Siemens SENTRON 5SN6 series, miniature circuit breaker, 3-pole, D tripping characteristic, 63 A rated current, 6 kA breaking capacity, 400 V AC.
| Parameter | Value |
|---|---|
| Design / model code | 5SN6CN |
| Brand name | SENTRON |
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | D |
| Breaking capacity per EN 60898 | 6 kA |
| Overvoltage category | 3 |
| IP protection class | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Rated voltage (AC, multi-phase) | 440 V |
| Rated frequency | 50 Hz |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of surrounding temperature | Periodically +55°C, max. 95% humidity |
Terminal range accepts 0.75 to 25 mm² solid or stranded — covers feed-through from a 25 mm² main tail down to 0.75 mm² branch circuits. Screw terminals with 2.5–3 N·m torque. Mounting position any, so vertical or horizontal busbar layouts work.
Halogen-free and silicon-free construction. IP20 with connected conductors. Ambient temperature range -40 to +75 °C; derated operating range -25 to +45 °C. Overvoltage category III. Touch protection fitted.
6 kA rated breaking capacity per EN 60898 at 400 V AC. This covers standard fault levels in residential and light commercial distribution boards.
The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here.
Both are 3-pole MCBs on a 54 mm DIN-rail footprint, but the 5SL4120-7CC is a 20 A B-curve device; the 5SN6363-8CN is a 63 A D-curve. The physical fit is the same, but the electrical ratings differ significantly — verify the circuit's load and fault requirements before substituting.
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