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Schneider Electric C104MG025 — Miniature Circuit Breakers (MCB)

Schneider C104MG025 TM25G trip unit, 4-pole, 25 A, discontinued

MPNC104MG025
Obsolete

Schneider ComPacT NSX TM25G trip unit, order code C104MG025, 4 poles, 25 A, thermal-magnetic, LI protection, generator application, fixed mount, Class II, EN/IEC 60947-2, discontinued.

$48.66Ref. price · indicative, final on quote
Schneider Electric C104MG025 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C104MG025 — Identification
ParameterValue
Product rangeComPacT
Product range (series)ComPacT NSX100...250 ComPacT NSX100...250 DC
Product/component typeTrip unit
Device applicationGenerator
C104MG025 — Ratings
ParameterValue
Poles configuration4P
Rated operational voltage (Ue)690 V AC 50/60 Hz 750 V DC
Network type (AC/DC)AC DC
Network frequency50/60 Hz
C104MG025 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
C104MG025 — 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 60947-1
C104MG025 — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C104MG025 — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

Overview

The C104MG025 is a Schneider ComPacT NSX TM25G trip unit rated 25 A at 40 °C with 4 poles and a 4D neutral configuration (fully protected). It provides thermal-magnetic LI protection — L for overload, I for short-circuit — and is designed for generator applications. The unit is fixed-mount, Class II insulated, and conforms to EN/IEC 60947-2. Schneider discontinued this part as of December 2024.

Alternatives & selection

Compared to the C10F3TM025, the C104MG025 carries 4 poles versus 3, making it the correct choice when the BOM specifies a fully protected neutral (4D). The C10F3TM025 is rated 85 kA ICu and 800 V AC insulation, while the C104MG025 does not list those ratings — it is a generator-application trip unit, not a distribution breaker. Pick the C104MG025 when the design requires 4-pole neutral protection and generator-specific thermal-magnetic curves; pick the C10F3TM025 for a 3-pole distribution circuit with higher interrupting capacity.

MPN
C104MG025