BOM / RFQ

Siemens 5SY4250-5 — 2-Pole MCB (DIN Rail)

Siemens 5SY4250-5 SENTRON MCB, 2P 50A Char A

MPN5SY4250-5

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Siemens SENTRON 5SY4250-5 miniature circuit breaker, 2-pole, 50 A AC rated, Characteristic A, width 36 mm (2 MW), depth 76 mm, IP20, dual-rated 10 kA per IEC 60898-1 and 15 kA per IEC 60947-2.

$330.45Ref. price · indicative, final on quote

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

Specifications

5SY4250-5 — Identification
Parameter	Value
Product designation	Miniature circuit breaker
Brand name	SENTRON
Application environment	Mechanical engineering / industry

5SY4250-5 — Electrical
Parameter	Value
Number of poles	2

5SY4250-5 — Protection
Parameter	Value
Tripping characteristic class	A
Overvoltage category	III

5SY4250-5 — Mechanical
Parameter	Value
Modular width units	2
Width	36 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Mounting position	any
Min.	-40 °C
Max.	75 °C
Protection degree (IP)	IP20, with connected conductors

5SY4250-5 — Environmental
Parameter	Value
Pollution degree	3

5SY4250-5 — Specifications
Parameter	Value
At AC rated value	50 A
According to EN 60898 rated value	10 kA
With single-phase operation at AC rated value	440 V

Product details

What it is and key ratings

The 5SY4250-5: Temperature derating data supplied for 35°C through 60°C — at 40°C the rated current is 47.6 A, at 60°C it's 42.4 A — useful for panel ambient planning. Compliant to IEC/EN 60898-1 and IEC/EN 60947-2 / UL1077, halogen-free and silicon-free.

Physical integration

Quick assembly system for fast mounting; any orientation allowed. Neutral conductor not switched (2-pole with no isolated neutral pole).

Standards and documentation

Dual-rated: designed for both IEC 60898-1 (domestic-type installations) and IEC 60947-2 plus UL1077 (industrial supplementary protection). Suitability for operation in mechanical engineering and industry.