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Siemens 5SY4404-7 — 4-Pole MCB (DIN Rail)

Siemens 5SY4404-7 MCB, 4-Pole C-Curve 4A, 35kA

MPN5SY4404-7
Active

Siemens SENTRON 5SY4404-7, miniature circuit breaker, 4-pole, C-curve, 4 A rated current, 10/35 kA breaking capacity.

$50.80Ref. price · indicative, final on quote
Siemens 5SY4404-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4404-7 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4404-7 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC4 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
5SY4404-7 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Energy limitation class3
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
5SY4404-7 — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Fastening / mounting methodQuick assembly system
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SY4404-7 — 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
5SY4404-7 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

The 5SY4404-7: Temperature derating is specified from 35 °C upward: 3.81 A at 40 °C, stepping down to 3.39 A at 60 °C.

Mounting and panel footprint

The 5SY4404-7 occupies 4 modular width units (72 mm wide) on a DIN rail, with a depth of 76 mm (70 mm installation depth). The quick-assembly system allows snap-on mounting and removal without tools. Combined terminals are provided at both top and bottom, accepting conductors up to the cross-section supported by the terminal design. Mounting position is unrestricted, and the enclosure is sealable. IP20 is achieved only with connected conductors — the front face is finger-safe, but the terminals require conductors to maintain the protection rating.

The part is halogen-free and silicon-free, which may simplify compliance declarations for certain industry segments (semiconductor, medical, rail) where material restrictions are enforced.

Frequently asked questions

What are the key standards this breaker complies with?

It meets IEC/EN 60898-1 and IEC/EN 60947-2, as well as UL1077. The breaking capacity is verified under both standards: 10 kA per EN 60898 and 35 kA per IEC 60947-2.

What is the physical width of the 5SY4404-7?

It is 72 mm wide, which corresponds to 4 modular width units on a standard DIN rail.

MPN
5SY4404-7