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Siemens 5SY4463-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY4463-8 SENTRON MCB, 4P 63A D-curve

MPN5SY4463-8

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Siemens SENTRON 5SY4463-8, 4-pole 63 A miniature circuit breaker with D tripping characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2).

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Siemens 5SY4463-8 datasheet (PDF)

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

Specifications

5SY4463-8 — Identification
Parameter	Value
Brand name	SENTRON
Application suitability	Mechanical engineering / industry

5SY4463-8 — Ratings
Parameter	Value
Number of poles	4
Pole configuration	4P
Rated current (In), AC	63 A
Rated voltage, AC (multi-phase)	440 V
Rated voltage, AC (single-phase)	440 V

5SY4463-8 — Protection
Parameter	Value
Tripping characteristic (trip curve)	D
Overvoltage category	III
Pollution degree	3
Degree of protection (IP)	IP20, with connected conductors
Touch protection	Yes

5SY4463-8 — 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

5SY4463-8 — 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

5SY4463-8 — Performance
Parameter	Value
Mechanical service life (switching cycles, typ.)	10 000

Product details

4-pole D-curve MCB rated 63 A for industrial protection

The 5SY4463-8: Designed for industrial panel protection in mechanical engineering and general industry applications.

Mounting, derating, and panel fit

Compliance and environmental specs

Halogen-free and silicon-free construction meets strict environmental specifications. Sealed top and bottom terminals allow padlocking for lockout/tagout. Certified to IEC/EN 60898-1 and IEC/EN 60947-2 / UL1077, covering both domestic and industrial breaking duty.