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Siemens 5SJ4308-8HG42 — 3-Pole MCB (DIN Rail)

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

Specifications

5SJ4308-8HG42 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SJ4308-8HG42 — Protection
ParameterValue
Tripping characteristic (curve)D
Breaking capacity per EN 6089810 kA
Breaking capacity per IEC 60947-215 kA
Overvoltage category3
IP protection classIP20, with connected conductors, IP 40 in the handle range
Pollution degree3
5SJ4308-8HG42 — Electrical
ParameterValue
Supply frequency range50/60 Hz
Power loss per pole at rated current (AC, hot)2.6 W
Mechanical service life (operating cycles, typ.)10 000
Neutral conductor switchingNo
5SJ4308-8HG42 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height121 mm
Depth70 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodon standard mounting rail
SealableYes
Accepts supplementary devicesYes
5SJ4308-8HG42 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Vibration resistance (IEC 60068-2-6)±1 mm at 5 to 25 Hz; 50 m/s² at 25 to 150 Hz

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