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Siemens 5SL4463-8 — 4-Pole MCB (DIN Rail)

Siemens 5SL4463-8 SENTRON MCB, 4P D 63A, 10kA

MPN5SL4463-8
Active

Siemens SENTRON 5SL4463-8 miniature circuit breaker, 4-pole, D tripping characteristic, 63 A rated current, 10 kA breaking capacity at 400 V AC.

Siemens 5SL4463-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL4463-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityResidential buildings/infrastructure
5SL4463-8 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC63 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, DC (max.)72 V
5SL4463-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity (Icn), per EN 6089810 kA
Rated breaking capacity, per IEC 60947-210 kA
Energy limitation class3
Overvoltage categoryIII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
Touch protectionYes
5SL4463-8 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SL4463-8 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
5SL4463-8 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

The Siemens 5SL4463-8 is a SENTRON miniature circuit breaker — 4-pole, D-curve, 63 A, with a 10 kA breaking capacity at 400 V AC per EN 60898 and IEC 60947-2. Rated 63 A at 30 °C, it derates to 59.67 A at 40 °C and 54.29 A at 55 °C — the thermal curve is baked into the bimetal, so if your panel ambient runs hot, size the upstream protection for the derated value, not the nameplate. The 4-pole design switches all phases plus neutral (no switched neutral component, but the neutral pole is a solid bar on this variant — check the order code if you need a switched neutral).

Mounts in any position on standard DIN rail. At 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep plus 70 mm installation depth behind the panel face), it fits a standard distribution board slot. Sealable per the spec, so a panel builder can lock the toggle position after commissioning.

Frequently asked questions

What is the breaking capacity of 5SL4463-8?

10 kA at 400 V AC, rated per both EN 60898 and IEC 60947-2 — the same figure under both standards, so it coordinates without ambiguity in a distribution board.

What does the D-curve mean for this breaker?

The D tripping characteristic allows magnetic trip at 10–20 times rated current, so it handles high inrush from motors, transformers, or welding equipment without nuisance tripping on startup.

Where can I buy 5SL4463-8 and how is it quoted?

Sourced to order through independent distribution. Submit an RFQ for current pricing and availability — no stock count or price is published here.

Will 5SL4463-8 drop into a panel specified around 5SL3340-7CC without rewiring?

Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is identical. The 5SL3340-7CC is a 40 A C-curve variant; the 5SL4463-8 is 63 A D-curve — verify the load-side protection coordination and cable sizing before swapping.

MPN
5SL4463-8