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Siemens 5SY4225-8 — 2-Pole MCB (DIN Rail)

SENTRON 5SY4225-8 MCB, 2P, D-curve, 10kA EN, 20kA IEC

MPN5SY4225-8
Active

SENTRON miniature circuit breaker, 5SY4225-8, 2-pole, D characteristic, 10 kA (EN 60898-1) / 20 kA (IEC 60947-2), 400 V AC.

$156.95Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY4225-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY4225-8 — Electrical
ParameterValue
Number of poles2
5SY4225-8 — Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY4225-8 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY4225-8 — Environmental
ParameterValue
Pollution degree3
5SY4225-8 — Specifications
ParameterValue
At AC rated value400 V
According to EN 60898 rated value10 kA
With single-phase operation at AC rated value440 V

Product details

It carries a 10 kA breaking capacity per EN 60898-1 and 20 kA per IEC 60947-2, with a DC rating of 15 kA at 60 V per IEC 60947-2. The D-curve is designed for high inrush loads like motor starters and transformers, where the magnetic trip holds off long enough to avoid nuisance trips on startup.

Physical Fit & Mounting

Depth is 76 mm (70 mm installation depth). The combined top and bottom terminals simplify busbar wiring.

Standards & Environment

Compliant with IEC/EN 60898-1, IEC/EN 60947-2, and UL1077. Pollution degree 3, overvoltage category III. Halogen-free and silicon-free construction. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.

Frequently asked questions

What is the physical size of the 5SY4225-8?

Width 36 mm (2 modular units), depth 76 mm, height 90 mm. Installation depth is 70 mm.

What compliance documentation is available?

The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL1077. It is halogen-free and silicon-free. Specific RoHS/REACH declarations are available from the manufacturer.

MPN
5SY4225-8