RCB S24 automatic reconnection
S24 automatic reconnection RCDs: S24 automatic reset residual current protection for installations requiring continuity.
- Reset: three attempts in AUTO mode, at intervals of 10, 60 and 300 seconds, as specified in the manual.
- Series: S24 modular format for DIN boards.
- Classes: available solutions for Class A and Class AC needs.
- Use: remote, unattended or continuity-critical installations.
S24 automatic reconnection RCDs: operation and selection
Solera reference S24DR2P4030 combines Type AC residual current protection with automatic reconnection. It is published as 2P, 40 A, 30 mA, 230 V AC at 50/60 Hz and five 18 mm modules. It may be considered for restoring service following temporary earth-fault trips where the application permits automatic resetting.
Published reference data
| Reference | Type | Rated current | Sensitivity | Modules |
|---|---|---|---|---|
| S24DR2P4030 | AC | 40 A | 30 mA | 5 |
Reset sequence and operating conditions
Instructions IM-S24DR2P4030 ed1 describe three reset attempts with intervals of 10, 60 and 300 seconds and explain the sequence reset at 15 minutes. AUTO mode enables automatic resetting; MANUAL mode disables it. The manual does not describe a prior insulation check, so this function must not be attributed to the product.
Before selection, check that automatic restoration of power is acceptable for connected equipment and allow five modules for the assembly. The manual states that it does not protect against overloads or short circuits and requires a monthly residual-current function check using the test button.
Frequently asked questions
Is this reference Type A or high immunity?
S24DR2P4030 is declared Type AC. Automatic reconnection does not change its detection type or establish high immunity. Where the load requires another type, select and validate an appropriate solution.
How many times does it attempt to reconnect, and at what intervals?
The manual specifies three attempts, at intervals of 10 s, 60 s and 300 s. Consult its diagram for the sequence reset at 15 minutes and AUTO/MANUAL operation. This is not unlimited, immediate reconnection.
Does automatic resetting remove the need to investigate a fault?
No. The manual addresses temporary earth faults and states that a professional must check the product and installation in the event of faults or malfunction. Reconnection does not repair the source of leakage or replace maintenance.