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
Active
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.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
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