Rated at 10 kA per EN 60898 and 15 kA per IEC 60947-2, this breaker safely interrupts fault currents up to those levels at 400 V AC. The higher IEC rating applies when the breaker is used in industrial distribution (IEC 60947-2 scope); the EN 60898 rating covers residential/commercial installations. On the DC side, it is rated for 60 V — enough for control-circuit protection in 48 V or 60 V DC bus systems. The insulation voltage (Ui) is 440 V AC, confirming the breaker is suitable for 400 V line-to-line systems with adequate margin.
Siemens 5SJ4140-8HG40 SENTRON MCB, 1P, D-curve, 10 kA
MPN5SJ4140-8HG40
Active
Siemens SENTRON 5SJ4 series, miniature circuit breaker, 1-pole, D characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 1 MW unit, DIN rail mount.
$40.64Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breakers |
| Brand name | SENTRON |
| Number of poles | 1 |
| Pole design | 1P |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Overvoltage category | 3 |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Fastening method | on standard mounting rail |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 mm |
| Height | 90 mm |
| Depth | 70 mm |
| Installation depth | 70 mm |
| Modular width units | 1 |
| Torque, min. | -40 °C |
| Torque, max. | 75 °C |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| IP protection class | IP20, with connected conductors, IP 40 in the handle range |
| Pollution degree | 3 |
| Halogen-free | Yes |
| Silicone-free | Yes |
Product details
Frequently asked questions
What is the breaking capacity of 5SJ4140-8HG40?
It is rated 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, with a DC rating of 60 V.
What does the D characteristic mean for this breaker?
The D curve allows higher inrush currents (typically 10–20 times rated current) before tripping, making it suitable for motor, transformer, and welding loads that draw a high start-up surge.
Where can I buy 5SJ4140-8HG40 and get current pricing?
This part is 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 quote.
What is the width and depth of 5SJ4140-8HG40?
Width is 18 mm (one modular unit), depth is 70 mm, height is 90 mm — standard dimensions for a 1-pole DIN-rail MCB.
MPN
5SJ4140-8HG40