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Siemens 5SY4204-6 — 2-Pole MCB (DIN Rail)

Siemens 5SY4204-6 SENTRON MCB, 2P B-Curve, 10 kA IEC, 35 kA

MPN5SY4204-6
Active

Siemens SENTRON 5SY4204-6, 2-pole miniature circuit breaker, B tripping characteristic, rated 400 V AC / 60 V DC, breaking capacity 10 kA (EN 60898) / 35 kA (IEC 60947-2).

Siemens 5SY4204-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4204-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY4204-6 — Electrical
ParameterValue
Number of poles2
5SY4204-6 — Protection
ParameterValue
Tripping characteristic classB
Overvoltage categoryIII
5SY4204-6 — 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
5SY4204-6 — Environmental
ParameterValue
Pollution degree3
5SY4204-6 — Specifications
ParameterValue
At AC rated value400 V
According to EN 60898 rated value10 kA
With single-phase operation at AC rated value440 V
Energy Limitation Class3

Product details

Rated 400 V AC (multi-phase) and 60 V DC, with a breaking capacity of 10 kA per EN 60898 and 35 kA per IEC 60947-2, it covers most panel fault-current requirements.

Breaking capacity and what it means for your panel

The 10 kA rating under EN 60898 is the standard for domestic and light commercial final circuits. For DC circuits, the rated breaking capacity is 15 kA at 60 V (up to 72 V max). Under UL 1077 and CSA C22.2 No. 235, the rating is 5 kA — relevant if the panel is destined for North America.

Halogen-free and silicon-free construction, with a sealable design for tamper-proofing in critical circuits.

Frequently asked questions

What is the breaking capacity of 5SY4204-6?

10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA at 60 V DC. Under UL 1077 / CSA it is rated 5 kA.

What are the physical dimensions of 5SY4204-6?

Depth 76 mm, width 36 mm (2 modular units), height 90 mm. Installation depth is 70 mm.

Will 5SY4204-6 drop into a panel specified around 5SY4140-7 without rewiring?

Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting, so the physical fit is identical. The difference is the tripping characteristic: 5SY4204-6 is B-curve (3–5× In), while 5SY4140-7 is C-curve (5–10× In). If the panel was designed for C-curve, swapping to B-curve may cause nuisance tripping on loads with higher inrush — verify the load type before substituting.

Where can I buy 5SY4204-6 and how is it quoted?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer.

MPN
5SY4204-6