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Siemens 5SL6425-6CC — 4-Pole MCB (DIN Rail)

Siemens 5SL6425-6CC SENTRON MCB, 4P B 25A 400V 6kA

MPN5SL6425-6CC
Active

Siemens SENTRON 5SL6425-6CC, miniature circuit breaker, 4-pole, B-curve, 25 A, 400 V AC, 6 kA breaking capacity per EN 60898.

Siemens 5SL6425-6CC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL6425-6CC — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityResidential buildings/infrastructure
5SL6425-6CC — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated voltage, AC (multi-phase)440 V
5SL6425-6CC — Protection
ParameterValue
Tripping characteristic (trip curve)B
Energy limitation class3
Overvoltage categoryIII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
5SL6425-6CC — 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
5SL6425-6CC — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
5SL6425-6CC — Performance
ParameterValue
Power loss per pole, AC (hot state, at In)3.2 W

Product details

The Siemens 5SL6425-6CC is a SENTRON miniature circuit breaker rated 25 A, 400 V AC, with a 6 kA breaking capacity tested to EN 60898. The B-curve trips between 3 and 5 times rated current (75–125 A), so it's sized for resistive and general-purpose loads — lighting circuits, small heaters, control transformers — where inrush isn't severe. At 72 mm wide (4 modular width units), it occupies four 18 mm DIN-rail slots.

Snap-on DIN rail mounting, any orientation.

Electrical performance and coordination

Breaking capacity of 6 kA at 400 V AC per EN 60898 covers most residential and light commercial fault levels. Power loss per pole is 3.2 W at rated current in hot operating state — four poles total 12.8 W, which matters for thermal budgeting in a crowded enclosure. Vibration resistance tested to 50 m/s² at 25–150 Hz per IEC 60068-2-6, so it's fine on switchgear panels near rotating machinery.

Frequently asked questions

What is the 5SL6425-6CC used for?

It's a 4-pole B-curve MCB for 25 A, 400 V AC circuits in residential and light commercial sub-distribution boards — lighting, general-purpose receptacles, small resistive loads where inrush is low. The B-curve trips at 3–5x rated current, so it's not for motor circuits with high starting current.

Where can I buy the 5SL6425-6CC?

We source and quote it to order against an RFQ. Send your target quantity and delivery timeline; we confirm availability and current pricing at quote time through independent distribution channels.

How does the 5SL6425-6CC compare to the 5SL4363-7?

The 5SL4363-7 is a 3-pole C-curve 25A unit with 10 kA breaking capacity. The 5SL6425-6CC adds a fourth pole (switched neutral) and uses a B-curve instead of C-curve, so it's better suited for resistive loads where you need neutral switching. The 5SL4363-7 is 54 mm wide (3 MW), while the 5SL6425-6CC is 72 mm (4 MW) — it won't drop into a panel wired for the 3-pole without a wider DIN-rail slot and re-terminating the neutral.

What compliance documentation does Siemens provide for this MCB?

The 5SL6425-6CC is designed to EN 60898 and IEC 60947-2 standards. It carries CE marking for the European market. RoHS and REACH compliance is standard for current SENTRON production. For specific declarations or UL/CSA documentation, request it with your RFQ — we can source the manufacturer's current compliance pack.

MPN
5SL6425-6CC