Siemens SENTRON 5SY6520-8CC miniature circuit breaker, D-characteristic, 20 A rated, 6 kA breaking capacity, 2-pole 1P+N, 36 mm wide.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Number of poles | 2 |
| Pole design | 1P+N |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Fastening method | Quick assembly system |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 36 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Modular width units | 2 |
| Torque, min. | -40 °C |
| Torque, max. | 75 °C |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| IP protection class | IP20, with connected conductors |
| Pollution degree | 3 |
| Halogen-free | Yes |
| Silicone-free | Yes |
It's a 2-pole unit wired as 1P+N — the neutral pole switches with the line, which matters when you need isolation on both sides of the load without a separate disconnect.
Full rating holds at 35 °C ambient. At 40 °C it derates to 18.8 A, at 50 °C to 17.52 A, and at 55 °C to 16.84 A.
Sealable per the spec, so a panel builder can lock the toggle position with a seal wire. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.
The breaking capacity is 6 kA per EN 60898 at AC. That's the standard residential and light-commercial fault level — adequate for most panelboards fed by a transformer up to about 200 kVA, but verify against the prospective short-circuit current at the installation point.
The D tripping characteristic means the magnetic trip activates at 5 to 10 times the rated current (100–200 A for this 20 A unit). It's designed for loads with high inrush — motor starters, small transformers, discharge lighting — where a B or C curve would trip on the startup surge.
The 5SY6520-8CC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
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