Siemens SENTRON 5SY6 series, 5SY6204-8 miniature circuit breaker, 2-pole, D characteristic, 4 A rated current, 400 V AC, 30 kA (IEC 60947-2), 6 kA (EN 60898).
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Application environment | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Width | 36 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Mounting position | any |
| Min. | -40 °C |
| Max. | 75 °C |
| Protection degree (IP) | IP20, with connected conductors |
| Parameter | Value |
|---|---|
| Pollution degree | 3 |
The 30 kA rating at 400 V AC under IEC 60947-2 gives this breaker headroom for high-fault installations where a standard 6 kA domestic MCB would weld closed. Under UL 1077 and CSA C22.2 No. 235, the AC breaking capacity is 5 kA — a key figure if the panel requires North American listing marks.
Ambient range spans -40 °C to 75 °C, with humidity derating above 55 °C (max 95% RH at 55 °C, dropping to 35% at 75 °C).
30 kA per IEC 60947-2 at 400 V AC, 6 kA per EN 60898. For DC circuits it is rated 15 kA at 72 V DC. Under UL 1077 and CSA C22.2 No. 235 the AC rating is 5 kA.
The D curve trips magnetically at 10–20 times rated current (40–80 A for this 4 A unit), so it passes the inrush of motor starters, transformers, and welding equipment without opening on the start surge.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.
Both are 2-pole SENTRON MCBs on the same DIN-rail quick-assembly system, so the mechanical footprint is the same. The difference is electrical: 5SY6204-8 is a 4 A D-curve; the peer carries a different rating and characteristic. Verify the branch circuit load before swapping.
No related articles