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Siemens 5SL4350-6 — 3-Pole MCB (DIN Rail)

Siemens 5SL4350-6 SENTRON MCB, 3P B-Curve 50 A 400 V 10 kA

MPN5SL4350-6
Active

Siemens SENTRON 5SL4350-6 miniature circuit breaker, 3-pole, B-curve, 50 A, 400 V AC, 10 kA breaking capacity per EN 60898 / IEC 60947-2.

$127.44Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL4350-6 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationResidential buildings/infrastructure
5SL4350-6 — Protection
ParameterValue
Tripping characteristic (curve)B
Breaking capacity per EN 6089810 kA
Breaking capacity per IEC 60947-210 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree2
5SL4350-6 — 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)4 W
Mechanical service life (operating cycles, typ.)10 000
5SL4350-6 — 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
SealableYes
Accepts supplementary devicesYes
5SL4350-6 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes

Product details

The Siemens SENTRON 5SL4350-6 is a 3-pole miniature circuit breaker with a B-curve trip characteristic, rated 50 A at 400 V AC. It delivers a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, covering most residential and light commercial panelboard specs.

Rated for 10 000 mechanical operating cycles typical, with IP20 protection when conductors are connected. Halogen-free and silicon-free construction suits environments sensitive to outgassing.

Frequently asked questions

When sourcing 5SL4350-6, what's the closest functional second-source — 5SL4363-7?

The 5SL4363-7 is the same 3-pole SENTRON platform but with a C-curve trip characteristic and slightly higher per-pole power loss (5 W vs 4 W). It drops into the same panel footprint without rewiring.

What is 5SL4350-6's listed depth (76 mm) on this component line?

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

What is 5SL4350-6's listed width (54 mm) on this component line?

The width is 54 mm, equivalent to 3 modular width units.

Will 5SL4350-6 drop into a panel that was specified around 5SL4363-7 without rewiring?

Yes. Both breakers share the same 76 mm depth, 54 mm width, 90 mm height, 3-pole design, and 10 kA breaking capacity. The only functional difference is the trip curve — B versus C — so no mechanical or wiring changes are needed.

MPN
5SL4350-6