Siemens 5SY4350-6KK11 SENTRON MCB, 3P B-Curve, 10/15kA

Name: 5SY4350-6KK11
Brand: Siemens
SKU: 5SY4350-6KK11
Availability: LimitedAvailability
Author: Huaqiang Hank

Specifications

Identification

5SY4350-6KK11 — Identification
Parameter	Value
Brand name	SENTRON
Number of poles	3
Pole configuration	3P
Suitability for operation	Mechanical engineering / industry

Protection

5SY4350-6KK11 — Protection
Parameter	Value
Tripping characteristic (curve)	B
Breaking capacity per EN 60898	10 kA
Breaking capacity per IEC 60947-2	15 kA
Overvoltage category	III
IP protection class	IP20, with connected conductors
Energy limitation class	3
Pollution degree	3

Electrical

5SY4350-6KK11 — 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)	4.3 W
Mechanical service life (operating cycles, typ.)	10 000
Neutral conductor switching	No
Rated voltage (AC, single-phase)	440 V

Mechanical

5SY4350-6KK11 — 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

Environmental

5SY4350-6KK11 — 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

The Siemens SENTRON 5SY4350-6KK11 is a 3-pole miniature circuit breaker with a B tripping characteristic, rated 10 kA interrupting capacity per EN 60898-1 and 15 kA per IEC 60947-2 at 400 V AC. The B-curve trips between 3 and 5 times rated current — standard for protecting residential or light commercial cable runs where inrush is low (lighting, socket circuits). The dual rating means it meets both the domestic-standard (EN 60898-1) and industrial-standard (IEC 60947-2) SCCR requirements, giving it flexibility for panel builds that need to satisfy either code.

Integration & Fit

Snap-on DIN rail mount, 3 MW (modular width units) at 54 mm wide. Depth 76 mm, installation depth 70 mm. Combined top and bottom terminals accept feed from either direction. Sealable cover option (yes) for tamper-proof installations. Operating temperature range -40 to 75 °C, with derated humidity limits above 55 °C. IP20 with conductors connected — panel interior only, not field-exposed.

Frequently asked questions

Where can I buy the 5SY4350-6KK11 and get a price?

This part is available to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.

What are the key interrupting ratings for this MCB?

10 kA per EN 60898-1 and 15 kA per IEC 60947-2 at 400 V AC. The higher IEC rating covers industrial panel SCCR requirements.