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Siemens 5SY8608-7 — 4-Pole MCB (DIN Rail)

Siemens 5SY8608-7 SENTRON MCB, 8 A, C-Curve, 40 kA, 4-Pole

MPN5SY8608-7
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Siemens SENTRON 5SY8608-7 miniature circuit breaker, 4-pole 3P+N, 8 A rated, C tripping characteristic, 40 kA breaking capacity at 400 V AC, 72 x 90 x 76 mm.

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

Specifications

5SY8608-7 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY8608-7 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC8 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
5SY8608-7 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
5SY8608-7 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Fastening / mounting methodQuick assembly system
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY8608-7 — 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
5SY8608-7 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

The Siemens SENTRON 5SY8608-7 is a 4-pole (3P+N) miniature circuit breaker rated 8 A with a C tripping characteristic, designed for AC circuits at 50/60 Hz up to 440 V. The 15 kA DC rating at 72 V covers control-circuit protection in the same footprint. Dimensions of 72 mm wide (4 modular width units) by 90 mm tall by 76 mm deep fit standard DIN-rail enclosures. Neutral conductor switching is integrated — no separate link needed for 3P+N applications.

Thermal derating and environmental range

Rated 8 A at 45 °C, derated to 7.75 A at 50 °C and 7.5 A at 55 °C. Ambient temperature range spans -40 °C to 75 °C, with humidity limits of 95% at 55 °C, 55% at 70 °C, and 35% at 75 °C.

Frequently asked questions

What is the breaking capacity of 5SY8608-7?

40 kA at 400 V AC per IEC 60947-2, and 15 kA at 72 V DC. This allows direct use in high-fault panels without upstream fusing.

How do I get pricing and availability for 5SY8608-7?

Submit an RFQ through the storefront. Availability and current pricing are confirmed at quote time; the part is sourced through independent distribution channels.

Does 5SY8608-7 switch the neutral?

Yes, it is a 3P+N design with integrated neutral conductor switching. No separate neutral link is required.

MPN
5SY8608-7