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Siemens 5SY4306-8 — 3-Pole MCB (DIN Rail)

Siemens 5SY4306-8 3-Pole MCB, D Curve, 10 kA / 35 kA

MPN5SY4306-8

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Siemens SENTRON 5SY4306-8, 3-pole miniature circuit breaker, D tripping characteristic, 10 kA (EN 60898-1) / 35 kA (IEC 60947-2) breaking capacity, 400 V AC, 60 V DC.

$37.03Ref. price · indicative, final on quote

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Siemens 5SY4306-8 datasheet (PDF)

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

Specifications

5SY4306-8 — Identification
Parameter	Value
Brand name	SENTRON
Number of poles	3
Pole configuration	3P
Suitability for operation	Mechanical engineering / industry

5SY4306-8 — Protection
Parameter	Value
Tripping characteristic (curve)	D
Breaking capacity per EN 60898	10 kA
Breaking capacity per IEC 60947-2	35 kA
Overvoltage category	III
IP protection class	IP20, with connected conductors
Pollution degree	3

5SY4306-8 — Electrical
Parameter	Value
Rated voltage (AC, multi-phase)	440 V
Voltage type (AC/DC)	AC
Supply frequency range	50/60 Hz
Power loss per pole at rated current (AC, hot)	1.6 W
Mechanical service life (operating cycles, typ.)	10 000
Neutral conductor switching	No
Rated voltage (AC, single-phase)	440 V

5SY4306-8 — Mechanical
Parameter	Value
Modular width units	3
Mounting position	any
Width	54 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Terminal tightening torque, max.	75 °C
Terminal tightening torque, min.	-40 °C
Combined terminal, top	Yes
Combined terminal, bottom	Yes
Fastening method	Quick assembly system
Sealable	Yes
Accepts supplementary devices	Yes

5SY4306-8 — Environmental
Parameter	Value
Halogen-free	Yes
Silicone-free	Yes
Influence of surrounding temperature	max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
Vibration resistance (IEC 60068-2-6)	±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz

Product details

Breaking capacity and tripping characteristic

The 5SY4306-8: For DC circuits the breaking capacity is 15 kA per IEC 60947-2 at 60 V (max 72 V), confirming suitability for DC motor branches or control power feeds with a 3-pole series configuration.

Mounts in any position, with IP20 protection when conductors are connected. The sealable option (padlockable toggle) is useful for lockout/tagout on a machine panel.