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Schneider Electric A9N21372 — 1-Pole MCB (DIN Rail)

Schneider Electric A9N21372 DT40N MCB, 2 A, Curve D, 1P+N, P

MPNA9N21372
Obsolete

Schneider Electric Prodis DT40N MCB, A9N21372, 2 A rated current, curve D, 1P+N, 6 kA Icn / 10 kA Icu, clip-on DIN rail mount.

Schneider Electric A9N21372 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9N21372 — Identification
ParameterValue
Product nameDT40
Product / component typeMiniature circuit-breaker
Product rangeProdis
Device short nameDT40N
Poles description1P + N
Number of protected poles1
Device applicationDistribution
A9N21372 — Electrical & Protection
ParameterValue
Rated current (In)2 A
Rated operational voltage (Ue)230 V AC 50 Hz between phase and neutral
Tripping curve codeD
Magnetic tripping limit10...14 x In
Breaking capacity (Icu / AIR)6000 A Icn at 230 V AC 50 Hz conforming to EN/IEC 60898-1 10 kA Icu at 230...240 V AC 50 Hz conforming to IEC 60947-2
Network type (AC/DC)AC
Network frequency50 Hz
Overvoltage categoryIV
Trip unit technologyThermal-magnetic
Control / actuation typeToggle
Mechanical durability (cycles)20000 cycles
A9N21372 — Mounting & Connection
ParameterValue
Terminal connections / wire rangeTunnel 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
Mounting supportDIN rail
Mounting modeClip-on
Width18 mm
Height81 mm
Depth78 mm
Tightening torque (by circuit)2 N.m
A9N21372 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
A9N21372 — Approvals
ParameterValue
Conformity standardsEN/IEC 60898-1 EN/IEC 60947-2
A9N21372 — Electrical
ParameterValue
[Ui] rated insulation voltage400 V AC 50 Hz
[Uimp] rated impulse withstand voltage4 kV conforming to IEC 60947-2

Product details

The 6 kA Icn at 230 V AC (EN/IEC 60898-1) and 10 kA Icu at 230–240 V AC (IEC 60947-2) give it dual-standard coverage: the lower figure governs residential/similar installations, the higher figure covers industrial panel coordination. Both standards are listed on the nameplate, so the breaker qualifies for distribution boards and control panels alike.

Clip-on mounting to a DIN rail (35 mm symmetrical rail per EN 60715) and 18 mm width per pole — two 9 mm pitches — so this 1P+N unit occupies 18 mm of rail space. IP20 finger-safe protection is standard for enclosed distribution boards. The toggle provides local ON/OFF indication. Tropicalisation class 2 (IEC 60068-1) and pollution degree 3 (IEC 60947-2) mean it handles humid, dusty environments without derating — a common requirement for food-and-bev or HVAC plant rooms.

Frequently asked questions

How do I get current pricing and availability for A9N21372?

Submit an RFQ through this listing; availability and current pricing are confirmed at quote time through independent distribution.

What is A9N21372's listed depth?

The A9N21372 has a depth of 78 mm.

What is A9N21372's listed range?

It belongs to the Schneider Prodis range (also written ProDis).

What compliance documentation does this brand provide for A9N21372?

The breaker is certified to EN/IEC 60898-1 and EN/IEC 60947-2, carries NF quality label, and conforms to IEC 60068-1 for tropicalisation. Documentation (declaration of conformity, datasheet) is available on request.

MPN
A9N21372