It's rated for 70 kA interrupting capacity at 400 V AC per IEC 60947-2, and 5 kA per UL 1077 — that 70 kA figure means it can clear a bolted fault on a high-capacity industrial distribution board without the arc flashing upstream, which is what you need when the transformer is right around the corner.
Siemens 5SY8102-7 SENTRON MCB, 1P C-curve, 70 kA IEC
MPN5SY8102-7
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Siemens SENTRON 5SY8102-7, 1-pole miniature circuit breaker, C characteristic, rated 70 kA at 400 V AC per IEC 60947-2, 5 kA per UL 1077, 18 mm wide, IP20.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Number of poles | 1 |
| Pole design | 1P |
| Application suitability | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Overvoltage category | III |
| Parameter | Value |
|---|---|
| Mounting position | any |
| Fastening method | Quick assembly system |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Width | 18 mm |
| Height | 90 mm |
| Depth | 76 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 |
| Pollution degree | 3 |
| Halogen-free | Yes |
| Silicone-free | Yes |
Product details
Frequently asked questions
What are the key ratings of the 5SY8102-7?
It's a 1-pole C-curve MCB rated for 70 kA at 400 V AC per IEC 60947-2, 15 kA at 60 V DC per IEC 60947-2, and 5 kA per UL 1077. It's 18 mm wide and fits a standard DIN rail.
Where can I buy the 5SY8102-7 and get a price?
We source this part to order against an RFQ. Submit the line item and we'll confirm availability and current pricing at quote time.
What compliance documentation does the 5SY8102-7 carry?
It's certified to IEC / EN 60947-2 and UL1077, is halogen-free and silicon-free, and is rated for pollution degree 3 and overvoltage category III.
MPN
5SY8102-7