Skip to main content
Log in
Siemens 5SY4406-7 — 4-Pole MCB (DIN Rail)

Siemens 5SY4406-7 SENTRON 4P MCB C 6A

MPN5SY4406-7
Active

Siemens SENTRON 5SY4406-7 4-pole miniature circuit breaker, C-curve 6 A rated current, 10 kA per EN 60898 / 35 kA per IEC 60947-2, IP20 with conductors, -40 to 75 °C.

$40.64Ref. price · indicative, final on quote
Siemens 5SY4406-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4406-7 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityMechanical engineering / industry
5SY4406-7 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC6 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)440 V
5SY4406-7 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Energy limitation class3
Overvoltage categoryIII
Pollution degree3
Degree of protection (IP)IP20, with connected conductors
5SY4406-7 — 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
5SY4406-7 — 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
5SY4406-7 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

Watch the temperature derate

The 5SY4406-7: That 6 A rating holds at 35 °C ambient. In a warm cabinet — say 50 °C — the continuous current drops to 5.41 A, and at 60 °C it's 5.09 A. If you're slotting this next to a drive or transformer that drives the internal temperature up, factor in the derate rather than nuisance tripping. The breaker itself can handle up to 75 °C ambient and as low as -40 °C, so the limits are generous; it's the trip curve that shifts.

Mounting and layout

It snaps onto DIN rail using the quick-assembly system — no tools needed. The neutral conductor is not switched (4P but neutral pass-through), so plan your phase-to-neutral distribution accordingly. Top and bottom terminals accept the same size conductors. Sealable cover is standard if the panel needs tamper-proofing.

Frequently asked questions

What are the key ratings?

4-pole, C-curve, 6 A at 35 °C. Interrupting: 10 kA per EN 60898, 35 kA per IEC 60947-2. Standards: IEC/EN 60898-1, IEC/EN 60947-2, UL 1077. Temperature range -40 to 75 °C.

What compliance documentation is available?

It meets IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077. The breaker is rated pollution degree 3, overvoltage category III, IP20 with conductors connected. Halogen-free and silicon-free.

What are the physical dimensions?

Depth 76 mm, width 72 mm, height 90 mm. Installation depth 70 mm.

MPN
5SY4406-7