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Schneider Electric A9N21366 — 1-Pole MCB (DIN Rail)

Schneider Electric A9N21366 DT40N MCB, 16 A, 1P+N, C Curve,

MPNA9N21366
Obsolete

Schneider Electric ProDis DT40N MCB, A9N21366, 1P+N, 16 A, C curve, 6 kA Icn / 10 kA Icu, thermal-magnetic, DIN-rail clip-on, white.

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

A9N21366 — Identification
ParameterValue
Product nameDT40
Product / component typeMiniature circuit-breaker
Product rangeProdis
Device short nameDT40N
Poles description1P + N
Number of protected poles1
Device applicationDistribution
A9N21366 — Electrical & Protection
ParameterValue
Rated current (In)16 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
A9N21366 — 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
A9N21366 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-40...70 °C
IP degree of protectionIP20 conforming to IEC 60529
A9N21366 — Approvals
ParameterValue
Conformity standardsEN/IEC 60898-1 EN/IEC 60947-2
A9N21366 — Electrical
ParameterValue
[Ui] rated insulation voltage400 V AC 50 Hz
[Uimp] rated impulse withstand voltage4 kV conforming to IEC 60947-2

Product details

It clips onto DIN rail and is built for distribution panels — the thermal-magnetic trip unit handles overloads and short-circuits in a single module width (18 mm). Breaking capacity is 6 kA Icn at 230 V AC per EN/IEC 60898-1, and 10 kA Icu at 230–240 V AC per IEC 60947-2. That dual rating means it qualifies for both residential (60898-1) and industrial (60947-2) applications — useful when a panel must meet both standards without swapping breakers.

At 16 A, this breaker suits branch circuits feeding a mix of resistive and light inductive loads up to roughly 3.5 kW on a 230 V line. Overvoltage category IV qualifies it for the service entrance or main distribution board, not just sub-panels. Tropicalisation level 2 per IEC 60068-1 means the breaker is treated against humidity and fungal growth — relevant for installations in coastal or high-humidity zones where standard breakers may corrode internally.

For volume purchases or BOM freeze, the part is specified into the panel design with full traceability to the Schneider ProDis family. The dual-standard certification (EN/IEC 60898-1 and 60947-2) simplifies compliance documentation across projects.

Neutral is on the left (fixed position). IP20 finger-safe protection (IEC 60529) is standard for enclosed panels. The toggle control gives clear ON/OFF indication. Earth-leakage protection requires a separate block — not built in.

Frequently asked questions

What are the key ratings of A9N21366?

16 A rated current, C curve, 1P+N poles, breaking capacity 6 kA Icn (EN/IEC 60898-1) and 10 kA Icu (IEC 60947-2), thermal-magnetic trip, DIN-rail clip-on, width 18 mm.

Where can I buy A9N21366?

It is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What compliance documentation does Schneider provide for A9N21366?

The breaker carries dual certification to EN/IEC 60898-1 and IEC 60947-2, pollution degree 3, overvoltage category IV, tropicalisation level 2, and IP20 protection. Quality label NF is listed. RoHS/REACH/UL documentation should be requested at quote time.

MPN
A9N21366