For earth-leakage protection of circuits up to 40A, the Schneider A9R12440 Acti9 iID RCCB (4P, 100 mA, Type AC) is a widely used choice in distribution boards.
Replace a unit that no longer trips on test, or no longer latches, with the same rating (40A), sensitivity (100 mA) and type (Type AC).
See our Schneider Electric range.
Technical data
| Schneider reference | A9R12440 |
|---|---|
| Product or component type | Residual current circuit breaker (RCCB) |
| Poles description | 4P |
| Neutral position | Left |
| [In] rated current | 40 A |
| Network type | AC |
| Earth-leakage sensitivity | 100 mA |
| Earth-leakage protection time delay | Instantaneous |
| Earth-leakage protection class | Type AC |
| Device location in system | Outgoer |
| Network frequency | 50/60 Hz |
| [Ue] rated operational voltage | 400…415 V AC 50/60 Hz |
| Residual current tripping technology | Voltage independent |
| Rated breaking and making capacity | Idm 1500 A; Im 1500 A |
| Rated conditional short-circuit current | 10 kA |
| [Ui] rated insulation voltage | 500 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 6 kV |
| Contact position indicator | Yes |
| Width | 72 mm |
| Tightening torque | 3.5 N.m top or bottom |
| Electromagnetic compatibility | 8/20 µs impulse withstand, 250 A conforming to EN/IEC 61008-1 |
| Dimensions (W x H x D) | 72 x 85 x 69 mm |
| Condition | New, original Schneider Electric |
Main characteristics
- Residual current circuit breaker (RCCB)
- Acti9 iID
- 4P
- 40A
- AC type
- 100mA
Typical applications
- Earth-leakage protection of socket and lighting circuits
- Replacement of a faulty RCCB
- Protection of personnel in workshops and plants
- Incoming device of sub-distribution boards
Compatibility and replacement
Match poles (4P), rated current (40A), sensitivity (100 mA) and class (Type AC). Combine with suitable Acti9 circuit breakers for overload and short-circuit protection.
Frequently asked questions
Does it protect against short circuits?
No. An RCCB only detects earth leakage; use it together with circuit breakers. Schneider gives a rated conditional short-circuit current of 10 kA.
What sensitivity does it have?
100 mA, Type AC, per Schneider.
How often should I press the test button?
Follow local regulations; many installers test RCCBs every few months.
Which voltage is it for?
400…415 V AC 50/60 Hz per Schneider.
Can I get a price and delivery time?
Prices are quoted on request. Send the order number, quantity and delivery country on WhatsApp and we will reply with price and delivery time; air shipping is usually 5 to 7 days once ready, with a 1-year warranty.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
