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Siemens 5SY4220-8 — 2-Pole MCB (DIN Rail)

Siemens 5SY4220-8 SENTRON 2-Pole MCB, 20 A, D Curve

MPN5SY4220-8
Active

Siemens SENTRON 5SY4220-8, 2-pole miniature circuit breaker, 20 A rated, D tripping characteristic, 36 mm width (2 modular width units).

$27.77Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4220-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY4220-8 — Electrical
ParameterValue
Number of poles2
5SY4220-8 — Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY4220-8 — 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
5SY4220-8 — Environmental
ParameterValue
Pollution degree3
5SY4220-8 — Specifications
ParameterValue
At AC rated value20 A
According to EN 60898 rated value10 kA
With single-phase operation at AC rated value440 V

Product details

D-curve selectivity for motor and transformer circuits

The 5SY4220-8: The higher IEC 60947-2 figure applies when the MCB is used in an industrial panel with a known prospective fault current; the EN 60898 rating governs residential or commercial distribution boards. Both standards are listed on the same device.

Temperature derating and ambient limits

Rated 20 A at 35 °C ambient.

No stock-holding claim; procurement is per BOM quantity.

Frequently asked questions

What is the breaking capacity of the Siemens 5SY4220-8?

The applicable rating depends on the installation standard your panel is designed to.

MPN
5SY4220-8