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Schneider Electric A9N18426

Schneider A9N18426 Acti9 C120 MCB, 3-pole, 125 A, Curve B

MPNA9N18426
Active

Schneider A9N18426 Din Rail Mount Circuit Breakers.

$291.47 – $530.00Ref. price · indicative, final on quote
Schneider Electric A9N18426 datasheet (PDF)
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

A9N18426 key specifications
ParameterValue
Control typeToggle
Network typeAC
Product or component typeMiniature circuit-breaker
Voltage500 V AC 50/60 Hz conforming to EN/IEC 60947-2
[Ue] rated operational voltage380...415 V AC 50/60 Hz 220...240 V AC 50/60 Hz 440 V AC 50/60 Hz 230...400 V AC 50/60 Hz
[Uimp] rated impulse withstand voltage6 kV conforming to EN/IEC 60947-2
Breaking capacity15000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 10 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 30 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at <= 375 V DC conforming to EN/IEC 60947-2
Current125 A at 30 °C
[Ics] rated service breaking capacity7500 A 50 % conforming to EN/IEC 60898-1 - 400 V AC 50/60 Hz 5 kA 50 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 15 kA 50 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 7.5 kA 50 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 15 kA 100 % conforming to EN/IEC 60947-2 - <= 375 V DC
Network frequency50/60 Hz
Poles description3P
Number of protected poles3

All specifications

A9N18426 additional specifications
ParameterValue
IP degree of protectionIP20 conforming to IEC 60529
Mounting modeClip-on
Mounting support35 mm symmetrical DIN rail
Wire stripping length15 mm
Connections - terminalsTunnel type terminals1...50 mm² rigid Tunnel type terminals1.5...35 mm² flexible
Pollution degree3 conforming to IEC 60947-2
Relative humidity95 % at 55 °C
Operating altitude2000 m
Depth73 mm
Width81 mm
ColorWhite
Height81 mm
Product weight0.615 kg
Electrical durability5000 cycles conforming to IEC 60947-2
Mechanical durability20000 cycles
StandardsEN/IEC 60947-2 EN/IEC 60898-1
RangeActi9
Curve codeB
9 mm pitches9
Tropicalisation2 conforming to IEC 60068-1
Limitation class3 conforming to EN/IEC 60947-2
Local signallingON/OFF indication
Device short nameC120H
Tightening torque3.5 N.m
Device applicationDistribution
Overvoltage categoryIV
Trip unit technologyThermal-magnetic
Magnetic tripping limit3...5 x In
Earth-leakage protectionSeparate block
Suitability for isolationYes conforming to IEC 60947-2
Contact position indicatorYes
Locking options descriptionHandle sealable with cable diameter 0.7mm in OFF or ON position
Ambient air temperature for storage-40...70 °C
Ambient air temperature for operation-30...60 °C
Comb busbar and distribution block compatibilityNO

Product details

Overview

The A9N18426 is a 3-pole Acti9 C120 miniature circuit breaker rated for 125 A switching current with a Curve B trip characteristic, suited for distribution panels on 415 V AC networks.

At 125 A and 3 poles, the A9N18426 sits at the high-current end of the Acti9 C120 range. Compare with the A9N18447, which is a 2-pole variant: the A9N18426 carries 125 A per pole versus the A9N18447's 125 A per pole, but the pole count difference means the A9N18426 handles three-phase loads while the A9N18447 covers single-phase or two-pole applications.

MPN
A9N18426