Voltage ratings: 400 V AC and 60 V DC maximum. AC rating covers standard 400 V three-phase line-to-line panels. Physical footprint: 18 mm width — one modular unit on standard DIN rail. Depth is 70 mm, height 121 mm. The combined terminal design at both top and bottom accepts multiple conductor types without tunnel terminals. IP20 with connected conductors, IP40 in the handle area — standard for panel-mount breakers; not rated for wet or dusty environments without an enclosure.
Siemens SENTRON 5SJ4120-7HG42 MCB, 1P, C-curve, 10/15 kA
MPN5SJ4120-7HG42
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Siemens SENTRON 5SJ4 series miniature circuit breaker, 1-pole, C tripping characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC / 60 V DC, 18 mm width.
$30.48Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 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 | C |
| 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 | 121 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
MPN
5SJ4120-7HG42