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Siemens 5SJ4310-8HG42 — Miniature Circuit Breakers (MCB)

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)
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

5SJ4310-8HG42 — Ratings
ParameterValue
Overvoltage category3
5SJ4310-8HG42 — Mechanical
ParameterValue
Width54 mm
Height121 mm
Depth70 mm

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