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Schneider Electric C254TM250D — Miniature Circuit Breakers (MCB)

Schneider Electric C254TM250D ComPacT NSX DC Trip Unit, 250

MPNC254TM250D
Active

Schneider Electric ComPacT NSX DC series, thermal-magnetic trip unit, 250 A rating, 4P 4d, 750 V DC, EN/IEC 60947-2.

$159.74 – $316.44Ref. price · indicative, final on quote
Schneider Electric C254TM250D datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

C254TM250D — Identification
ParameterValue
Product rangeComPacT
Product range (series)ComPacT NSX100...250 DC
Product/component typeTrip unit
Device applicationDistribution
C254TM250D — Ratings
ParameterValue
Poles configuration4P
Rated operational voltage (Ue)750 V DC
Network type (AC/DC)DC
C254TM250D — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
C254TM250D — 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
C254TM250D — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C254TM250D — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

DC-rated trip unit for ComPacT NSX 250 DC

The C254TM250D is a thermal-magnetic trip unit from the Schneider Electric ComPacT NSX 250 DC range, designed for DC distribution networks. It carries a 250 A rating at 40 °C and a rated operational voltage of 750 V DC, with 4 protected poles (4D configuration). This is the trip unit only — it mounts into a ComPacT NSX 250 DC fixed circuit breaker frame. The long-time pickup (Ir) adjusts from 0.7 to 1 x In, and the instantaneous pickup (Ii) adjusts from 5 to 10 x In. This gives the specifying engineer flexibility to coordinate with downstream loads without swapping the trip unit.

Standards and approvals for DC duty

The IP40 enclosure protection (IEC 60529) keeps tools and wires out but is not rated for washdown — install inside a panel.

The Class II electrical shock protection means no protective earth connection is required for the trip unit itself.

Frequently asked questions

What is the C254TM250D used for?

It is a thermal-magnetic trip unit for the ComPacT NSX 250 DC circuit breaker, providing overload and short-circuit protection on 750 V DC distribution networks.

What standards does the C254TM250D comply with?

It is certified to EN/IEC 60947-2 for low-voltage switchgear and carries a pollution degree 3 rating per IEC 60947-1.

Where can I buy the C254TM250D and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
C254TM250D