The 2-pole design switches both phase conductors but does not switch the neutral. It's rated for universal current (AC/DC), so it can go on a DC bus or an AC branch without swapping the breaker type. Ambient temperature derating applies above 40 °C — the unit is tested to 75 °C with humidity limits per.
Siemens 5SY5204-7 SENTRON MCB, 2-pole C-curve, 400 V AC / 44
MPN5SY5204-7
Active
Siemens SENTRON 5SY5204-7 miniature circuit breaker, 2-pole, C-curve, 400 V AC / 440 V DC, 10 kA (EN 60898-2), 2 MW, IP20.
$77.66 – $172.83Ref. 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 breaker |
| Brand name | SENTRON |
| Application environment | universal current |
| Parameter | Value |
|---|---|
| Number of poles | 2 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Modular width units | 2 |
| 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 |
| Parameter | Value |
|---|---|
| At AC rated value | 400 V |
| According to EN 60898 rated value | 10 kA |
| With single-phase operation at AC rated value | 440 V |
| Energy Limitation Class | 3 |
Product details
Frequently asked questions
What compliance documentation does Siemens provide for the 5SY5204-7?
The breaker is certified to IEC / EN 60898-2 and UL1077. It is halogen-free and silicon-free. RoHS, REACH, and CE declarations are standard for Siemens SENTRON products, though specific document references are not in this record.
MPN
5SY5204-7