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Siemens 5SY8625-8 — 4-Pole MCB (DIN Rail)

Siemens 5SY8625-8 SENTRON MCB, 4P D-Curve 25A, 30kA IEC

MPN5SY8625-8
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Siemens SENTRON 5SY8625-8, 4-pole (3P+N) miniature circuit breaker, D characteristic, 25 A rated current, 30 kA breaking capacity acc. to IEC 60947-2.

Siemens 5SY8625-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY8625-8 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY8625-8 — Ratings
ParameterValue
Number of poles4
Pole configuration3P+N
Rated current (In), AC25 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Voltage typeAC
5SY8625-8 — Protection
ParameterValue
Tripping characteristic (trip curve)D
Rated breaking capacity, per IEC 60947-230 kA
Breaking capacity, AC (UL 1077 / CSA C22.2 No.235)5 kA
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingYes
Touch protectionYes
5SY8625-8 — 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
5SY8625-8 — 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

Product details

What this MCB does on the rail

For UL 1077 / CSA C22.2 No. 235 installations it carries a 5 kA interrupting rating, so check the panel SCCR if you are in a North American spec.

The 25 A rating holds at 45 °C ambient. At 50 °C it derates to 24.38 A; at 55 °C to 23.72 A. The operating range spans -40 °C to 75 °C, with humidity constraints: 95% RH up to 55 °C, 55% RH up to 70 °C, 35% RH up to 75 °C. Vibration resistance per IEC 60068-2-6 is ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz — suited for machine-mounted enclosures.

Frequently asked questions

What is the 5SY8625-8 used for?

This D-curve 4-pole MCB is specified for circuits with high inrush current — motor feeders, transformers, welding equipment, and industrial machinery panels where a B or C curve would trip on startup. The 30 kA breaking capacity per IEC 60947-2 suits it for high-fault-level distribution boards.

How do I get pricing and availability for the 5SY8625-8?

Submit an RFQ through this listing. We source it through independent distribution and confirm current pricing and lead time at quote — no automated stock figure here, just a real answer for your order quantity.

Will the 5SY8625-8 drop into a panel specified for the 5SY4140-7?

Both are SENTRON MCBs on the same DIN-rail footprint, but the 5SY8625-8 is a 4-pole 3P+N D-curve 25 A unit, while the 5SY4140-7 is a different pole/curve/current variant. The physical width matches the modular format, but verify the specific rating and pole configuration against your panel schedule before swapping — the wiring and load protection differ.

MPN
5SY8625-8