Siemens SIRIUS 3RV1421-1EA15 circuit breaker for transformer protection, 4 A rated at 400 V, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw and snap-on mounting onto 35 mm DIN rail.
| Parameter | Value |
|---|---|
| Series | SIRIUS |
| Product designation | circuit breaker |
| Parameter | Value |
|---|---|
| Rated voltage | 690 V |
| Rated voltage, AC-3 (max.) | 690 V |
| Rated impulse withstand voltage (Uimp) | 6 000 V |
| Number of poles | 3 |
| Power loss (AC, hot) | 7.25 W |
| Power loss, per pole (AC, hot) | 2.4 W |
| Parameter | Value |
|---|---|
| Trip class | CLASS 10 |
| Breaking capacity at 240 V (AC) | 100 kA |
| Breaking capacity at 400 V (AC) | 100 kA |
| Breaking capacity at 500 V (AC) | 100 kA |
| Breaking capacity at 690 V (AC) | 6 kA |
| Phase-failure detection | Yes |
| Ground-fault detection | No |
| Parameter | Value |
|---|---|
| Endurance, main contacts (typ.) | 100 000 |
| Switching frequency, AC-3 (max.) | 15 1/h |
| Parameter | Value |
|---|---|
| Main-circuit terminal type | screw-type terminals |
| Main-circuit connector arrangement | front side |
| Conductor cross-section, finely stranded with ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Parameter | Value |
|---|---|
| Height | 97 mm |
| Width | 45 mm |
| Depth | 96 mm |
| Mounting position | any |
| Parameter | Value |
|---|---|
| Operating temperature | -20 ... +60 °C |
| Storage temperature | -50 ... +80 °C |
| Transport temperature | -50 ... +80 °C |
| Parameter | Value |
|---|---|
| Design Of The Product | for transformer protection |
Width is 45 mm, depth 96 mm, height 97 mm.
Main circuit terminals are screw-type. Solid wire: 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²). Stranded: 2× (1…2.5 mm²) and 2× (2.5…6 mm²). Accepts standard ferrule sizes; strip length per Siemens terminal guidelines.
Shock rated at 25 g for 11 ms. Mounting position any. Maximum operating altitude 2 000 m without derating.
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
100 kA at 400 V AC, dropping to 6 kA at 690 V AC.
Solid: 2× (0.5…1.5 mm²) and 2× (0.75…2.5 mm²). Stranded: 2× (1…2.5 mm²) and 2× (2.5…6 mm²). Screw-type terminals.
96 mm depth, 45 mm width, 97 mm height.
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