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Siemens 5SL1232-7MB — 2-Pole MCB (DIN Rail)

Siemens 5SL1232-7MB SENTRON MCB, 2P C 32A, 3kA IEC

MPN5SL1232-7MB

Siemens SENTRON 5SL1232-7MB, 2-pole miniature circuit breaker, C-curve, 32 A rated, 3 kA breaking capacity per IEC 60947-2, 230/400 V AC, 2 MW units.

Siemens 5SL1232-7MB datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL1232-7MB — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SL1232-7MB — Electrical
ParameterValue
Number of poles2
Supply voltage at AC rated value230 V
5SL1232-7MB — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SL1232-7MB — 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
5SL1232-7MB — Environmental
ParameterValue
Pollution degree2
5SL1232-7MB — Specifications
ParameterValue
With single-phase operation at AC rated value253 V

Product details

Siemens SENTRON 5SL1232-7MB — 2-pole MCB, C-curve, 32 A, 3 kA

Rated for 230/400 V AC single/multi-phase operation at 50/60 Hz, it occupies 2 modular width units (36 mm) on a DIN rail — a standard snap-on fit for any distribution board.

For higher fault levels — say a sub-distribution board closer to the transformer — the 5SL4363-7 (3-pole, 10 kA per EN 60898) would be the next step up. The 5SL1232-7MB's 2-pole form factor also means it switches both line and neutral, which is standard for single-phase final circuits in many European and Asian schemes.

Mounting position is unrestricted — horizontal, vertical, or inverted.

Frequently asked questions

What is the breaking capacity of 5SL1232-7MB?

The 5SL1232-7MB is rated 3 kA per IEC 60947-2. This suits residential and light commercial panels where the prospective short-circuit current is below 3 kA.

Will 5SL1232-7MB drop into a panel designed for 5SL4363-7?

No — the 5SL4363-7 is a 3-pole unit (54 mm wide, 3 MW) while the 5SL1232-7MB is 2-pole (36 mm wide, 2 MW). The DIN rail clip fits the same rail, but the panel cutout and busbar arrangement differ. The 5SL4363-7 also carries a higher 10 kA breaking capacity per EN 60898.

Where can I buy the 5SL1232-7MB?

The 5SL1232-7MB is sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

What compliance documentation does Siemens provide for 5SL1232-7MB?

As a SENTRON miniature circuit breaker, the 5SL1232-7MB carries IEC 60947-2 rating and is designed for overvoltage category III, pollution degree 2. Siemens provides CE declaration of conformity and material compliance (RoHS, REACH) through its standard documentation package. The housing is halogen-free and silicon-free.

MPN
5SL1232-7MB