The Siemens circuit breaker, model 5SY42027, is designed for 2 A current ratings and supports 230 V and 400 V applications. It offers robust protection for electrical installations by automatically cutting off power during overloads or short circuits. Typically used in residential and commercial settings, it ensures safety and reliability in electrical networks.
| Type |
Circuit breaker |
| Additional equipment possible |
TRUE |
| Built-in depth |
70mm |
| Compatible with (details) |
SENTRON |
| Concurrently switching neutral conductor |
FALSE |
| Current limiting class |
3 |
| Degree of protection (IP) |
IP20 |
| Depth |
76mm |
| Dim |
(W x H x D) 36 x 90 x 76 mm |
| Factory colour |
Grey |
| Frequency |
50-60MHz |
| Height |
90mm |
| Nominal current |
2A |
| Nominal current - rounded value |
2A |
| Number of pins |
2 |
| Number of poles (total) |
2 |
| Number of protected poles |
2 |
| Operating voltage |
440V |
| Overvoltage category |
3 |
| Pollution degree |
3 |
| Rated Current |
2A |
| Rated impulse withstand voltage Uimp |
4 |
| Rated insulation voltage Ui |
440V |
| Rated short-circuit breaking capacity Icn according to EN 60898 at 230 V |
10kA |
| Rated short-circuit breaking capacity Icn according to EN 60898 at 400 V |
10kA |
| Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 230 V |
35kA |
| Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 400 V |
35kA |
| Rated voltage |
400V |
| Release characteristic |
C |
| Release characteristics |
C |
| RoHS-compliant |
Yes |
| Switch-off capacity |
5kA |
| Voltage type |
AC |
| Width |
36mm |
| Width in number of modular spacings |
2 |
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