-power power supply scenarios, not applicable for high-power load connection to avoid overcurrent damage.
Technical Note: The rated current of M9 connectors decreases with the increase of core count due to space limitation; the 20% margin is reserved to avoid connector overheating caused by instantaneous current surge in actual use.
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