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Siemens 5SL1210-7MB — 2-Pole MCB (DIN Rail)

Siemens 5SL1210-7MB SENTRON MCB, 2P C-Curve 10A 3kA

MPN5SL1210-7MB

Siemens SENTRON 5SL1210-7MB, 2-pole miniature circuit breaker, C-curve, 10 A rated, 3 kA breaking capacity (IEC 60947-2), 230/400 V AC, 50/60 Hz, 2 MW, IP20.

Siemens 5SL1210-7MB datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL1210-7MB — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SL1210-7MB — Electrical
ParameterValue
Number of poles2
Supply voltage at AC rated value230 V
5SL1210-7MB — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SL1210-7MB — 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
5SL1210-7MB — Environmental
ParameterValue
Pollution degree2
5SL1210-7MB — Specifications
ParameterValue
With single-phase operation at AC rated value253 V

Product details

The Siemens 5SL1210-7MB is a SENTRON miniature circuit breaker — 2-pole, C-curve, rated 10 A, with a 3 kA breaking capacity tested to IEC 60947-2.

Panel fit and environmental range

The IP20 rating (with conductors connected) is the usual for inside a panel; keep it behind the enclosure door. Mount it in any position, which simplifies panel layout when you're tight on space.

If your service entrance or sub-panel has a higher available fault current, you'll need a breaker with a higher interrupting rating (like the 10 kA versions in the same SENTRON family). The 2-pole design switches both lines, which is what you need for a 230 V single-phase circuit or a 2-pole branch on a 400/440 V three-phase system.

Frequently asked questions

What is the breaking capacity of the 5SL1210-7MB?

The 5SL1210-7MB has a rated breaking capacity of 3 kA according to IEC 60947-2. This is the maximum short-circuit current it can safely interrupt at its rated voltage.

What is the 5SL1210-7MB used for?

This 2-pole C-curve miniature circuit breaker is designed for residential buildings and infrastructure applications. It protects branch circuits for general-purpose loads like lighting, socket outlets, and small appliances where the C-curve's 5-10x inrush tolerance prevents nuisance tripping.

Where can I buy the 5SL1210-7MB and what is the price?

The 5SL1210-7MB is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

Does the 5SL1210-7MB have any compliance documentation?

The 5SL1210-7MB is a Siemens SENTRON product designed for residential/infrastructure use. It carries IEC 60947-2 certification for its 3 kA breaking capacity rating. For specific compliance documents (RoHS, REACH, UL), these are typically available from Siemens upon request or through the product documentation portal.

MPN
5SL1210-7MB