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Schneider Electric A9N21367 — 1-Pole MCB (DIN Rail)

Schneider Electric A9N21367 DT40N MCB, 20 A, 1P+N, Curve C,

MPNA9N21367
Obsolete

Schneider Electric Prodis DT40N, A9N21367, miniature circuit breaker (MCB), 1P+N, 20 A rated, Curve C, 6 kA Icn / 10 kA Icu, clip-on DIN rail mount, IP20.

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

A9N21367 — Identification
ParameterValue
Product nameDT40
Product / component typeMiniature circuit-breaker
Product rangeProdis
Device short nameDT40N
Poles description1P + N
Number of protected poles1
Device applicationDistribution
A9N21367 — Electrical & Protection
ParameterValue
Rated current (In)20 A
Rated operational voltage (Ue)230 V AC 50 Hz between phase and neutral
Tripping curve codeC
Magnetic tripping limit5...10 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
A9N21367 — 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
A9N21367 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
A9N21367 — Approvals
ParameterValue
Conformity standardsEN/IEC 60898-1 EN/IEC 60947-2
A9N21367 — Electrical
ParameterValue
[Ui] rated insulation voltage400 V AC 50 Hz
[Uimp] rated impulse withstand voltage4 kV conforming to IEC 60947-2

Product details

Breaking capacity is rated 6000 A Icn at 230 V AC per EN/IEC 60898-1 (the standard for household MCBs) and 10 kA Icu at 230…240 V AC per IEC 60947-2 (the industrial standard for circuit-breakers). The 20 A rating, combined with the 6 kA Icn, fits typical 2.5 mm² copper final subcircuits on a 50 Hz network. Clip-on mounting to a DIN rail (35 mm symmetrical rail per EN 60715) and a width of 18 mm (2 x 9 mm pitches) means it occupies a single module slot in a distribution board.

Sourcing and lifecycle — active line, no obsolescence concern

Compliance documentation is straightforward: the breaker is certified to EN/IEC 60898-1 and EN/IEC 60947-2, carries NF quality label, and is tropicalised per IEC 60068-1 (2 levels). The dual-standard certification covers both residential and light industrial approvals in one part number.

Integration — what fits where

Terminals accept tunnel-type connections: upstream and downstream both take 0.75…16 mm² rigid or 0.33…10 mm² flexible copper. The neutral position is left, and the toggle control gives clear ON/OFF local indication. Earth-leakage protection requires a separate block — this MCB does not include integral RCD. Mechanical and electrical durability are both rated at 20,000 cycles — typical for a panelboard MCB, not a frequent-switching contactor. Operating altitude is 2000 m; relative humidity up to 95% at 55 °C. Overvoltage category IV means it is suitable for the origin of the installation, not just downstream sub-distribution.

Frequently asked questions

How do I get pricing and availability for A9N21367?

The A9N21367 is sourced and quoted to order against an RFQ through independent distribution channels. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm price and lead-time commitment.

What is the breaking capacity of A9N21367?

The A9N21367 is rated 6000 A Icn at 230 V AC per EN/IEC 60898-1 and 10 kA Icu at 230…240 V AC per IEC 60947-2, giving dual residential and light industrial certification.

What is the closest alternative to A9N21367 in the Prodis family?

Within the same Prodis DT40N series, the closest sibling is a different current rating (e.g., 16 A or 25 A) or a different curve (B or D). The A9N21367 is the 20 A, Curve C, 1P+N variant — the pole count and curve are the deciding factors for fit, not the current rating.

What compliance documentation does Schneider provide for A9N21367?

The A9N21367 is certified to EN/IEC 60898-1 and EN/IEC 60947-2, carries the NF quality label, and is tropicalised per IEC 60068-1 (2 levels). Pollution degree 3 per IEC 60947-2 is also declared.

MPN
A9N21367