Skip to main content
Log in
Schneider Electric A9N21409 — Miniature Circuit Breakers (MCB)

Schneider Electric A9N21409 DT40N MCB, 32 A, 3P+N, Curve C

MPNA9N21409
Obsolete

Schneider Electric Prodis DT40N miniature circuit breaker, A9N21409, 32 A, 3P+N, curve C, 6 kA Icn / 10 kA Icu, DIN rail clip-on.

Schneider Electric A9N21409 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

A9N21409 — Identification
ParameterValue
Product nameDT40
Product rangeProdis
Product range (series)ProDis
Product/component typeMiniature circuit-breaker
Device applicationDistribution
A9N21409 — Ratings
ParameterValue
Rated current (In)32 A
Poles configuration3P + N
Number of protected poles3
Breaking capacity6000 A Icn at 400 V AC 50 Hz conforming to EN/IEC 60898-1 10 kA Icu at 400...415 V AC 50 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)6000 A 100 % x Icn at 400 V AC 50 Hz conforming to EN/IEC 60898-1 7.5 kA 75 % x Icu at 400 V AC 50 Hz conforming to IEC 60947-2
Rated operational voltage (Ue)230 V AC 50 Hz between phase and neutral 400 V AC 50 Hz between phases
Rated insulation voltage (Ui)400 V AC 50 Hz
Rated impulse withstand voltage (Uimp)4 kV conforming to IEC 60947-2
Network type (AC/DC)AC
Network frequency50 Hz
A9N21409 — Protection
ParameterValue
Curve codeC
Trip unit technologyThermal-magnetic
Magnetic tripping limit5...10 x In
Earth-leakage protectionSeparate block
Suitability for isolationYes
Limitation class3 conforming to EN/IEC 60898-1
Electrical durability (cycles)10000 cycles
Mechanical durability (cycles)20000 cycles
A9N21409 — Mechanical
ParameterValue
Mounting supportDIN rail
Mounting modeClip-on
Control typeToggle
Terminal connection typeTunnel type terminals downstream 0.33...10 mm² flexible Tunnel type terminals downstream 0.75...16 mm² rigid Tunnel type terminals upstream 0.33...10 mm² flexible Tunnel type terminals upstream 0.75...16 mm² rigid
Terminal tightening torque2 N.m
Wire stripping length13 mm
Contact position indicatorYes
Local signalling/indicationON/OFF indication
Width54 mm
Height81 mm
Depth78 mm
Number of 9 mm pitches6
A9N21409 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
Pollution degree3 conforming to IEC 60947-2
Relative humidity95 % at 55 °C
Tropicalisation class2 conforming to IEC 60068-1
A9N21409 — Approvals
ParameterValue
StandardsEN/IEC 60898-1 EN/IEC 60947-2

Product details

Breaking capacity is 6 kA Icn at 400 V AC per EN/IEC 60898-1, and 10 kA Icu at 400–415 V AC per IEC 60947-2 — the dual standard means it qualifies for both residential and industrial coordination studies.

Curve C (magnetic tripping limit 5–10 × In) means the breaker tolerates moderate inrush currents — suitable for general-purpose distribution feeding lighting banks, small motor starters, and control transformers where the startup surge stays under 320 A peak. The neutral position is left, matching the typical busbar layout in Schneider distribution boards.

Frequently asked questions

Where can I buy A9N21409 and how do I get a price?

The A9N21409 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is A9N21409's breaking capacity at 400 V?

The A9N21409 has a breaking capacity of 6 kA Icn at 400 V AC per EN/IEC 60898-1 and 10 kA Icu at 400–415 V AC per IEC 60947-2.

What compliance standards does A9N21409 meet?

The A9N21409 is certified to EN/IEC 60898-1 and EN/IEC 60947-2, carries NF quality label, and is tropicalised per IEC 60068-1 (class 2).

MPN
A9N21409