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Siemens 5SJ4308-8HG42 — Miniature Circuit Breakers (MCB)

Siemens 5SJ4308-8HG42 3-Pole MCB, D-Curve, 10 kA / 15 kA

MPN5SJ4308-8HG42
Active

Siemens SENTRON 5SJ4308-8HG42, 3-pole miniature circuit breaker, D-curve, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC / 60 V DC, 3 modular width units.

$323.20Ref. price · indicative, final on quote
Siemens 5SJ4308-8HG42 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SJ4308-8HG42 — Ratings
ParameterValue
Overvoltage category3
5SJ4308-8HG42 — Mechanical
ParameterValue
Width54 mm
Height121 mm
Depth70 mm

Product details

Breaking capacity and trip curve for motor and transformer circuits

The 5SJ4308-8HG42 is a 3-pole miniature circuit breaker from the Siemens SENTRON 5SJ4 series, rated 10 kA according to EN 60898 and 15 kA according to IEC 60947-2. The insulation voltage (Ui) is 440 V AC, which sets the withstand level for the internal isolation path.

Mounting and environmental fit for panel integration

The enclosure is rated IP20 with connected conductors and IP40 in the handle area — sufficient for enclosed panel installation but not for wet or washdown zones.

Frequently asked questions

What is the price of Siemens 5SJ4308-8HG42?

Buyers need to compare costs before purchasing and require accurate pricing for BOM estimation.

Where to buy Siemens 5SJ4308-8HG42?

Transaction intent: sourcing buyers need to know authorized distributors that stock this MPN to avoid counterfeit or long lead times.

Is Siemens 5SJ4308-8HG42 UL 489 listed?

Design engineers require UL certification to ensure compliance with North American electrical codes.

What is the breaking capacity of 5SJ4308-8HG42?

Critical for design validation to ensure the MCB can interrupt fault currents safely in the application.

What is the datasheet for 5SJ4308-8HG42?

Designers and techs need full electrical and mechanical specs to validate fit and performance.

Can I use 5SJ4308-8HG42 in a 480V AC system?

The rated voltage is 400V AC; exceeding that could cause failure; buyers need clarity for system compatibility.

MPN
5SJ4308-8HG42