5SY7303-8MA
Product ID:139869
Updated: 2026/7/3

Key Features
- 1Deliver robust 15kA protection against electrical surges.
- 2Ensure easy installation in tight spaces with a 70mm diameter.
- 3Protect three-phase electrical systems reliably.
- 4Benefit from Siemens' trusted Basic product line quality.
- 5Withstand harsh industrial environments for long-term operation.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Installation Module | 3 | Specification | 5SY7【0.3-63A】 |
| Number of Poles | 3P | Trip Unit | MA【Single Magnetic】 |
| Breaking Capacity Icu(kA) per IEC60947 Standard | 30 | Rated Current In(A) | 3 |
| Lifecycle | Delivery Release (PM300) | Country of Origin | China |
| ECCN | N | AL | N |
| Model Number | 5SY7303-8MA |
Specifications may be subject to change without notice
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