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Schneider Electric EZC400N3300 — Miniature Circuit Breakers (MCB)

Schneider Electric EZC400N3300 EasyPact EZC400N, 400 A, 3P,

MPNEZC400N3300
Obsolete

Schneider Electric EasyPact EZC400N, EZC400N3300, 3-pole molded case circuit breaker, 400 A rated at 40 °C, 36 kA Icu at 440 V AC, TM-D thermal-magnetic trip unit, fixed mount.

Schneider Electric EZC400N3300 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

EZC400N3300 — Identification
ParameterValue
Product range (series)EasyPact
Product/component typeCircuit breaker
Device applicationDistribution
EZC400N3300 — Ratings
ParameterValue
Rated current (In)400 A at 40 °C
Poles configuration3P
Breaking capacity36 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 40 kA Icu at 220/230 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 380 V AC 50/60 Hz conforming to IEC 60947-2 36 kA Icu at 400/415 V AC 50/60 Hz conforming to IEC 60947-2
Rated service breaking capacity (Ics)18 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 220/230 V AC 50/60 Hz conforming to IEC 60947-2 18 kA at 380 V AC 50/60 Hz conforming to IEC 60947-2 18 kA at 400/415 V AC 50/60 Hz conforming to IEC 60947-2
Rated operational voltage (Ue)440 V AC 50/60 Hz conforming to IEC 60947-2
Rated insulation voltage (Ui)690 V AC 50/60 Hz conforming to IEC 60947-2
Rated impulse withstand voltage (Uimp)6 kV conforming to IEC 60947-2
Network type (AC/DC)AC
Network frequency50/60 Hz
Utilisation categoryCategory A
EZC400N3300 — Protection
ParameterValue
Trip unit technologyThermal-magnetic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to IEC 60947-2
Electrical durability (cycles)Category A: 4000 cycles 415 V AC 50/60 Hz conforming to IEC 60947-2
Mechanical durability (cycles)10000 cycles
EZC400N3300 — Mechanical
ParameterValue
Mounting supportBackplate
Mounting modeFixed
Control typeToggle
Contact position indicatorYes
Local signalling/indicationPositive contact indication
Width185 mm
Height255 mm
Depth140 mm
EZC400N3300 — Environmental
ParameterValue
Operating ambient temperature-25...70 °C
Storage ambient temperature-35...85 °C
IP degree of protectionIP20 conforming to IEC 60529
Pollution degree3 conforming to IEC 60947
EZC400N3300 — Approvals
ParameterValue
StandardsEN/IEC 60947-2 EN/IEC 60947-1 GB/T 14048.2 JIS C8201-2-2

Product details

If your enclosure runs hotter, the TM-D thermal-magnetic trip unit will derate; the trip unit itself is rated 300 A at 50 °C, so that's your ceiling in a warm cabinet. For a 400 A distribution breaker feeding a downstream panel, that 36 kA gives you solid selectivity headroom against most transformer secondary faults. The Utilisation category is A, meaning it's not intended for frequent switching of motor loads — this is a distribution breaker, not a motor circuit protector.

Fixed mount on a backplate, front connection both top and bottom. IP20 finger-safe protection means it's suitable for enclosed distribution boards — no shock hazard during maintenance with the door open. IK07 impact resistance handles accidental tool drops during commissioning. Complies with EN/IEC 60947-2 and 60947-1, plus GB/T 14048.2 and JIS C8201-2-2 for Chinese and Japanese markets.

Frequently asked questions

What is the breaking capacity of the EZC400N3300?

The EZC400N3300 has a breaking capacity of 36 kA Icu at 440 V AC, 40 kA Icu at 220/230 V AC, and 36 kA Icu at 380 V and 400/415 V AC, all conforming to IEC 60947-2. That 36 kA at 440 V is the figure to use for most industrial distribution panels.

What does the TM-D trip unit mean?

TM-D stands for thermal-magnetic trip with fixed settings. The thermal element provides overload protection (inverse time curve), and the magnetic element provides short-circuit protection with a fixed magnetic tripping current of 3200 A. No adjustment dials — what you see is what you get, which simplifies ordering but means you need to pick the right frame size upfront.

Where can I buy the EZC400N3300?

The EZC400N3300 is available to order through independent distribution. Submit an RFQ for current pricing and availability — lead time and stock position are confirmed at quote time. No minimum order quantity restrictions beyond standard distributor terms.

MPN
EZC400N3300