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Schneider Electric C12N3TM160B — Miniature Circuit Breakers (MCB)

Schneider Electric C12N3TM160B ComPacT NSXm, 160 A, 50 kA

MPNC12N3TM160B
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Schneider Electric ComPacT NSXm, C12N3TM160B, 3P 160 A thermal-magnetic circuit breaker, 50 kA at 415 V AC, IP40.

Schneider Electric C12N3TM160B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C12N3TM160B — Identification
ParameterValue
Product nameComPacT NSXm
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C12N3TM160B — Ratings
ParameterValue
Rated current (In)160 A at 40 °C
Poles configuration3P
Rated operational voltage (Ue)440 V AC 50/60 Hz
Rated insulation voltage (Ui)800 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)8 kV
Network type (AC/DC)AC
Network frequency50/60 Hz
Utilisation categoryCategory A
Overvoltage categoryIII
C12N3TM160B — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to IEC 60947-2
Electrical durability (cycles)20000 cycles at 440 V In/2 10000 cycles at 440 V In
Mechanical durability (cycles)20000 cycles
C12N3TM160B — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlag (green) for presence of auxiliary contacts
Number of 9 mm pitches9 module
C12N3TM160B — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-50...85 °C
IP degree of protectionIP40 conforming to IEC 60529
Pollution degree3 conforming to IEC 60664-1
Relative humidity0...95 %
C12N3TM160B — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C12N3TM160B — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity90 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
[Ics] rated service short-circuit breaking capacity90 kA at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
C12N3TM160B — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

The 3-pole (3P) configuration covers three-phase distribution or motor feeder circuits. Category A utilization means it is not intended for frequent switching of motor loads under normal conditions — it's a distribution breaker, not a motor starter. No earth-leakage protection built in — if you need that, you add a separate Vigi module or external RCD.

Mounts on a backplate (not DIN rail — this is a bolted MCCB). Connection is front-front: both line and load terminals are accessible from the front, which simplifies busbar routing and panel wiring. Accepts compression lugs or busbars. The 9-module pitch (9 x 9 mm = 81 mm wide) matches standard modular panel cutouts. IP40 enclosure protection means it's suitable for indoor panels where no water spray is present. The grey (RAL 7016) finish is standard for the ComPacT NSXm line.

Frequently asked questions

What is the breaking capacity of the C12N3TM160B?

50 kA at 415 V AC (performance level N). This is the maximum short-circuit current the breaker can safely interrupt at that voltage.

Where can I buy the C12N3TM160B?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an inquiry for a firm quote.

What is the closest alternative to the C12N3TM160B?

Within the ComPacT NSXm family, the closest peer is the 3P 160 A breaker with a different breaking capacity or trip unit variant (e.g., Micrologic electronic trip). The TM-D thermal-magnetic version is the standard choice for distribution applications where adjustable electronic trip curves are not required.

MPN
C12N3TM160B