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Siemens 5SL6125-7RC — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SL6125-7RC MCB, 25 A, 1-Pole, C-Curve, 7.5

MPN5SL6125-7RC
Active

Siemens SENTRON 5SL6125-7RC, miniature circuit breaker, 25 A, 1-pole, C characteristic, 7.5 kA breaking capacity per EN 60898, 1 MWU, IP20.

Siemens 5SL6125-7RC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL6125-7RC — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityResidential buildings/infrastructure
5SL6125-7RC — Electrical & Protection
ParameterValue
Tripping characteristic classC
Rated value (EN 60898)7.5 kA
Energy limitation classNo
Overvoltage categoryIII
5SL6125-7RC — Mounting & Connection
ParameterValue
Mounting positionany
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SL6125-7RC — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree2
Halogen-freeYes
Silicone-freeYes

Product details

The Siemens SENTRON 5SL6125-7RC is a 1-pole miniature circuit breaker rated 25 A with a C tripping characteristic and a 7.5 kA breaking capacity per EN 60898. Rated voltage is 250 VAC single-phase or 440 VAC multi-phase, with an overvoltage category III rating meaning it can handle transient overvoltages typical of fixed-installation distribution panels.

Body dimensions are 90 mm high, 18 mm wide, 76 mm deep — the standard 1 MWU footprint that drops into any SENTRON or third-party distribution board. Mounting position is unrestricted, and the touch-protected terminals meet IP20 with conductors connected. Sealable per the spec, so an inspector can lock the toggle position after commissioning.

Frequently asked questions

What is the breaking capacity of the 5SL6125-7RC?

The 5SL6125-7RC has a 7.5 kA rated breaking capacity per EN 60898 at 400 VAC. This is sufficient for most residential and light commercial distribution boards where the prospective fault current stays under that threshold.

Will the 5SL6125-7RC drop into a panel designed for the 5SL6132-6MB?

Yes — both are 1-pole, 1 MWU SENTRON MCBs with identical physical dimensions (90×18×76 mm) and the same mounting footprint. The difference is rating: the 5SL6125-7RC is 25 A with a C-curve and 7.5 kA breaking capacity, while the 5SL6132-6MB is 32 A with a B-curve and 6 kA. No rewiring needed if the conductor sizing and fault current allow the swap.

Where can I buy the 5SL6125-7RC and get a price?

The 5SL6125-7RC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote and lead-time estimate.

What compliance documentation does Siemens provide for this MCB?

The 5SL6125-7RC carries an EN 60898 rating (7.5 kA breaking capacity) and is designed for overvoltage category III, pollution degree 2 environments. Standard Siemens SENTRON documentation includes the declaration of conformity and product data sheet. Specific RoHS/REACH declarations are available on request.

MPN
5SL6125-7RC