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Siemens 5SY6650-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY6650-8 SENTRON MCB, 50 A, D Curve, 4P, 10 kA IEC

MPN5SY6650-8

Siemens SENTRON 5SY6 series, 5SY6650-8, 4-pole miniature circuit breaker, 50 A, D characteristic, 400 V AC, 10 kA IEC 60947-2, quick-assembly mounting.

$586.05Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY6650-8 — Identification
ParameterValue
Type / order code5SY6
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY6650-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC400 V
Rated current (In), AC50 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Rated voltage, DC (max.)72 V
Voltage typeAC
Rated frequency50/60 Hz
5SY6650-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity (Icn), per EN 608986 kA
Rated breaking capacity, per IEC 60947-210 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)5 kA
Overvoltage categoryIII
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingYes
Touch protectionYes
5SY6650-8 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
SealableYes
5SY6650-8 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
5SY6650-8 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

The Siemens 5SY6650-8 is a SENTRON miniature circuit breaker rated 50 A at 400 V AC, 4-pole (3P+N), with a D tripping characteristic. Breaking capacity is 6 kA per EN 60898 and 10 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2.

Occupies 4 width units (72 mm wide,). Mounting position is any. Combined top and bottom terminals simplify daisy-chaining busbars. Sealing provision is present for lockout/tagout.

Halogen-free and silicon-free construction. Humidity tolerance: max 95% at 55 °C, derating to 35% at 75 °C. Protection class IP20 with connected conductors. Overvoltage category III. Touch protection integrated. Rated frequency 50/60 Hz. Suitability flagged for mechanical engineering and industry.

Frequently asked questions

What is the breaking capacity of 5SY6650-8?

6 kA per EN 60898 and 10 kA per IEC 60947-2 at 400 V AC. For DC circuits, the breaking capacity is 15 kA per IEC 60947-2. UL/CSA rating is 5 kA per UL 1077 and CSA C22.2 No.235.

Will 5SY6650-8 drop into a panel specified around 5SY7140-8CC without rewiring?

Yes — both are 4-pole (3P+N) SENTRON MCBs on the same DIN-rail footprint (72 mm wide, 4 width units) with identical terminal ranges (0.75–35 mm² solid/stranded). The physical swap requires no enclosure modification or rewiring; only verify the load current matches the replacement's 50 A rating.

What compliance documentation does Siemens provide for 5SY6650-8?

The breaker carries EN 60898 and IEC 60947-2 ratings, with UL 1077 and CSA C22.2 No.235 certification at 5 kA. As a SENTRON product, Siemens provides RoHS and REACH declarations, along with a CE declaration of conformity. Specific documentation packages (material certificates, test reports) are available on request through the supply chain.

How do I get current pricing and availability for 5SY6650-8?

The 5SY6650-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and delivery window.

MPN
5SY6650-8