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Siemens 5SJ4310-8HG42 — 3-Pole MCB (DIN Rail)

Siemens 5SJ4310-8HG42 SENTRON MCB, 3P D-Curve, 10kA/15kA

MPN5SJ4310-8HG42
Active

Siemens SENTRON 5SJ4310-8HG42, 3-pole miniature circuit breaker, D tripping characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2, 400 V AC / 60 V DC, 3 modular width units, DIN-rail mount.

$123.19Ref. price · indicative, final on quote
Siemens 5SJ4310-8HG42 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SJ4310-8HG42 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationMechanical engineering / industry
5SJ4310-8HG42 — 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
5SJ4310-8HG42 — Electrical
ParameterValue
Supply frequency range50/60 Hz
Power loss per pole at rated current (AC, hot)1.3 W
Mechanical service life (operating cycles, typ.)10 000
Neutral conductor switchingNo
5SJ4310-8HG42 — 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
5SJ4310-8HG42 — 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

It's rated for 400 V AC and 60 V DC, with a breaking capacity of 10 kA per EN 60898 and 15 kA per IEC 60947-2. That dual rating means it's certified for both residential/commercial (EN 60898) and industrial (IEC 60947-2) installations — a useful overlap if your panel spec calls for the higher industrial standard.

The D characteristic (10–20× In magnetic trip) is the right choice for loads with a high starting surge — think motor contactors, solenoid valves, or power supplies that pull several times their running current for a few cycles. A B-curve breaker would nuisance-trip on that inrush; a D-curve holds through it. In a panel with a high available fault current — say, close to a transformer — the 15 kA IEC rating is the one to spec against.

Environmental and compliance specs

Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz for 4 seconds.

Frequently asked questions

Where can I buy 5SJ4310-8HG42 and how do I get a price?

Sourced through independent industrial distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, no stock count or price listed here.

What is 5SJ4310-8HG42's listed depth (70 mm) on this component line?

The installed depth is 70 mm, which is the dimension from the DIN rail to the front of the handle. Plan for that clearance behind the panel door.

What is 5SJ4310-8HG42's listed width (54 mm) on this component line?

Width is 54 mm, which corresponds to 3 modular width units (each 18 mm) on a standard DIN-rail panel.

Will 5SJ4310-8HG42 drop into a panel that was specified around 5SY4140-7 without rewiring?

The 5SJ4 series uses the same 3-module DIN-rail footprint and combined tunnel terminals as the 5SY4 series, so it fits the same physical space and accepts the same conductor sizes. Terminal torque spec is identical at 3.5 Nm. No rewiring needed for the connection points, but verify the D-curve and breaking capacity match your circuit requirements — the 5SY4140-7 may have different ratings.

What compliance documentation does this brand provide for 5SJ4310-8HG42 (RoHS, REACH, UL, IEC)?

The part carries dual certification to EN 60898 (10 kA) and IEC 60947-2 (15 kA). It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes the declaration of conformity for these standards. RoHS and REACH compliance is typical for the SENTRON line; request the specific declaration from your distributor.

MPN
5SJ4310-8HG42