Skip to main content
Log in
Schneider Electric A9F03720 — Miniature Circuit Breakers (MCB)

Schneider Electric A9F03720 Acti9 iC60N MCB, 20 A, 3P+N, B-C

MPNA9F03720
Active

Schneider Electric Acti9 iC60N, A9F03720, miniature circuit breaker, 20 A, 3P+N, B-curve, 36 kA Icu at 12-133 V AC, DIN rail mount.

Schneider Electric A9F03720 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

A9F03720 — Identification
ParameterValue
Product nameActi9 iC60
Product rangeActi9
Product/component typeMiniature circuit-breaker
Device applicationDistribution
A9F03720 — Ratings
ParameterValue
Rated current (In)20 A
Poles configuration3P + N
Number of protected poles3
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 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
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
A9F03720 — 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
A9F03720 — 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
A9F03720 — 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
A9F03720 — Approvals
ParameterValue
StandardsEN/IEC 60947-2 EN/IEC 60898-1

Product details

The Schneider Electric A9F03720 is an Acti9 iC60N miniature circuit breaker rated 20 A with a B-curve trip characteristic, 3P+N poles, and a 36 kA Icu breaking capacity at 12-133 V AC.

At 220-240 V AC it drops to 20 kA Icu, and at 380-415 V AC to 10 kA Icu. The IEC 60898-1 rating gives 6000 A Icn at 400 V AC — the standard for domestic final circuits. The B-curve magnetic trip fires at 4 x In (±20%), so it clears fast on short circuits but tolerates moderate inrush from resistive loads.

Double terminals top and bottom accept 1-25 mm² rigid or 1-16 mm² flexible. IP20 finger-safe protection suits enclosed panel mounting.

Frequently asked questions

Where can I buy A9F03720 and how do I get a price?

This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time.

What is A9F03720's breaking capacity at 400 V?

Under IEC 60898-1 it is rated 6000 A Icn at 400 V AC. Under IEC 60947-2 the Icu is 10 kA at 380-415 V AC and 6 kA at 440 V AC.

What standards does A9F03720 comply with?

It is certified to EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (residential), with pollution degree 3, overvoltage category IV, and suitability for isolation per both standards.

MPN
A9F03720