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Siemens 5SL4440-7 — 4-Pole MCB (DIN Rail)

Siemens 5SL4440-7 SENTRON MCB, 4P C 40A 10kA 400V

MPN5SL4440-7
Active

Siemens SENTRON 5SL4440-7 miniature circuit breaker, 4-pole, C-curve, 40 A, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC, 4 MW.

Siemens 5SL4440-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL4440-7 — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityResidential buildings/infrastructure
5SL4440-7 — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated voltage, AC (multi-phase)440 V
5SL4440-7 — Protection
ParameterValue
Tripping characteristic (trip curve)C
Energy limitation class3
Overvoltage categoryIII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
5SL4440-7 — 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
5SL4440-7 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
5SL4440-7 — Performance
ParameterValue
Power loss per pole, AC (hot state, at In)3.3 W

Product details

That dual rating means the same part meets the SCCR requirement for most sub-distribution boards and final-load circuits without needing a separate upstream current-limiting device. Multi-phase operation is rated at 440 V AC maximum, giving headroom above the nominal 400 V for voltage swell conditions.

Mounting position is unrestricted, so the breaker can be installed horizontally or upside-down without derating the thermal-magnetic trip. IP20 with connected conductors — finger-safe from the front once wired, but not rated for washdown. Suitable for indoor panel use in residential buildings and infrastructure (schools, offices, light commercial).

Power loss and supplementary devices

Per-pole power loss at rated current in hot operating state is 3.3 W, so the total 4-pole dissipation is 13.2 W at full load.

Frequently asked questions

Where can I buy 5SL4440-7 and get a price?

The 5SL4440-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will 5SL4440-7 drop into a panel specified for 5SL4363-7 without rewiring?

No — the 5SL4363-7 is a 3-pole breaker (54 mm wide, 3 MW), while the 5SL4440-7 is 4-pole (72 mm wide, 4 MW). The width and pole count differ, so the panel busbar and wiring must be reconfigured for the fourth pole.

What is the 5SL4440-7 depth?

The depth is 76 mm, with an installation depth of 70 mm.

What compliance documentation is available for 5SL4440-7?

The part carries EN 60898 and IEC 60947-2 certification for breaking capacity. The SENTRON series is generally RoHS and REACH compliant; specific declarations are available from Siemens documentation.

MPN
5SL4440-7