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Schneider Electric A9N19821 — 2-Pole MCB (DIN Rail)

Schneider Electric A9N19821 Acti9 C120H MCB, D Curve, 100 A,

MPNA9N19821
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Schneider Electric Acti9 C120H miniature circuit breaker, A9N19821, D curve, 100 A rated current, 2 poles, 10 kA breaking capacity at 400 V AC, clip-on DIN rail mount.

Schneider Electric A9N19821 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9N19821 — Identification
ParameterValue
Product nameC120
Product rangeActi9
Series / familyActi9
Device short nameC120H
Product / component typeMiniature circuit-breaker
Device applicationDistribution
A9N19821 — Electrical
ParameterValue
Rated current [In]100 A at 30 °C
Number of protected poles2
Pole configuration2P
Rated operational voltage [Ue]400 V AC 50/60 Hz
Network type (AC/DC)AC
Network frequency50/60 Hz
A9N19821 — Protection
ParameterValue
Tripping curve codeD
Magnetic tripping limit10...14 x In conforming to GB/T 10963.1 12 x In +/- 20 % conforming to GB/T 14048.2
Breaking capacity (Icu)10 kA Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 10 kA Icn at 400 V AC 50/60 Hz conforming to GB/T 10963.1 10 kA Icu at 400 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 400 V AC 50/60 Hz conforming to GB/T 14048.2
Energy limitation class3 conforming to IEC 60898-1
Suitable for isolationYes conforming to IEC 60947-2
Trip unit technologyThermal-magnetic
Earth-leakage protectionSeparate block
Operating / control typeToggle
Mechanical durability (cycles)20000 cycles
A9N19821 — Mechanical
ParameterValue
9 mm pitches6
Height86 mm
Depth73 mm
Mounting supportDIN rail
Mounting modeClip-on
Terminal connectionsTunnel type terminals top or bottom 1...50 mm² rigid without cable end Tunnel type terminals top or bottom 1.5...35 mm² flexible with or without cable end
Terminal tightening torquePower circuit: 3.5 N.m
Local signalling / indicationON/OFF indication
Contact position indicatorYes
A9N19821 — Environmental
ParameterValue
Operating temperature range-30...70 °C
Storage temperature range-40...80 °C
A9N19821 — Approvals
ParameterValue
Standards / complianceGB 10963.1 EN/IEC 60898-1 GB/T 14048.2 EN/IEC 60947-2

Product details

The Schneider Electric A9N19821 is an Acti9 C120H miniature circuit breaker rated 100 A at 30 °C, with a D tripping curve (magnetic trip between 10 and 14 times In). The 10 kA breaking capacity at 400 V AC (Icn per IEC 60898-1, Icu per IEC 60947-2) is enough for most distribution panels fed from a 400 V transformer; it safely interrupts a fault up to that level without welding contacts or cascading upstream. Two poles protected, clip-on DIN rail mount, IP20 finger-safe enclosure — standard panel integration.

Complies with GB 10963.1, EN/IEC 60898-1, GB/T 14048.2, and EN/IEC 60947-2. Pollution degree 3 per IEC 60947-2, limitation class 3 per IEC 60898-1. Impulse withstand voltage 6 kV.

Tunnel-type terminals accept 1 to 50 mm² rigid (no ferrule) or 1.5 to 35 mm² flexible with or without ferrule. Tightening torque: 3.5 N·m on the power circuit. Strip length: 14 mm. The 9 mm pitch across 6 modules means it occupies 54 mm of DIN rail width — plan your enclosure fill factor accordingly.

Frequently asked questions

Where can I buy A9N19821 and what is the lead time?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your quantity and delivery window.

What is the closest alternative to A9N19821 in the Acti9 family?

Within the Acti9 C120 range, the main variant difference is the tripping curve. The A9N19821 is a D-curve 100 A 2P. A C-curve version (A9N19820) would trip faster on inrush and is better for resistive or general-purpose loads, not motor circuits. No pin-compatible alternative exists outside the C120H series — the footprint, terminal layout, and DIN pitch are identical across the C120H range, so swapping curves is a straight mechanical replacement.

What compliance documentation does Schneider provide for A9N19821?

The breaker is certified to GB 10963.1, EN/IEC 60898-1, GB/T 14048.2, and EN/IEC 60947-2. It carries a suitability-for-isolation mark per IEC 60947-2. Standard Schneider documentation includes a declaration of conformity and test certificates for the listed standards; these are available on request with the RFQ.

MPN
A9N19821