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The Schneider Electric A9F44120 is a single pole miniature circuit breaker rated 20A with a C trip curve, from the Acti9 iC60N Disbo range. The A9F44120 is rated 6000A Icn to EN/IEC 60898-1 and 10kA Icu at 220 to 240V AC to EN/IEC 60947-2. It carries Category A utilisation classification and switches both AC and DC circuits. The breaker occupies two 9mm module pitches and clips onto DIN rail.
A 20A subcircuit generally carries the heavier fixed loads on a board: air conditioning, an oven, or a workshop power run. Boards that also distribute DC control or battery supplies need a breaker certified for both networks. A DC arc has no zero crossing to assist extinction, so the interrupting mechanism must be rated for DC duty. The A9F44120 is rated for AC and DC networks, with DC operation to 72V and a C characteristic that handles motor and compressor inrush.
Stocking a single breaker certified for both duties cuts the number of part numbers carried on the van. The A9F44120 mounts on standard DIN rail across two 9mm module pitches, so board layout and switchboard schedules stay unchanged. Terminals accept 25mm² rigid or 16mm² flexible conductor, which lands the heavier tails typical on a 20A run without an adaptor. The padlocking provision supports isolation before downstream work starts.
The A9F44120 is not a residual current device and provides no earth leakage protection on its own. It is rated IP20, so it must be installed inside a switchboard or enclosure and is not suitable for exposed or wet locations. DC use is limited to 72V, so it should not be fitted to higher voltage DC circuits.
(A9F44120)
Installing a miniature circuit breaker in a switchboard is licensed electrical work in Australia and must be carried out by a licensed electrician. The breaker clips onto rail, occupies two 9mm module pitches, and terminals are tightened to 2 N.m at the top or bottom connection.
The C curve sets magnetic tripping at eight times rated current, plus or minus 20 percent. On a 20A device that works out at roughly 160A. The curve suits circuits where starting inrush from compressors, pumps, motors or control transformers would nuisance trip a lower curve.
The A9F44120 is rated for AC and DC networks. Rated operational voltage covers 12 to 60V AC, 100 to 133V AC, 220 to 240V AC, 12 to 60V DC, and 60 to 72V DC. DC breaking capacity is 15kA Icu to 60V and 10kA Icu to 72V.
Each terminal accepts a single conductor, top or bottom, from 1 to 25mm2 rigid or 1 to 16mm2 flexible. Wire stripping length is 14mm and tightening torque is 2 N.m for either the top or bottom connection.
Schneider Electric rates the mechanism at 20,000 mechanical operations and 10,000 electrical operations. Ambient air temperature for operation runs from -35 to 70 degrees C, storage from -40 to 85 degrees C, and relative humidity up to 95 percent at 55 degrees C.
Schneider Electric publishes a contractual warranty of 18 months on the Acti9 iC60N Disbo, covering manufacturing defects and running from the date of invoice. Installation must be carried out by a licensed electrician, and work carried out by an unlicensed person voids the warranty.
The Acti9 iC60N Disbo provides overload and short-circuit protection only, with no earth leakage function built in. Earth leakage protection comes from a separate block on the board. Where residual current protection is required under AS/NZS 3000, a separate residual current device or a combined unit must be specified.
The Schneider Electric A9F44120 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Warranty starts from Invoice Date
Domestic Use: 18 Months
Commercial Use: 18 Months
Warranty Method: Clipsal in home warranty
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Clipsal by Schneider Electric |
| SKU | A9F44120 |
| Model # | A9F44120 |
| Barcode # | 3606480513145 |
| Package Weight | 0.106kg |
| TYPE | VALUE |
|---|---|
| Type | Circuit Protection |
| Brand | Schneider Electric |
| Range | Acti9 |
| Colour | White |
| Rated Current (A) | 20 |
| Height (mm) | 85 |
| Width (mm) | 18 |
| Depth (mm) | 78.5 |
| Protection | C Curve |
| Voltage (V) | 240 |
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