The Acti9 iDPN series is a compact 1P+N miniature circuit breaker that switches the phase and neutral together in a single device for single-phase final circuits. Standard two-module versions are available in iDPNa, iDPNN and iDPNH breaking-capacity segments, while the wider iDPNK2 version covers higher-current feeders up to 63 A.
The Schneider Electric Acti9 iDPN 1P+N Miniature Circuit Breaker (MCB) is designed for single-phase low-voltage electrical distribution systems, providing protection against overloads and short-circuit faults. With a compact modular design and simultaneous switching of phase and neutral conductors, the series is suitable for final circuit protection in residential, commercial and light industrial installations. Featuring thermal-magnetic tripping technology, DIN-rail mounting and multiple rated current options, Acti9 iDPN circuit breakers offer practical protection and flexible integration into electrical distribution boards.
The Acti9 iDPN series uses thermal-magnetic trip technology to protect electrical circuits against overload and short-circuit currents. The thermal release responds to sustained overload conditions, while the magnetic release provides rapid disconnection during short-circuit faults. Available tripping characteristics vary by product version, allowing circuit breakers to be selected according to load characteristics and installation requirements.
Designed with a 1P+N configuration, the iDPN circuit breaker provides overcurrent protection on the phase conductor while switching both phase and neutral conductors simultaneously. The neutral pole is switched but does not provide independent overcurrent protection. This arrangement allows both conductors to be disconnected together, supporting safer circuit isolation during maintenance and inspection.
The Acti9 iDPN series features a modular design for installation in low-voltage distribution boards. Its DIN-rail mounting structure supports convenient installation and replacement, while the compact 1P+N configuration helps optimize space within electrical enclosures. Positive contact indication and clear operating status markings allow users to identify the switching position more easily. Selected versions also feature a mechanical fault-trip indicator for identifying circuit breaker operation following an electrical fault.
The Acti9 iDPN 1P+N MCB series is suitable for single-phase branch circuit protection in residential buildings, commercial facilities, office spaces and light industrial electrical installations. Typical applications include lighting circuits, socket outlets, small electrical equipment and individual distribution branches where simultaneous phase and neutral disconnection is required.
The Acti9 iDPN 1P+N range includes multiple rated current and breaking capacity options to accommodate different circuit protection requirements. When selecting a suitable model, key parameters include:
Pole Configuration: 1P+N, with overcurrent protection on the phase pole.
Rated Current (In): Multiple options are available, with specific product versions covering 1–40 A.
Rated Voltage: Typically 230 V AC for single-phase applications.
Tripping Characteristics: B, C and D curves are available across different iDPN versions.
Breaking Capacity: Depends on the specific model, with different versions offering different short-circuit ratings.
Installation: DIN-rail mounting for modular electrical distribution boards.
Configuration Note: Rated current, tripping characteristics, breaking capacity and product dimensions vary by specific iDPN model. Residual-current protection is not an integrated function of the standard MCB and requires a compatible separate protective device where necessary. Please confirm the complete product reference and technical documentation before ordering.
| Item | Specification |
| Series | Acti9 iDPNa / iDPNN / iDPNH / iDPNK2 |
| Product Type | 1P+N miniature circuit breaker; neutral pole is switched but not protected |
| Rated Current | iDPNa: 6–40 A; iDPNN / iDPNH: 2–40 A; iDPNK2: 10–63 A |
| Configuration / Width | 1P+N; two modules for iDPNa / iDPNN / iDPNH; four modules for iDPNK2 |
| Tripping Curves | C / D for iDPNa, iDPNN and iDPNH; C only for iDPNK2 |
| Breaking Capacity | iDPNa: 4.5 kA; iDPNN: 6 kA; iDPNH: 10 kA; iDPNK2: 6 kA |
| Rated Voltage | 230 V AC, 50/60 Hz for standard iDPN versions |
| Insulation / Impulse Rating | Standard versions: Ui 400 V AC / Uimp 4 kV; iDPNK2: Ui 500 V / Uimp 6 kV |
| Standards | IEC/EN 60898-1 and GB/T 10963.1; CCC and CE listed by version |
| Protection Degree | IP20 at device; IP40 in distribution board; insulation class II |
| Ambient Temperature | Operating −25°C to +60°C; storage −40°C to +80°C |
| Mounting / Wiring | 35 mm DIN rail; top or bottom feed; 1–16 mm² conductor range listed for standard versions |
| Typical Applications | Single-phase lighting, socket outlets, small appliances and panel isolation of phase/neutral circuits |
| Model | Breaking Capacity | Rated Current | Curve | Code Family / Example |
| iDPNa | 4.5 kA | 6–40 A | C / D | A9P08xxx (C); A9P09xxx (D) |
| iDPNN | 6 kA | 2–40 A | C / D | A9P18xxx (C); A9P19xxx (D) |
| iDPNH | 10 kA | 2–40 A | C / D | A9P28xxx (C); A9P29xxx (D) |
| iDPNK2 | 6 kA | 10–63 A | C only | A9F186xx family; four-module version |
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