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Siemens 5SY5220-6KK11 — 2-Pole MCB (DIN Rail)

Siemens 5SY5220-6KK11 SENTRON MCB, 2P, 20 A, B Curve

MPN5SY5220-6KK11

Siemens SENTRON 5SY5220-6KK11, 2-pole miniature circuit breaker, 20 A rated current, B characteristic, 10 kA breaking capacity per EN 60898, 2 MW units wide.

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

Specifications

5SY5220-6KK11 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentuniversal current
5SY5220-6KK11 — Electrical
ParameterValue
Number of poles2
5SY5220-6KK11 — Protection
ParameterValue
Tripping characteristic classB
Overvoltage categoryIII
5SY5220-6KK11 — 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
5SY5220-6KK11 — Environmental
ParameterValue
Pollution degree3
5SY5220-6KK11 — Specifications
ParameterValue
Energy Limitation Class3

Product details

Mounting position is any, which simplifies panel layout in tight enclosures. The top and bottom terminals are combined (busbar-compatible), and the part is sealable — useful for applications requiring tamper-evident covers or lockout. IP20 protection applies with connected conductors, so it is intended for installation inside a panel or enclosure, not exposed to washdown or outdoor weather. Touch protection is built into the design.

Thermal derating

The 20 A rating holds at 35 °C ambient. At 40 °C it derates to 18.78 A, at 50 °C to 17.48 A, and at 60 °C to 16.08 A. If the panel internal ambient runs hot, size the upstream protection and load accordingly — the derating curve is published and predictable.

Frequently asked questions

Where can I buy 5SY5220-6KK11?

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

What is the breaking capacity of 5SY5220-6KK11?

It is rated 10 kA per EN 60898 for AC circuits and 10 kA per EN 60898-2 for DC circuits.

What is the width of 5SY5220-6KK11?

It is 36 mm wide, which corresponds to 2 modular width units on a standard DIN-rail panel.

Will 5SY5220-6KK11 drop into a panel specified around 5SY5240-7?

Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting, so the physical fit is the same. The difference is the rating: 5SY5220-6KK11 is 20 A B curve, while 5SY5240-7 is a different current/characteristic — verify the load requirements before substituting.

MPN
5SY5220-6KK11