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Schneider Electric C12B4TM160B — Miniature Circuit Breakers (MCB)

Schneider Electric C12B4TM160B ComPacT NSXm 160A 4P 25kA Cir

MPNC12B4TM160B
Active

Schneider Electric ComPacT NSXm, circuit breaker, 4P, 160 A at 40 °C, TM-D trip unit, 25 kA at 415 V AC, IP40, grey (RAL 7016).

$636.50Ref. price · indicative, final on quote
Schneider Electric C12B4TM160B datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C12B4TM160B — Identification
ParameterValue
Product nameComPacT NSXm
Product rangeComPacT
Product/component typeCircuit breaker
Device applicationDistribution
C12B4TM160B — Ratings
ParameterValue
Rated current (In)160 A at 40 °C
Poles configuration4P
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
C12B4TM160B — 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
C12B4TM160B — Mechanical
ParameterValue
Mounting supportBackplate
Control typeToggle
Local signalling/indicationFlag (green) for presence of auxiliary contacts
Number of 9 mm pitches12 module
C12B4TM160B — 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 %
C12B4TM160B — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C12B4TM160B — Electrical
ParameterValue
[Icu] rated ultimate short-circuit breaking capacity50 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 25 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 20 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
[Ics] rated service short-circuit breaking capacity50 kA at 220...240 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
C12B4TM160B — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

The Schneider Electric C12B4TM160B is a ComPacT NSXm 4-pole circuit breaker rated 160 A at 40 °C with a TM-D thermal-magnetic trip unit. Its 25 kA breaking capacity at 415 V AC (performance level B) means it safely clears faults up to that level on a 400 V distribution panel without cascading upstream — sized for main or heavy feeder protection in commercial and light industrial switchboards.

The 108 mm wide, 137 mm high, 80 mm deep footprint fits standard 12-module 9 mm pitch DIN cutouts. Connection is front-facing via compression lugs or busbars; neutral sits on the left. IP40 enclosure protection suits panel-mount indoor use — not washdown, but fine for a dry electrical room.

Listed as current-production (active lifecycle stage).

Certified to EN/IEC 60947-2 for circuit-breaker performance, suitability for isolation (yes), pollution degree 3 per IEC 60664-1, overvoltage category III, and IK07 impact resistance. Electrical durability: 20,000 cycles at 440 V at In/2; 10,000 cycles at 440 V at In. Mechanical durability: 20,000 cycles.

Frequently asked questions

What is the breaking capacity of C12B4TM160B?

Performance level B: 25 kA at 415 V AC. That is the maximum fault current it can safely interrupt at that voltage level.

What trip unit does this breaker use?

A TM-D thermal-magnetic trip unit rated 160 A at 40 °C. Thermal element handles overload; magnetic element handles short-circuit. No earth-leakage protection integrated.

MPN
C12B4TM160B