The Siemens SENTRON 5SL4363-6 is a 3-pole miniature circuit breaker (MCB) rated for 63 A at 400 V AC, with a B tripping characteristic and a 10 kA breaking capacity certified to both EN 60898 and IEC 60947-2. The B-curve trips between 3 and 5 times rated current (roughly 189–315 A for this 63 A unit), making it the right choice for resistive loads and general-purpose lighting circuits where inrush is modest. On a 400 V three-phase supply, the breaker handles line-to-line faults up to 440 V maximum, and the 50/60 Hz rating covers both mains frequencies without derating.
Siemens 5SL4363-6 SENTRON MCB, 3P, B-Curve, 63 A, 10 kA
MPN5SL4363-6
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Siemens SENTRON 5SL4363-6, miniature circuit breaker, 3-pole, B-curve, 63 A, 400 V AC, 10 kA breaking capacity per IEC 60898 / 60947-2.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 3 |
| Pole configuration | 3P |
| Suitability for operation | Residential buildings/infrastructure |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | B |
| Breaking capacity per EN 60898 | 10 kA |
| Breaking capacity per IEC 60947-2 | 10 kA |
| Overvoltage category | III |
| IP protection class | IP20, with connected conductors |
| Energy limitation class | 3 |
| Pollution degree | 2 |
| Parameter | Value |
|---|---|
| Rated voltage (AC, multi-phase) | 440 V |
| Voltage type (AC/DC) | AC |
| Supply frequency range | 50/60 Hz |
| Power loss per pole at rated current (AC, hot) | 5 W |
| Mechanical service life (operating cycles, typ.) | 10 000 |
| Parameter | Value |
|---|---|
| Modular width units | 3 |
| Mounting position | any |
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Terminal tightening torque, max. | 75 °C |
| Terminal tightening torque, min. | -40 °C |
| Sealable | Yes |
| Accepts supplementary devices | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
Product details
Frequently asked questions
What is the breaking capacity of the 5SL4363-6?
The 5SL4363-6 carries a 10 kA breaking capacity under both EN 60898 and IEC 60947-2, so it safely interrupts faults up to 10 000 A.
What is the difference between the 5SL4363-6 and the 5SL4363-7?
The 5SL4363-7 is identical in every dimension, pole count, voltage rating, and breaking capacity — the only difference is the trip characteristic: the -6 is B-curve (3–5× In), the -7 is C-curve (5–10× In). They are physically interchangeable in the same panel.
Where can I buy the 5SL4363-6?
The 5SL4363-6 is sourced and quoted to order against an RFQ through independent distribution. Contact us for current pricing and availability.
MPN
5SL4363-6