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Schneider Electric C164TM125C — Miniature Circuit Breakers (MCB)

C164TM125C ComPacT NSX TM-D Trip Unit, 125 A, 4P, EN/IEC 609

MPNC164TM125C
Active

Schneider Electric ComPacT NSX100…250, TM-D trip unit, thermal-magnetic, 125 A at 50 °C, 4 poles 4D, 690 V AC / 750 V DC, EN/IEC 60947-2.

Schneider Electric C164TM125C datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

C164TM125C — Identification
ParameterValue
Product rangeComPacT
Product range (series)ComPacT NSX100...250
Product/component typeTrip unit
Device applicationDistribution
C164TM125C — 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
C164TM125C — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
C164TM125C — 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
C164TM125C — Approvals
ParameterValue
StandardsEN/IEC 60947-2
C164TM125C — Specifications
ParameterValue
[Ir] long-time protection pick-up adjustment range0.7...1 x In
Trip unit protection functionsLI

Product details

Trip unit for ComPacT NSX100…250 — TM-D, 125 A, 4 poles

The C164TM125C is a thermal-magnetic trip unit from the Schneider Electric ComPacT NSX100…250 range, rated 125 A at 50 °C with 4 poles protected (4D). The unit carries a fixed instantaneous pick-up of 1250 A and adjustable long-time pick-up from 0.7 to 1 x In. Rated operational voltage is 690 V AC at 50/60 Hz and 750 V DC, with a pollution degree of 3 per IEC 60947-1. The unit is IP40 rated and mounts fixed in the breaker. Neutral protection is set at 1 x Ir (4D).

Electrical shock protection is Class II.

Frequently asked questions

What are the key specifications of C164TM125C?

The C164TM125C is a thermal-magnetic trip unit rated 125 A at 50 °C, 4 poles 4D, with LI protection (thermal overload and magnetic short-circuit). It operates at 690 V AC / 750 V DC and complies with EN/IEC 60947-2.

Where can I buy C164TM125C?

The C164TM125C is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing.

MPN
C164TM125C