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Siemens 5SY4463-6 — 4-Pole MCB (DIN Rail)

Siemens 5SY4463-6 SENTRON MCB, 4P B 63A 10kA

MPN5SY4463-6

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Siemens SENTRON 5SY4463-6, a 4-pole B-curve miniature circuit breaker rated 63 A at 35 °C, 400 V AC, 10 kA breaking capacity per EN 60898 and 15 kA per IEC 60947-2.

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Siemens 5SY4463-6 datasheet (PDF)

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

Specifications

5SY4463-6 — Identification
Parameter	Value
Brand name	SENTRON
Application suitability	Mechanical engineering / industry

5SY4463-6 — 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

5SY4463-6 — Protection
Parameter	Value
Tripping characteristic (trip curve)	B
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
Energy limitation class	3
Overvoltage category	III
Pollution degree	3
Degree of protection (IP)	IP20, with connected conductors
Neutral conductor switching	No
Touch protection	Yes

5SY4463-6 — 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

5SY4463-6 — 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

Product details

The 5SY4463-6: Mounting position is any; the fastening method uses a quick-assembly system, and the unit is sealable for lockout/tagout compliance. Halogen-free and silicon-free construction, pollution degree 3, and IP20 finger-safe terminals with connected conductors.

Panel fit and sourcing posture

Fits standard SENTRON panel-mounting rails and knockouts.

Installation notes

Combined terminal at both top and bottom — feed-through wiring is straightforward. Position of supply cord is any; no orientation restriction. Overvoltage category III, typically for fixed-install panel feeders. If the panel ambient exceeds 35 °C, apply the derated current values given in the spec table — the 63 A rating is valid only at 35 °C.