Skip to main content
Log in
Siemens 5SY4425-5 — 4-Pole MCB (DIN Rail)

Siemens 5SY4425-5 SENTRON MCB, 4P 25A Char A, 10/20 kA

MPN5SY4425-5
Active

Siemens SENTRON 5SY4, miniature circuit breaker, 4-pole, 25 A, characteristic A, 400 V AC, 10 kA per EN 60898, 20 kA per IEC 60947-2, 72 mm width (4 MW), IP20 with conductors.

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

Specifications

5SY4425-5 — Identification
ParameterValue
Type / order code5SY4
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4425-5 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
Rated voltage, DC (max.)72 V
Voltage typeAC
Rated frequency50/60 Hz
5SY4425-5 — Protection
ParameterValue
Tripping characteristic (trip curve)A
Rated breaking capacity (Icn), per EN 6089810 kA
Rated breaking capacity, per IEC 60947-220 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 switchingNo
Touch protectionYes
5SY4425-5 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY4425-5 — 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
5SY4425-5 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

Rated for the line side — 25 A, 4-pole, characteristic A

The Siemens 5SY4425-5 is a SENTRON 5SY4 miniature circuit breaker rated 25 A at 400 V AC, 4-pole (4P), with tripping characteristic A. That means it trips on overload at 1.13 to 1.45 times rated current and on short-circuit with magnetic release between 2 and 3 times In — fast enough to protect semiconductor loads or long cable runs where low overcurrent tolerance is needed.

Mounts via quick-assembly system (DIN rail compatible) in any position. Supply cord position is any, and the combined terminal top/bottom design simplifies busbar and outgoing wiring.

Frequently asked questions

What is the breaking capacity of 5SY4425-5?

10 kA per EN 60898 and 20 kA per IEC 60947-2 at 400 V AC. For UL/CSA applications, 5 kA at AC per UL 1077 and CSA C22.2 No.235.

What is the DC rating of 5SY4425-5?

Rated 72 V DC with a breaking capacity of 15 kA per IEC 60947-2.

What is the width of 5SY4425-5 in DIN rail units?

72 mm, which is 4 width units (4 MW). Depth is 76 mm, installation depth 70 mm.

Where can I buy 5SY4425-5 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.

MPN
5SY4425-5