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Schneider Electric EZ9F34420 — Circuit Breaker Accessories

Schneider Electric EZ9F34420 Easy9 MCB, 20 A, 4P, C-Curve, 4

MPNEZ9F34420
Obsolete

Schneider Electric Easy9 MCB, EZ9F34420, 20 A, 4P, C-curve, 4.5 kA breaking capacity at 400 V AC, DIN rail clip-on, grey (RAL 7035).

Schneider Electric EZ9F34420 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

EZ9F34420 — Identification
ParameterValue
Product / component typeMiniature circuit-breaker
Product rangeEasy9
Device applicationDistribution
EZ9F34420 — Electrical
ParameterValue
Network type (AC/DC)AC
Rated current [In]20 A
Rated operational voltage [Ue]400 V AC 50 Hz
Rated insulation voltage [Ui]500 V AC 50/60 Hz conforming to IEC 60898-1
Rated impulse withstand voltage [Uimp]4 kV conforming to IEC 60898-1
Network frequency50 Hz
Magnetic tripping limit5...10 x In
EZ9F34420 — Protection & Performance
ParameterValue
Breaking capacity4500 A Icn at 230 V AC 50/60 Hz conforming to IEC 60898-1 4500 A Icn at 400 V AC 50/60 Hz conforming to IEC 60898-1
Rated service breaking capacity [Ics]4.5 kA 100 % x Icn at 400 V AC 50/60 Hz conforming to IEC 60898-1
Trip unit technologyThermal-magnetic
Suitability for isolationYes conforming to IEC 60898-1
Mechanical durability10000 cycles
Electrical durability4000 cycles
Local signallingWithout
Contact position indicatorYes
EZ9F34420 — Mechanical
ParameterValue
Connections / terminalsTunnel type terminal (top or bottom) 1...25 mm² rigid Tunnel type terminal (top or bottom) 1...16 mm² flexible
Device short nameEasy9 MCB
Control typeToggle
Mounting modeClip-on
Mounting supportDIN rail
Usable 9 mm pitches8
Width72 mm
Height81 mm
Depth66.5 mm
ColourGrey (RAL 7035)
EZ9F34420 — Environmental
ParameterValue
IP degree of protectionIP20 conforming to IEC 60529
Pollution degree2
Operating ambient air temperature-25...60 °C
Storage ambient air temperature-40...85 °C
EZ9F34420 — Approvals
ParameterValue
StandardsIEC 60898-1
EZ9F34420 — Specifications
ParameterValue
Curve codeC
Number of protected poles4

Product details

Integrator note — EZ9F34420

The Schneider Electric EZ9F34420 is a 20 A, 4-pole miniature circuit breaker from the Easy9 range, built to IEC 60898-1. Rated breaking capacity is 4500 A Icn at 230 V AC and 400 V AC, with a service breaking capacity (Ics) of 4.5 kA at 400 V — meaning it can safely clear a fault and be reclosed without replacement after a downstream event at that level. The 4 kV impulse withstand voltage (Uimp) covers typical industrial transient exposure on a 400 V distribution panel.

Frequently asked questions

How do I get current pricing and availability for EZ9F34420?

Submit an RFQ through the storefront. The EZ9F34420 is sourced to order against a quote; availability and current pricing are confirmed at quote time.

What is the closest alternative to EZ9F34420 in the Easy9 family?

Within the Easy9 range, the closest peer is the same 4-pole C-curve MCB at a different amp rating — the 16 A variant (EZ9F34416) or the 25 A variant (EZ9F34425). The form factor, DIN footprint, and breaking capacity are identical; only the thermal trip threshold changes. Pin-for-pin, the terminal layout and mounting are the same — no wiring change needed if you swap within the same frame size.

What are the key ratings of EZ9F34420?

Rated current 20 A, 4 poles, C-curve (5–10 × In magnetic trip), breaking capacity 4500 A Icn at 230/400 V AC, service breaking capacity 4.5 kA Ics at 400 V, rated insulation voltage 500 V AC, rated operational voltage 400 V AC, impulse withstand 4 kV.

What compliance documentation does Schneider provide for EZ9F34420?

The EZ9F34420 is designed to IEC 60898-1. Schneider Electric typically provides CE declaration of conformity and RoHS/REACH compliance data on request through the product support portal.

MPN
EZ9F34420