Siemens SENTRON 5SY4305-7CC11 miniature circuit breaker, 3-pole, 0.5 A, C-curve, 10 kA breaking capacity per EN 60898, designed for railway applications.
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 3 |
| Pole configuration | 3P |
| Suitability for operation | Mechanical engineering / industry |
| Parameter | Value |
|---|---|
| Tripping characteristic (curve) | C |
| Overvoltage category | III |
| IP protection class | IP20, with connected conductors |
| Energy limitation class | 3 |
| Pollution degree | 3 |
| Parameter | Value |
|---|---|
| Rated current (AC) | 0.5 A |
| Rated voltage (AC, multi-phase) | 440 V |
| Neutral conductor switching | No |
| Parameter | Value |
|---|---|
| Modular width units | 3 |
| Mounting position | any |
| Width | 54 mm |
| Height | 90 mm |
| Depth | 76 mm |
| Installation depth | 70 mm |
| Terminal tightening torque, max. | 75 °C |
| Terminal tightening torque, min. | -40 °C |
| Combined terminal, top | Yes |
| Combined terminal, bottom | Yes |
| Fastening method | Quick assembly system |
| Sealable | Yes |
| Parameter | Value |
|---|---|
| Halogen-free | Yes |
| Silicone-free | Yes |
| Influence of surrounding temperature | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
The 0.5 A rating is at 35 °C ambient. At 40 °C the breaker derates to 0.46 A, at 50 °C to 0.41 A, and at 60 °C to 0.36 A. In a 55 °C railway cabinet, expect 0.39 A continuous capability. If your load draws 0.45 A at 50 °C, this breaker will nuisance-trip — step up to the 5SY4306-7CC11 (1 A) and protect downstream at the actual load current.
10 kA per EN 60898, which covers most sub-distribution and control panel branch circuits in industrial and railway installations.
Both are 3-pole SENTRON MCBs with the same 54 mm width (3 MW) and DIN-rail mounting. The 5SY4305-7CC11 is rated 0.5 A with a C curve, while the 5SY4301-7CV is a different rating — verify the ampacity and tripping characteristic match your branch circuit before substituting.
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time.
The breaker is designed for railway applications (EN 50155 scope), halogen-free and silicon-free. Standard Siemens declarations for CE, UKCA, and RoHS/REACH are available on request.
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