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Siemens 5SL6203-7MB — 2-Pole MCB (DIN Rail)

Siemens 5SL6203-7MB SENTRON MCB, 2-Pole, C-Curve, 3A, 6kA

MPN5SL6203-7MB
Active

Siemens SENTRON 5SL6203-7MB miniature circuit breaker, 2-pole, C-curve, 3 A rated, 400 V AC, 6 kA breaking capacity per EN 60898, 36 mm wide.

Siemens 5SL6203-7MB datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL6203-7MB — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SL6203-7MB — Electrical
ParameterValue
Number of poles2
Supply voltage at AC rated value400 V
5SL6203-7MB — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SL6203-7MB — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SL6203-7MB — Environmental
ParameterValue
Pollution degree2
5SL6203-7MB — Specifications
ParameterValue
According to EN 60898 rated value6 kA
With single-phase operation at AC rated value250 V
Energy Limitation ClassNo

Product details

The 5SL6203-7MB: Two modular width units (36 mm total) snap onto standard DIN rail; any mounting position works.

Compared to the 3-pole 5SL4363-7 (10 kA, 54 mm wide), the 5SL6203-7MB is a 2-pole unit with a lower 6 kA breaking capacity. It will not drop into a panel wired for the 5SL4363-7 without re-terminating the third pole and checking the fault-current rating. For a 2-pole residential or light-commercial sub-feed, the 6 kA rating is adequate; for a main panel with higher prospective short-circuit current, step up to the 10 kA sibling.

Frequently asked questions

What is the breaking capacity of 5SL6203-7MB?

The 5SL6203-7MB has a 6 kA breaking capacity at 400 V AC according to EN 60898. That rating governs its use in residential buildings and infrastructure applications.

Will 5SL6203-7MB fit a panel designed for 5SL4363-7?

No. The 5SL6203-7MB is a 2-pole, 36 mm wide unit; the 5SL4363-7 is a 3-pole, 54 mm wide unit. The panel would need rewiring for the different pole count and a check of the fault-current rating (6 kA vs 10 kA).

Where can I buy 5SL6203-7MB and get a price?

The 5SL6203-7MB is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability; lead time is confirmed at quote time.

What compliance documentation is available for 5SL6203-7MB?

As a Siemens SENTRON product, the 5SL6203-7MB carries RoHS, REACH, and IEC/EN 60898-1 certification. Declarations of conformity and material data are part of the standard documentation set.

MPN
5SL6203-7MB