The Schneider Electric A9N18511 is a 3-pole miniature circuit breaker from the Acti9 C120 range, rated 63 A at 30 °C with a D curve that trips magnetically at 10 to 14 times In. Thermal-magnetic trip element handles both overload and short-circuit protection for distribution circuits. Breaking capacity is 15 kA Icn at 400 V AC per EN/IEC 60898-1 and 10 kA Icu at 440 V AC per EN/IEC 60947-2 — enough for commercial panels and light industrial sub-distribution. Applied in distribution boards for motor circuits and resistive loads where the D curve tolerates high inrush without nuisance tripping.
Schneider Electric A9N18511 Acti9 C120 63A 3P MCB, D Curve
MPNA9N18511
Active
Schneider Acti9, Acti9 C120, miniature circuit-breaker A9N18511, 3P, 63 A, curve D, 15 kA Icn.
$378.00Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
How we verify every order →Specifications
| Parameter | Value |
|---|---|
| Control type | Toggle |
| Network type | AC |
| Product or component type | Miniature circuit-breaker |
| Voltage | 500 V AC 50/60 Hz conforming to EN/IEC 60947-2 |
| [Ue] rated operational voltage | 380...415 V AC 50/60 Hz 220...240 V AC 50/60 Hz 440 V AC 50/60 Hz 230...400 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 6 kV conforming to EN/IEC 60947-2 |
| Breaking capacity | 15000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 10 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 30 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at <= 375 V DC conforming to EN/IEC 60947-2 |
| Current | 63 A at 30 °C |
| [Ics] rated service breaking capacity | 7500 A 50 % conforming to EN/IEC 60898-1 - 400 V AC 50/60 Hz 5 kA 50 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 15 kA 50 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 7.5 kA 50 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 15 kA 100 % conforming to EN/IEC 60947-2 - <= 375 V DC |
| Network frequency | 50/60 Hz |
| Poles description | 3P |
| Number of protected poles | 3 |
All specifications
| Parameter | Value |
|---|---|
| IP degree of protection | IP20 conforming to IEC 60529 |
| Mounting mode | Clip-on |
| Mounting support | 35 mm symmetrical DIN rail |
| Wire stripping length | 15 mm |
| Connections - terminals | Tunnel type terminals1...50 mm² rigid Tunnel type terminals1.5...35 mm² flexible |
| Pollution degree | 3 conforming to IEC 60947-2 |
| Relative humidity | 95 % at 55 °C |
| Operating altitude | 2000 m |
| Depth | 73 mm |
| Width | 81 mm |
| Color | White |
| Height | 81 mm |
| Electrical durability | 10000 cycles conforming to IEC 60947-2 |
| Mechanical durability | 20000 cycles |
| Standards | EN/IEC 60898-1 EN/IEC 60947-2 |
| Range | Acti9 |
| Curve code | D |
| 9 mm pitches | 9 |
| Tropicalisation | 2 conforming to IEC 60068-1 |
| Limitation class | 3 conforming to EN/IEC 60947-2 |
| Local signalling | ON/OFF indication |
| Device short name | C120H |
| Tightening torque | 3.5 N.m |
| Device application | Distribution |
| Overvoltage category | IV |
| Trip unit technology | Thermal-magnetic |
| Magnetic tripping limit | 10...14 x In |
| Earth-leakage protection | Separate block |
| Suitability for isolation | Yes conforming to IEC 60947-2 |
| Contact position indicator | Yes |
| Locking options description | Handle sealable with cable diameter 0.7mm in OFF or ON position |
| Ambient air temperature for storage | -40...70 °C |
| Ambient air temperature for operation | -30...60 °C |
| Comb busbar and distribution block compatibility | YES |
Product details
Frequently asked questions
What is the A9N18511's listed depth?
The depth is 73 mm, per the specification.
What is the range of the A9N18511?
It belongs to the Acti9 range, specifically the Acti9 C120 product name.
What compliance standards does the A9N18511 meet?
It conforms to EN/IEC 60898-1 and EN/IEC 60947-2. It also has tropicalisation class 2 per IEC 60068-1 and pollution degree 3 per IEC 60947-2.
MPN
A9N18511