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Siemens 5SJ4120-7HG41 — 1-Pole MCB (DIN Rail)

Siemens 5SJ4120-7HG41 SENTRON MCB, 1P, C-curve, 10kA/15kA

MPN5SJ4120-7HG41
Active

Siemens SENTRON 5SJ4120-7HG41, 1-pole miniature circuit breaker, C characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 18 mm width, DIN rail mount.

$30.48Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SJ4120-7HG41 — Identification
ParameterValue
Product designationMiniature circuit breakers
Brand nameSENTRON
Number of poles1
Pole design1P
Application suitabilityMechanical engineering / industry
5SJ4120-7HG41 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Overvoltage category3
5SJ4120-7HG41 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodon standard mounting rail
Combined terminal, topYes
Combined terminal, bottomYes
Width18 mm
Height110 mm
Depth70 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SJ4120-7HG41 — Environmental
ParameterValue
IP protection classIP20, with connected conductors, IP 40 in the handle range
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

Its 10 kA breaking capacity per EN 60898 covers most commercial and light-industrial fault levels; the 15 kA rating per IEC 60947-2 gives headroom for higher-fault installations where the utility transformer is close or the panel SCCR demands it. Rated at 400 V AC and 60 V DC, it handles single-phase loads up to the C-curve's magnetic trip threshold (5–10× In) — typical for motor starters, lighting circuits, and general-purpose branch protection where moderate inrush is expected.

Sourcing, lifecycle, and compliance

The part carries IP20 protection with connected conductors (IP40 in the handle area), is halogen-free and silicon-free, and is rated for ambient temperatures from -40 °C to 75 °C — suitable for unheated enclosures and outdoor-adjacent installations. Compliance documentation (RoHS, REACH, manufacturer declarations) is available upon request as part of the RFQ package — the brand supports full material and regulatory disclosure for OEM and panel-builder traceability.

Frequently asked questions

What is the breaking capacity of the 5SJ4120-7HG41?

10 kA per EN 60898 and 15 kA per IEC 60947-2. The higher IEC rating gives fault-current headroom for installations with higher available short-circuit current.

Will 5SJ4120-7HG41 drop into a panel specified around 5SY4116-7CV?

Both are 1-pole, 18 mm wide DIN-rail MCBs with C characteristic, so the 5SJ4120-7HG41 fits the same physical footprint and rail slot. Verify the rated current matches your branch-circuit load before swapping.

Where can I buy the 5SJ4120-7HG41?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial response.

MPN
5SJ4120-7HG41