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Schneider Electric A9F05440 — Miniature Circuit Breakers (MCB)

Schneider Electric A9F05440 Acti9 iC60N MCB, 40 A, 4P, D Cur

MPNA9F05440
Active

Schneider Electric Acti9 iC60N, A9F05440, miniature circuit-breaker, 40 A, 4 poles, D curve, 10 kA Icn at 400 V AC, DIN rail, white.

Schneider Electric A9F05440 datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

A9F05440 — Identification
ParameterValue
Product nameActi9 iC60
Product rangeActi9
Product/component typeMiniature circuit-breaker
Device applicationDistribution

Ratings

A9F05440 — Ratings
ParameterValue
Rated current (In)40 A
Poles configuration4P
Number of protected poles4
Breaking capacity36 kA Icu at 12...133 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 6 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 6000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1
Rated service breaking capacity (Ics)27 kA 75 % conforming to EN/IEC 60947-2 - 12...133 V AC 50/60 Hz 15 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 7.5 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 4.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 10 kA 100 % conforming to EN/IEC 60947-2 - <= 250 V DC
Rated insulation voltage (Ui)500 V AC 50/60 Hz conforming to EN/IEC 60947-2
Rated impulse withstand voltage (Uimp)6 kV conforming to EN/IEC 60947-2
Network type (AC/DC)DC AC
Network frequency50/60 Hz
Utilisation categoryCategory A conforming to EN/IEC 60947-2
Overvoltage categoryIV

Protection

A9F05440 — Protection
ParameterValue
Curve codeD
Trip unit technologyThermal-magnetic
Magnetic tripping limit12 x In +/- 20 %
Earth-leakage protectionSeparate block
Suitability for isolationYes conforming to EN/IEC 60898-1 Yes conforming to EN/IEC 60947-2
Limitation class3 conforming to EN/IEC 60898-1
Electrical durability (cycles)10000 cycles
Mechanical durability (cycles)20000 cycles

Mechanical

A9F05440 — Mechanical
ParameterValue
Mounting supportDIN rail
Control typeToggle
Terminal connection typeDouble terminal (top or bottom) 1...35 mm² rigid Double terminal (top or bottom) 1...25 mm² flexible
Terminal tightening torque3.5 N.m top or bottom
Wire stripping length14 mm for top or bottom connection
Contact position indicatorYes
Local signalling/indicationTrip indicator
Width72 mm
Height91 mm
Depth78.5 mm
Number of 9 mm pitches8

Environmental

A9F05440 — Environmental
ParameterValue
Operating ambient temperature-35...70 °C
Storage ambient temperature-40...85 °C
IP degree of protectionIP20 conforming to IEC 60529
Pollution degree3 conforming to EN/IEC 60947-2
Relative humidity95 % at 55 °C
Tropicalisation class2 conforming to IEC 60068-1

Approvals

A9F05440 — Approvals
ParameterValue
StandardsEN/IEC 60947-2 EN/IEC 60898-1

Product details

The A9F05440 is a 40 A, 4-pole miniature circuit-breaker from the Acti9 iC60N family, with a D tripping curve. Dual-rated to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (domestic/similar), it carries a 10 kA Icn at 400 V AC under 60898-1 and a 36 kA Icu at 12–133 V AC under 60947-2. Overvoltage category IV means it's rated for the main incoming supply — not just downstream sub-circuits. Pollution degree 3 confirms it handles conductive dust and humidity typical of industrial enclosures.

Snaps onto a DIN rail (mounting support: DIN rail). The 4-pole width is 8 x 9 mm pitches = 72 mm, so it occupies four standard modular positions. The IP20 finger-safe front is standard for enclosed distribution boards; no washdown rating here.

Frequently asked questions

What is the breaking capacity of A9F05440 at 400 V?

Under EN/IEC 60898-1 it is rated 10 kA Icn at 400 V AC; under EN/IEC 60947-2 it is rated 10 kA Icu at 380–415 V AC and 6 kA Icu at 440 V AC.

What is the closest alternative to A9F05440 in the same family?

Within the Acti9 iC60N range, the closest sibling would be a different current rating or pole count — the D-curve, 4-pole, 40 A combination is specific. No direct pin-compatible substitute exists outside the Acti9 iC60N line.

Where can I buy A9F05440?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
A9F05440