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Siemens 5SY4325-7KK11 — 3-Pole MCB (DIN Rail)

Siemens 5SY4325-7KK11 SENTRON MCB, 3P C-curve, 10kA

MPN5SY4325-7KK11

Siemens SENTRON 5SY4325-7KK11, 3-pole miniature circuit breaker, C-curve, 10 kA (EN 60898) / 20 kA (IEC 60947-2), 400 V AC, 60 V DC, 3 modular width units.

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

Specifications

5SY4325-7KK11 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SY4325-7KK11 — Protection
ParameterValue
Tripping characteristic (curve)C
Breaking capacity per EN 6089810 kA
Breaking capacity per IEC 60947-220 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree3
5SY4325-7KK11 — Electrical
ParameterValue
Rated voltage (AC, multi-phase)440 V
Voltage type (AC/DC)AC
Supply frequency range50/60 Hz
Power loss per pole at rated current (AC, hot)2.2 W
Mechanical service life (operating cycles, typ.)10 000
Neutral conductor switchingNo
Rated voltage (AC, single-phase)440 V
5SY4325-7KK11 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodQuick assembly system
SealableYes
Accepts supplementary devicesYes
5SY4325-7KK11 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturemax. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
Vibration resistance (IEC 60068-2-6)±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz

Product details

What this MCB brings to a panel

The Siemens 5SY4325-7KK11 is a 3-pole SENTRON miniature circuit breaker with a C-curve trip characteristic, rated 10 kA breaking capacity per DIN EN60898-1 and 20 kA per IEC 60947-2 at 400 V AC. The C-curve (5–10× In) handles motor inrush and transformer magnetizing without nuisance tripping, so it fits mechanical engineering and industry environments as the product designation states. Rated 400 V AC for multi-phase or single-phase operation (also 440 V AC), and 60 V DC (max 72 V) with 15 kA DC breaking capacity per IEC 60947-2.

The quick-assembly fastening method and combined terminals top and bottom simplify wiring — feed from any direction, no need to flip the breaker. Mounting position is unrestricted, so it works in vertical or horizontal busbars. IP20 with connected conductors; keep the panel door closed in dusty environments.

Halogen-free and silicon-free construction, which matters in railway applications (the product is designed for railway use) and in sealed panels where outgassing can contaminate contacts. Temperature range spans -40 °C to 75 °C, with humidity derating: max 95% RH at 55 °C, tapering to 35% at 75 °C.

Frequently asked questions

How do I get current pricing and availability for 5SY4325-7KK11?

Submit an RFQ through this listing. The part is sourced through independent distribution; pricing and stock levels are confirmed at quote time.

Will 5SY4325-7KK11 drop into a panel specified around 5SY4304-7CV without rewiring?

Both are 3-pole SENTRON MCBs on DIN rail with the same 3-module width (54 mm), so the physical footprint matches. The 5SY4325-7KK11 carries a higher breaking capacity (20 kA vs the 5SY4304-7CV's rating per IEC 60947-2) and a C-curve instead of a B-curve. Verify the trip characteristic and fault rating against your panel design before swapping — the terminals and busbar connection are the same form factor.

What compliance documentation does this brand provide for 5SY4325-7KK11?

The MCB is certified to DIN EN60898-1 and IEC 60947-2. It is also designed for railway applications, which implies compliance with relevant rail standards. The manufacturer provides standard declarations and certificates; request specific documentation (CE, UKCA, etc.) at quote time.

MPN
5SY4325-7KK11