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Schneider Electric A9F44320 — Acti9 iC60N (Disbo) Miniature Circuit Breaker
A 3-pole, 20 A, C-curve thermal-magnetic miniature circuit breaker (MCB) from the Schneider Acti9 range. The A9F4-prefix is the "Disbo" trade-channel variant of the iC60N — electrically and mechanically identical to the standard iC60N, intended for distributor/trade distribution.
Key Technical Specifications
表格
| Item |
Specification |
| Product range |
Acti9 iC60N (Disbo channel variant) |
| Catalog number |
A9F44320 |
| Device type |
Miniature circuit breaker (MCB) |
| Number of poles |
3P (3 protected poles) |
| Rated current (In) |
20 A (at 40 °C) |
| Trip curve |
C (magnetic trip 5 … 10 In) |
| Rated operational voltage (Ue) |
400 V AC (3P) |
| Rated insulation voltage (Ui) |
500 V AC |
| Rated impulse voltage (Uimp) |
6 kV |
| Breaking capacity |
6 kA at 400 V AC (IEC/EN 60898-1); 10 kA at 230/400 V AC (IEC/EN 60947-2) |
| Frequency |
50/60 Hz |
| Tripping technology |
Thermal-magnetic (bimetal + solenoid) |
| Isolation |
Suitable as industrial isolator per IEC/EN 60947-2 |
| Network type |
AC / DC |
| Overvoltage category |
III |
| Pollution degree |
3 |
| Mounting |
35 mm DIN rail (EN 60715) |
| Connection |
Screw terminals, up to 25 mm² |
| Width |
3 modules (54 mm) |
| Standards |
IEC/EN 60898-1, IEC/EN 60947-2 |
| Accessories |
Plug-in auxiliary contacts, shunt/undervoltage releases, Vigi residual-current modules |
Advantages & Features
- Three-pole simultaneous switching — breaks all three phases together, suited to 3-phase loads and balanced distribution.
- Same platform as iC60N — identical electrical performance, dimensions and accessory compatibility; the Disbo prefix only denotes the trade/distribution sales channel.
- Dual breaking rating — 6 kA to IEC 60898-1 and 10 kA to IEC 60947-2, covering building and industrial panel duty.
- C-curve tripping — 5–10 In magnetic trip suits general 3-phase loads with moderate inrush (distribution, heaters, UPS, small motors).
- VisiSafe — terminal shutters and visible load-side isolation for safer wiring and maintenance.
- Visitrip — clear trip indication identifies the faulty circuit at a glance.
- Modular Acti9 ecosystem — plug in OF/SD auxiliaries, shunt trips and Vigi RCBO attachments without tools.
- Industrial isolation rating — certified as a disconnection device per IEC/EN 60947-2.
- Cost-effective trade-channel SKU — same Schneider quality at a distributor-friendly price point for high-volume panel and contractor use.
Typical Applications
- Three-phase feeder and branch-circuit protection in distribution boards
- Small 3-phase motors, pumps, fans and compressors (with overload coordination)
- 3-phase UPS, battery-charger and transformer secondary protection
- HVAC, refrigeration and building-services distribution
- Industrial control panels and automation cabinets
- OEM machine builders, panel builders and electrical contractors
- Commercial, industrial and infrastructure electrical installations
Notes / Considerations
- Disbo = trade-channel SKU — electrically identical to standard iC60N (e.g. A9F74320 3P 20A C), but confirm your procurement channel accepts Disbo-part-numbered stock if the project specifies the standard A9F7 prefix.
- C-curve is not for direct-on-line motor starting — for DOL motors, use a D-curve MCB or a dedicated motor-protective circuit breaker (GV2/GV3).
- Verify available fault current at the panel does not exceed the applicable breaking rating (6 kA per IEC 60898-1 at 400 V).
- For earth-leakage / shock protection, add a Vigi iC60 attachment or upstream RCCB — this MCB alone does not provide residual-current protection.
- Torque line/load conductors to the recommended value; do not exceed 25 mm² per terminal.
- Use only Schneider-approved Acti9 accessories; third-party add-ons may void the listing.
- Always de-energize upstream supply before working on the breaker; VisiSafe does not replace lockout/tagout.
- For DC circuits, confirm the DC voltage and pole arrangement against the datasheet — DC breaking is lower than AC and may require series-pole use.
- Coordinate with upstream breakers for selectivity; the 20 A C-curve should be backed by a higher-rated upstream device to maintain discrimination.
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