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Siemens 5SY8350-8 — Miniature Circuit Breakers (MCB)

Siemens SENTRON 5SY8350-8 MCB, 3P, D Curve, 50 A, 20 kA

MPN5SY8350-8
Active

Siemens SENTRON miniature circuit breaker, 5SY8350-8, 3-pole, D tripping characteristic, 50 A rated current, 20 kA breaking capacity per IEC 60947-2, 440 V AC.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SY8350-8 — Ratings
ParameterValue
Overvoltage categoryIII
5SY8350-8 — Mechanical
ParameterValue
Width54 mm
Height90 mm
Depth76 mm

Product details

The Siemens SENTRON 5SY8350-8 is a 3-pole miniature circuit breaker with a D tripping characteristic, rated 50 A at 45 °C ambient and 440 V AC. At 50 °C the continuous rating derates to 48.95 A, and at 55 °C to 47.85 A — so if the enclosure runs warm, you may need to step up one frame size to hold the full 50 A load.

Integration into the panel

Mounting position is unrestricted, which helps when the cabinet layout forces a sideways or inverted orientation. The combined terminal design accepts top or bottom feed, and the supply cord can enter from any side — no need to flip the breaker for a specific wiring direction.

Frequently asked questions

What is the breaking capacity of the 5SY8350-8?

20 kA per IEC 60947-2 at AC, and 15 kA at DC up to 72 V. That 20 kA rating is the figure used for fault-level coordination in the panel.

Where can I buy the 5SY8350-8?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation does Siemens provide for the 5SY8350-8?

The part carries designations per EN 61346-2 and IEC 81346-2 (function code F). It is halogen-free and silicon-free. For specific RoHS, REACH, UL, or IEC declarations, request the manufacturer's compliance pack with your order.

MPN
5SY8350-8