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Siemens 5SJ4235-7HG42 — 2-Pole MCB (DIN Rail)

Siemens 5SJ4235-7HG42 SENTRON 2-Pole MCB, 35 A, C-Curve

MPN5SJ4235-7HG42
Active

Siemens SENTRON 5SJ4 series, 2-pole miniature circuit breaker, 35 A rated, C characteristic, 2 MW, DIN rail mount.

$225.30Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SJ4235-7HG42 — Identification
ParameterValue
Product designationMiniature circuit breakers
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SJ4235-7HG42 — Electrical
ParameterValue
Number of poles2
5SJ4235-7HG42 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage category3
5SJ4235-7HG42 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height121 mm
Depth70 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors, IP 40 in the handle range
5SJ4235-7HG42 — Environmental
ParameterValue
Pollution degree3

Product details

35 A C-Curve on Two Poles

Thermal Derating and Ambient Range

Rated current holds at 35 A up to 40 °C ambient, then derates linearly to 31.5 A at 60 °C.

The breaker is sealable for lockout/tagout applications. IP20 with connected conductors, IP40 in the handle area — adequate for enclosed panels but not for wet-area mounting without a separate enclosure.

Halogen-free and silicon-free construction suits environments where outgassing must be minimised, such as clean rooms or sealed enclosures near sensitive electronics.

Frequently asked questions

Is the 5SJ4235-7HG42 suitable as a replacement for another 2-pole 35 A MCB?

As a standard 2-pole 35 A C-curve MCB on a 36 mm DIN-rail footprint, it is a functional replacement for any breaker meeting those same ratings and form factor. Confirm the breaking capacity and DC voltage rating (60 V max DC per pole) match your application requirements.

MPN
5SJ4235-7HG42