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Siemens 5SL3150-6 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SL3150-6 MCB, 50 A, 1P, B Curve, 4.5 kA

MPN5SL3150-6

Siemens SENTRON 5SL miniature circuit breaker, 1-pole, B characteristic, 50 A rated current, 4.5 kA breaking capacity, 400 V AC, 18 mm width.

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

Specifications

5SL3150-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityResidential buildings/infrastructure
5SL3150-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Rated value (EN 60898)4.5 kA
Overvoltage category3
5SL3150-6 — Mounting & Connection
ParameterValue
Mounting positionany
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SL3150-6 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

The 5SL3150-6: Snaps onto DIN rail at 18 mm per pole (1 width unit). Mounting position is unrestricted — vertical, horizontal, upside-down — which helps when you're shoehorning it into a crowded enclosure. Terminals accept 0.75 to 25 mm² solid or stranded copper, torqued to 2.5–3 N·m.

Lifecycle stage is current — no phase-out, no last-time-buy on the horizon. That means you can spec it into a design without worrying about a forced redesign mid-cycle.

Rated for residential buildings and infrastructure — think distribution boards, sub-panels, lighting circuits, general-purpose branch protection. Ambient range is -25 to +45 °C operating, -40 to +75 °C storage. Halogen-free and silicon-free construction for environments sensitive to outgassing.

Frequently asked questions

Where can I buy the 5SL3150-6 and how do I get a price?

We source this part to order against an RFQ. Submit a request for quote through this page; availability and current pricing are confirmed at quote time.

Will the 5SL3150-6 drop into a panel specified around the 5SL3120-6MB?

Yes, same 18 mm width, same 70 mm installation depth, same terminal range. The only difference is the current rating — 50 A vs 20 A — so the bus bar and upstream protection must support the higher load.

What compliance documentation does Siemens provide for the 5SL3150-6?

Standard SENTRON documentation includes RoHS and REACH declarations, plus IEC 60898 and IEC 60947-2 test certificates. The part is also rated for overvoltage category 3 and IP20 with conductors connected.

MPN
5SL3150-6