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Siemens 5SY4206-7KK11 — 2-Pole MCB (DIN Rail)

Siemens 5SY4206-7KK11 SENTRON MCB, 2P C-curve 6A, 10kA

MPN5SY4206-7KK11

Siemens SENTRON 5SY4206-7KK11 miniature circuit breaker, 2-pole, C-curve, 6 A rated, 10 kA (EN 60898) / 35 kA (IEC 60947-2), 2 MW, IP20, for railway and industrial applications.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY4206-7KK11 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY4206-7KK11 — Electrical
ParameterValue
Number of poles2
5SY4206-7KK11 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY4206-7KK11 — 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
5SY4206-7KK11 — Environmental
ParameterValue
Pollution degree3
5SY4206-7KK11 — Specifications
ParameterValue
Energy Limitation Class3

Product details

Thermal derating — the number that matters

The 6 A rating holds at 35 °C ambient. Above that, the breaker derates: 5.63 A at 40 °C, 5.44 A at 45 °C, 5.24 A at 50 °C, 5.04 A at 55 °C, and 4.82 A at 60 °C. The breaker also carries a humidity derating curve: max 95% RH up to 55 °C, then dropping to 55% at 70 °C and 35% at 75 °C.

Physical fit and approvals

Dimensions: 76 mm deep, 36 mm wide, 90 mm high. Installation depth is 70 mm. The breaker is sealable, halogen-free, and silicon-free — important for clean-room or food-grade panels where outgassing or contamination is a concern. Touch protection is built in. Combined terminals on top and bottom accept both busbar and cable connections.

Frequently asked questions

What is the breaking capacity of 5SY4206-7KK11?

10 kA per EN 60898 and 35 kA per IEC 60947-2. The higher IEC figure applies when the breaker is used in industrial distribution per that standard.

What does the C-curve mean on this breaker?

The C-curve trips at 5 to 10 times rated current (30–60 A for this 6 A unit). It's the standard characteristic for general-purpose loads with moderate inrush — small motors, transformers, lighting, and control circuits.

Where can I buy 5SY4206-7KK11?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will 5SY4206-7KK11 fit a panel designed for 5SY4140-7?

Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting. The 5SY4140-7 is a 40 A B-curve breaker; the 5SY4206-7KK11 is a 6 A C-curve. They share the same footprint and terminal layout, so a direct swap is mechanically possible — but the trip characteristic and ampacity are different, so verify the circuit's load and coordination requirements before substituting.

MPN
5SY4206-7KK11