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Schneider Electric A9N21394 — Miniature Circuit Breakers (MCB)

Schneider Electric A9N21394 DT40N MCB, D Curve 6 A 3P, 6/10

MPNA9N21394
Obsolete

Schneider Electric ProDis DT40N miniature circuit breaker, A9N21394, D curve, 6 A rated, 3 poles, 6 kA Icn / 10 kA Icu, clip-on DIN rail mount.

Schneider Electric A9N21394 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

A9N21394 — Identification
ParameterValue
Product nameDT40
Product rangeProdis
Product range (series)ProDis
Product/component typeMiniature circuit-breaker
Device applicationDistribution
A9N21394 — Ratings
ParameterValue
Rated current (In)6 A
Poles configuration3P
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)400 V AC 50 Hz between phases
Rated insulation voltage (Ui)440 V AC 50 Hz
Rated impulse withstand voltage (Uimp)4 kV conforming to IEC 60947-2
Network type (AC/DC)AC
Network frequency50 Hz
A9N21394 — Protection
ParameterValue
Curve codeD
Trip unit technologyThermal-magnetic
Magnetic tripping limit10...14 x In
Earth-leakage protectionSeparate block
Suitability for isolationYes
Limitation class3 conforming to EN/IEC 60898-1
Electrical durability (cycles)20000 cycles
Mechanical durability (cycles)20000 cycles
A9N21394 — 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
A9N21394 — 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
A9N21394 — Approvals
ParameterValue
StandardsEN/IEC 60898-1 EN/IEC 60947-2

Product details

What the D curve and 6 A rating mean for your panel

The A9N21394 is a Schneider Electric ProDis DT40N miniature circuit breaker with a D tripping curve, rated 6 A, 3 poles, and 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. The D curve magnetic trip fires at 10 to 14 x In.

The 3-pole body takes 6 modules of 9 mm pitch (54 mm wide). Tunnel-type terminals accept 0.33 to 10 mm² flexible or 0.75 to 16 mm² rigid upstream and downstream; strip length is 13 mm, tighten to 2 N.m. IP20 finger-safe front. The toggle gives local ON/OFF indication. If you need earth-leakage protection, a separate RCCB or RCBO block is required — this breaker is thermal-magnetic only.

NF quality label and dual EN/IEC standards cover most European and many international installations.

MPN
A9N21394