Siemens SENTRON RC unit electronic, 4-pole, type AC, In: 40 A, 100 mA, Un AC: 400 V, 50 Hz, instantaneous design.
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Parameter | Value |
|---|---|
| Product designation | RC unit electronic |
| Product design / construction | Instantaneous |
| Parameter | Value |
|---|---|
| At AC | 40 A |
| Residual current type | AC |
| At 40 °C / rated value | 37.2 A |
| At 45 °C / rated value | 37.2 A |
| At 50 °C / rated value | 36 A |
| At 55 °C / rated value | 34.8 A |
| At 60 °C / rated value | 34 A |
| At 65 °C / rated value | 33.2 A |
| At 70 °C / rated value | 32 A |
| Tripping fault current | 100 mA |
| Supply voltage frequency | 50 Hz |
The Siemens 5SM9442-0KK is a SENTRON residual current unit — an RC unit electronic, 4-pole, type AC, rated 40 A at 400 V AC with a 100 mA trip threshold. It's an instantaneous design, meaning no intentional time delay; it trips as soon as the residual current exceeds 100 mA.
Above that, the unit derates: 37.2 A at 45 °C, 36 A at 50 °C, 34.8 A at 55 °C, 34 A at 60 °C, 33.2 A at 65 °C, and 32 A at 70 °C.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote.
It is a 4-pole unit, switching all four conductors (three phases plus neutral) simultaneously.
No — the 5SL4363-7 is a 3-pole miniature circuit breaker, not an RCD. The 5SM9442-0KK is a 4-pole residual current unit with a different function and wiring scheme. They are not drop-in interchangeable.
No related articles