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Siemens 5SY4103-7XX02 — 1-Pole MCB (DIN Rail)

Siemens 5SY4103-7XX02 SENTRON MCB, 1P C 3A, 10 kA

MPN5SY4103-7XX02

Siemens SENTRON 5SY4103-7XX02, 1-pole miniature circuit breaker, C-curve 3 A, 10 kA (EN 60898) / 35 kA (IEC 60947-2), 27 mm wide, IP20.

Siemens 5SY4103-7XX02 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4103-7XX02 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityMechanical engineering / industry
5SY4103-7XX02 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Rated value (EN 60898)10 kA
Overvoltage categoryIII
5SY4103-7XX02 — Mounting & Connection
ParameterValue
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Width27 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SY4103-7XX02 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

It clears faults at 10 kA per EN 60898 and 35 kA per IEC 60947-2, with a UL 1077 / CSA C22.2 No. 235 interrupting capacity of 5 kA. The single-pole format (1P) fits a 27 mm wide module on a DIN rail, one width unit per EN 60715.

Sizing and selectivity for the panel builder

The 5SY4103-7XX02 accepts conductors from 0.75 mm² up to 35 mm² solid or stranded, with a tightening torque of 2.5–3.5 N·m on the screw terminals. That wire range covers everything from 1.5 mm² final subcircuits up to 10 mm² incoming tails — useful when the MCB is the first device after a meter or sub-distribution board.

Rated for AC only (type of voltage: AC) with a maximum DC voltage of 72 V. The product carries approvals per EN 60898, IEC 60947-2, and UL 1077 / CSA C22.2 No. 235 — covering European, international, and North American acceptance. Sealable for tamper-proof installations.

Frequently asked questions

How do I get current pricing and availability for 5SY4103-7XX02?

Submit an RFQ with your target quantity. We confirm availability and current pricing at quote time through our independent distribution channels — no stock figures or lead-time numbers on this page.

What is the closest functional second-source to 5SY4103-7XX02?

The 5SY4101-7CV is a direct peer in the same SENTRON 5SY series, also 1-pole C-curve but rated 1 A instead of 3 A. The 5SY4103-7XX02 drops into the same DIN-rail footprint (27 mm width, same depth) without rewiring — the only difference is the current rating and the corresponding breaking capacity values. If your load draws 3 A, stick with the 5SY4103-7XX02; the 1 A version will trip on inrush for a 3 A circuit.

What is the depth of 5SY4103-7XX02?

76 mm overall depth, with an installation depth of 70 mm. That fits a standard 80 mm deep enclosure without the back wall interfering with wiring.

What wire sizes does 5SY4103-7XX02 accept?

Solid or stranded conductors from 0.75 mm² up to 35 mm², terminated with a screw torque of 2.5–3.5 N·m. The combined top/bottom terminals accept feed from either direction.

Will 5SY4103-7XX02 drop into a panel specified around 5SY4101-7CV without rewiring?

Yes — same 27 mm width, same 76 mm depth, same DIN-rail mounting. The only change is the current rating: 3 A vs 1 A. No rewiring needed if the conductor sizing already supports 3 A. Verify the downstream load doesn't exceed 3 A continuous.

What compliance documentation does Siemens provide for 5SY4103-7XX02?

The MCB is rated per EN 60898 (10 kA), IEC 60947-2 (35 kA), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE, UKCA) and REACH/RoHS statements are available on request.

MPN
5SY4103-7XX02