Technical Information
| Item condition |
New |
| Manufacture name |
RCCB, 4-pole, type B, short-time delayed, In: 40 A, 300 mA |
| Brand |
Siemens
|
| Categories |
RCCB - (Residual Current Breakers)
|
| Country of origin* |
DE |
|
* The actual country of origin may differ depending on the delivery batch.
To confirm the specific country of origin, please contact your account manager.
|
| Harmonized System Code |
8536 2010 00
|
| Rated current |
40 A |
| Rated voltage |
400 V |
| Rated insulation voltage Ui |
0 V |
| Number of poles |
4 |
| Rated fault current |
0.3 A |
| Leakage current type |
B |
| Selective protection |
No |
| Short-circuit breaking capacity (Icw) |
10 kA |
| Surge current capacity |
3 kA |
| Short-time delayed tripping |
Yes |
| Frequency |
50 Hz |
| Rated impulse withstand voltage Uimp |
0 kV |
Packing details
| Packing level 1 |
4001869549071 |
Other Technical data
| Mounting method |
DIN rail |
| Built-in depth |
70 mm |
| Pollution degree |
0 |
| Width in number of modular spacings |
4 |
| Explosion-proof |
No |
| Degree of protection (IP) |
IP20 |
| Connectable conductor cross section solid-core |
0.75-35 mm² |
| Connectable conductor cross section multi-wired |
0.75-35 mm² |
| With interlocking device |
Yes |
| Ambient temperature during operating |
-25-45 °C |
| Additional equipment possible |
Yes |
Description
An RCCB is a protective device designed to detect leakage currents in electrical systems and disconnect the circuit when a fault occurs. Its core function is to safeguard people and equipment by preventing electric shock hazards and reducing fire risks caused by earth faults.
### Electrical Characteristics
- Type B design: Intended for detection of alternating, pulsating direct, and smooth DC leakage currents.
- Current rating (In): Supports up to 40 A nominal load current.
- Sensitivity: Rated at 300 mA for residual current threshold operation.
- Short-time delayed operation: Reduces nuisance tripping during transient events in high-inrush or fluctuating-load systems.
### Physical Configuration
- Poles: 4-pole model suitable for three-phase systems with neutral connection requirements.
- Installation method: DIN rail mount compatible — standard fit into distribution boards.
### Technical Notes & Limitations
- Not suitable for use without proper upstream overcurrent protection devices installed.
- Must be tested periodically with the integrated test button as per maintenance schedules — failure to test reduces reliability.
- Requires compatibility checking with system voltage levels; type B models are optimized for specific industrial setups including inverter-driven loads or EV chargers with DC components present.
- Designed for low-temperature environments within defined operational limits; exceeding these may cause malfunctions over time.