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Siemens 5SJ4202-8HG42 — 2-Pole MCB (DIN Rail)

Siemens 5SJ4202-8HG42 SENTRON MCB, 2-Pole, D-Curve, 10 kA

MPN5SJ4202-8HG42

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Siemens SENTRON 5SJ4 series, 2-pole miniature circuit breaker, D-curve, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC / 60 V DC, 2 MW, 70 mm depth, snap-on DIN rail.

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Siemens 5SJ4202-8HG42 datasheet (PDF)

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

Specifications

5SJ4202-8HG42 — Identification
Parameter	Value
Product designation	Miniature circuit breakers
Brand name	SENTRON
Application environment	Mechanical engineering / industry

5SJ4202-8HG42 — Electrical
Parameter	Value
Number of poles	2

5SJ4202-8HG42 — Protection
Parameter	Value
Tripping characteristic class	D
Overvoltage category	3

5SJ4202-8HG42 — Mechanical
Parameter	Value
Modular width units	2
Width	36 mm
Height	121 mm
Depth	70 mm
Installation depth	70 mm
Mounting position	any
Min.	-40 °C
Max.	75 °C
Protection degree (IP)	IP20, with connected conductors, IP 40 in the handle range

5SJ4202-8HG42 — Environmental
Parameter	Value
Pollution degree	3

5SJ4202-8HG42 — Specifications
Parameter	Value
At AC rated value	400 V
According to EN 60898 rated value	10 kA

Product details

The 5SJ4202-8HG42: Width is 36 mm — that's 2 modular units (MW) on a standard DIN rail. Depth is 70 mm, height 121 mm. Snaps onto any standard mounting rail, mounting position is unrestricted.

Rated frequency is 50 Hz. Insulation voltage (Ui) is 440 V AC. The breaker is suitable for mechanical engineering and industry environments per its suitability designation. Ambient operation allows up to 95% humidity. The EMC classification is environment B (immunity not applicable), which is standard for passive protective devices.