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Siemens 5SL4425-6 — 4-Pole MCB (DIN Rail)

Siemens 5SL4425-6 SENTRON MCB, 4P, 25A, B-Curve, 10kA

MPN5SL4425-6
Active

Siemens SENTRON 5SL4425-6, 4-pole miniature circuit breaker, 25 A rated current, B tripping characteristic, 10 kA breaking capacity per EN 60898, 400 V AC.

Siemens 5SL4425-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL4425-6 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityResidential buildings/infrastructure
5SL4425-6 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC25 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, DC (max.)72 V
Voltage typeAC
5SL4425-6 — Protection
ParameterValue
Tripping characteristic (trip curve)B
Rated breaking capacity (Icn), per EN 6089810 kA
Rated breaking capacity, per IEC 60947-210 kA
Energy limitation class3
Overvoltage categoryIII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
Neutral conductor switchingNo
Touch protectionYes
5SL4425-6 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SL4425-6 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)+55 °C, max. 95% humidity

Product details

The 5SL4425-6 is a 4-pole SENTRON miniature circuit breaker rated 25 A at 30 °C with a B tripping characteristic, meaning it trips at 3–5× rated current — the standard choice for residential and light-commercial lighting and socket-outlet circuits where inrush is low. The 400 V AC rated voltage (440 V max multi-phase) covers three-phase 400/415 V networks common in European and Asian installations.

Derating and ambient conditions

The 25 A rating holds at 30 °C ambient; at 40 °C it derates to 23.68 A, at 45 °C to 23 A, and at 55 °C to 21.54 A.

Snap-on DIN-rail mounting in any position. The 4-pole body occupies 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep with 70 mm installation depth).

Frequently asked questions

What is the breaking capacity of 5SL4425-6?

10 kA per EN 60898 and also 10 kA per IEC 60947-2, at 400 V AC. That covers most building-distribution fault levels.

Where can I buy 5SL4425-6 and how is it quoted?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

Will 5SL4425-6 drop into a panel specified around 5SL4120-7CC?

No — the 5SL4120-7CC is a 2-pole 20 A unit. The 5SL4425-6 is 4-pole 25 A, so it requires a different panel layout, busbar arrangement, and upstream protection sizing.

What compliance documentation does Siemens provide for 5SL4425-6?

The breaker carries IEC 60898 and IEC 60947-2 ratings, is halogen-free and silicon-free, and is rated for overvoltage category III, pollution degree 2. Standard Siemens declarations of conformity (CE, UKCA) are available on request.

MPN
5SL4425-6