Skip to main content
Log in
Schneider Electric A9F03420 — Miniature Circuit Breakers (MCB)

Schneider Electric A9F03420 Acti9 iC60N MCB, 20 A, 4P, Curve

MPNA9F03420
Active

Schneider Electric Acti9 iC60N series, A9F03420, miniature circuit breaker, 4P, 20 A, curve B, 36 kA breaking capacity at 12-133 VAC, DIN rail mount.

Schneider Electric A9F03420 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

A9F03420 — Identification
ParameterValue
Product nameActi9 iC60
Product rangeActi9
Product/component typeMiniature circuit-breaker
Device applicationDistribution
A9F03420 — Ratings
ParameterValue
Rated current (In)20 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
A9F03420 — Protection
ParameterValue
Curve codeB
Trip unit technologyThermal-magnetic
Magnetic tripping limit4 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
A9F03420 — Mechanical
ParameterValue
Mounting supportDIN rail
Control typeToggle
Terminal connection typeDouble terminal (top or bottom) 1...25 mm² rigid Double terminal (top or bottom) 1...16 mm² flexible
Terminal tightening torque2 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
A9F03420 — 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
A9F03420 — Approvals
ParameterValue
StandardsEN/IEC 60947-2 EN/IEC 60898-1

Product details

The Schneider Electric A9F03420 is a 4-pole Acti9 iC60N miniature circuit breaker rated at 20 A with a B-curve trip characteristic.

Breaking capacity varies with voltage and the governing standard. Under EN/IEC 60947-2 the A9F03420 delivers 36 kA Icu at 12–133 V AC, 20 kA at 220–240 V, 10 kA at 380–415 V, and 6 kA at 440 V. Under EN/IEC 60898-1 it is rated 10 kA Icn at 400 V. The 36 kA rating on the low-voltage side is useful where a transformer secondary feeds a high-fault panel, but the 415 V rating is the practical ceiling for a 400 V three-phase supply.

Terminals accept 1–25 mm² rigid or 1–16 mm² flexible conductors; tightening torque is 2 N·m.

Frequently asked questions

What is the breaking capacity of the A9F03420 at 400 V?

Under EN/IEC 60898-1 the A9F03420 is rated 10 kA Icn at 400 V AC. Under EN/IEC 60947-2 it delivers 10 kA Icu at 380–415 V AC and 6 kA Icu at 440 V AC.

What is the A9F03420 used for?

The A9F03420 is a 4-pole miniature circuit breaker rated 20 A, curve B, used for overcurrent and short-circuit protection in distribution boards. Its B-curve (4 x In magnetic trip) suits resistive and lightly inductive loads such as lighting, heaters, and control transformers.

Where can I buy the A9F03420?

The A9F03420 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What compliance documentation does Schneider provide for the A9F03420?

The A9F03420 carries dual certification to EN/IEC 60947-2 and EN/IEC 60898-1, and is tropicalised to IEC 60068-1 (class 2). It is suitable for isolation per both standards. Specific RoHS/REACH declarations are available from Schneider Electric on request.

MPN
A9F03420