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Siemens 5SY4463-5 — 4-Pole MCB (DIN Rail)

Siemens 5SY4463-5 4-Pole MCB, A-Curve, 63 A, 10/15 kA

MPN5SY4463-5

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Siemens SENTRON 5SY4463-5, 4-pole miniature circuit breaker, A-curve, 63 A rated current at 35 °C, 10 kA breaking capacity per EN 60898, 15 kA per IEC 60947-2, 4 MW units, DIN rail mount.

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Siemens 5SY4463-5 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4463-5 — Identification
Parameter	Value
Brand name	SENTRON
Application suitability	Mechanical engineering / industry

5SY4463-5 — Ratings
Parameter	Value
Number of poles	4
Pole configuration	4P
Rated current (In), AC	400 V
Rated voltage, AC (multi-phase)	440 V
Rated voltage, AC (single-phase)	440 V
Voltage type	AC

5SY4463-5 — Protection
Parameter	Value
Tripping characteristic (trip curve)	A
Rated breaking capacity (Icn), per EN 60898	10 kA
Rated breaking capacity, per IEC 60947-2	15 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)	5 kA
Overvoltage category	III
Pollution degree	3
Degree of protection (IP)	IP20, with connected conductors
Neutral conductor switching	No
Touch protection	Yes

5SY4463-5 — Mechanical
Parameter	Value
Width in modular units	4
Width	72 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Fastening / mounting method	Quick assembly system
Mounting position	any
Combined terminal, top	Yes
Combined terminal, bottom	Yes
Tightening torque, max.	75 °C
Tightening torque, min.	-40 °C
Sealable	Yes

5SY4463-5 — Environmental
Parameter	Value
Halogen-free	Yes
Silicone-free	Yes
Influence of ambient temperature (derating)	max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C

5SY4463-5 — Performance
Parameter	Value
Mechanical service life (switching cycles, typ.)	10 000

Product details

The 5SY4463-5: The A-curve tripping characteristic means it responds to low-level overcurrents — the magnetic trip threshold sits around 2–3× In, making it a fit for semiconductor protection or long cable runs where standard C-curve breakers would be too slow to clear a fault. Thermal derating is published per pole: 58.4 A at 45 °C, 56.83 A at 50 °C, 55.12 A at 55 °C, and 53.42 A at 60 °C.

Breaking capacity and fault clearance

For DC circuits, the same 15 kA rating applies per IEC 60947-2.

The quick-assembly fastening system snaps onto the rail without tools. Mounting position is any orientation — no derating needed for horizontal or inverted mounting.