The Siemens SENTRON 5SJ6325-6 is a 3-pole miniature circuit breaker rated 25 A with a B tripping characteristic, designed for 400 V AC systems and a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. The 6 kA SCCR at 400 V is the interrupting rating under fault conditions; it safely clears short-circuits up to that level without upstream damage, verified to both the IEC 60898 domestic standard and the IEC 60947-2 industrial standard. It accepts solid or stranded conductors from 0.75 mm² up to 25 mm², and the terminals are sealable — important for utility or metering applications where tamper evidence is required. With IP20 protection (finger-safe when conductors are connected), it belongs inside a panel or enclosure, not exposed to washdown.
5SJ6325-6 SENTRON MCB, 3-pole B-curve 25 A 6 kA
Siemens SENTRON 5SJ6 series, miniature circuit breaker, 3-pole, B-curve, 25 A, 6 kA breaking capacity, 400 V AC, 70 mm depth.
Specifications
| Parameter | Value |
|---|---|
| Design / model code | 5SJ6 |
| Brand name | SENTRON |
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | B |
| Breaking capacity per EN 60898 | 6 kA |
| Breaking capacity per IEC 60947-2 | 6 kA |
| Overvoltage category | 3 |
| IP protection class | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Rated frequency | 50 Hz |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Installation depth | 70 mm |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of surrounding temperature | Periodically +55°C, max. 95% humidity |
Product details
Frequently asked questions
What does the B-curve mean on this 25 A MCB?
The B characteristic trips at 3 to 5 times the rated current (75–125 A magnetic trip), which suits resistive and lighting loads. It is not intended for high-inrush motor or transformer circuits — use a C or D curve for those.
Where can I buy or get a price for 5SJ6325-6?
This part is sourced and quoted to order against an RFQ through our independent distribution network. Contact us with your quantity and target price; we confirm availability and current pricing at quote time.
Will 5SJ6325-6 drop into a panel specified around 5SJ6220-6?
The 5SJ6325-6 is a 3-pole unit (3 width units), while the 5SJ6220-6 is 2-pole (2 width units). They share the same 70 mm depth, DIN-rail mount, and terminal range (0.75–25 mm²), but the 3-pole version takes one extra module width on the rail. If the panel was laid out for a 2-pole breaker, you need an additional width unit of space.