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Siemens 5SY4100-7 — 1-Pole MCB (DIN Rail)

Siemens 5SY4100-7 SENTRON MCB, 1P C-Curve 10kA, 400V AC

MPN5SY4100-7
Active

Siemens SENTRON 5SY4100-7, 1-pole C-curve miniature circuit breaker, 10 kA (EN 60898-1) / 35 kA (IEC 60947-2), 400 V AC, 1 MW unit, IP20.

$12.19Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4100-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Pole design1P
Application suitabilityMechanical engineering / industry
5SY4100-7 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Energy limitation class3
Overvoltage categoryIII
5SY4100-7 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodQuick assembly system
Combined terminal, topYes
Combined terminal, bottomYes
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SY4100-7 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

It's a current-production part, so no lifecycle surprises — this is the standard MCB you'd spec for a new line or a BOM refresh. Rated for AC 400 V (phase-to-neutral) and DC 60 V, it carries a 10 kA breaking capacity under EN 60898-1 and 35 kA under IEC 60947-2 — enough headroom for most commercial and light-industrial fault levels without cascading upstream.

One modular width (18 mm wide, 90 mm tall, 76 mm deep including the quick-assembly fastening system) — it clips onto the DIN rail and occupies the same slot as any standard 1P MCB. No special cutout or gland-plate adjustment needed. IP20 with conductors connected — safe for enclosed panels, not for wet-area installation.

That 35 kA figure is the one you care about for panel SCCR calculations in an industrial setting — it means the breaker can interrupt a 35 kA prospective fault without rupturing. Also carries a UL 1077 listing at 5 kA (AC) for North American supplementary-protection applications — not a branch-circuit-rated breaker under UL 489, so verify the local code requirement before using it as a main disconnect. The DC rating (15 kA at 60 V per IEC 60947-2) covers DC bus protection in drives or battery circuits — useful if you're feeding a DC link from a rectifier.

For BOM traceability, the manufacturer provides RoHS and REACH compliance documentation along with the IEC/EN/UL certifications. The sealable design (tamper-evident cover) supports inspection and LOTO procedures.

Frequently asked questions

Will 5SY4100-7 drop into a panel that was specified around 5SY4140-7 without rewiring?

Yes — both are 1-pole SENTRON MCBs with the same 18 mm width, DIN-rail clip, and terminal layout. The 5SY4140-7 is a different amp rating in the same physical envelope, so it swaps in without panel modifications.

What compliance documentation does Siemens provide for 5SY4100-7?

RoHS and REACH declarations, plus the IEC/EN 60898-1, IEC 60947-2, and UL 1077 certification documents. Halogen-free and silicon-free material declarations are also available.

MPN
5SY4100-7