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Schneider Electric A9Z12440 — Residual Current Breakers (RCCB/RCBO)

A9Z12440 Acti9 iID RCCB, 4P, 40 A, 100 mA, Type AC

MPNA9Z12440
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Schneider Electric Acti9 iID A9Z12440, 4-pole residual current circuit breaker (RCCB), 40 A rated current, 100 mA earth-leakage sensitivity, Type AC, 10 kA conditional short-circuit current, DIN rail clip-on.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9Z12440 — Residual Current Protection
ParameterValue
Earth-leakage sensitivity (IΔn)100 mA
Earth-leakage protection class / typeType AC
Earth-leakage trip time delayInstantaneous
Residual-current tripping technologyVoltage independent
A9Z12440 — Electrical Ratings
ParameterValue
Rated current (In)40 A
Rated operational voltage (Ue)380...415 V AC 50/60 Hz
Poles description4P
Neutral pole positionLeft
Network typeAC
Network frequency50/60 Hz
Rated insulation voltage (Ui)500 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Electrical durabilityAC-1: 15000 cycles
Mechanical durability (operating cycles)20000 cycles
A9Z12440 — Identification
ParameterValue
Product nameActi9 iID
Product / component typeResidual current circuit breaker (RCCB)
Product range / familyActi9
Device short nameiID
A9Z12440 — Mechanical
ParameterValue
Mounting supportDIN rail
Mounting modeClip-on
Control typeToggle
Width in 9 mm modules8
Terminal connectionsDouble terminal front 1...35 mm² rigid Double terminal front 1...25 mm² flexible Double terminal front 1...25 mm² flexible with ferrule Double terminal back 1...25 mm² rigid Double terminal back 1...16 mm² flexible Double terminal back 1...16 mm² flexible with ferrule
Wire stripping length14 mm for top or bottom connection
Terminal tightening torque3.5 N.m top or bottom
Width72 mm
Height91 mm
Depth73 mm
A9Z12440 — Environmental
ParameterValue
Operating ambient temperature-5...60 °C
Storage ambient temperature-40...85 °C
IP degree of protectionIP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529
Pollution degree3
A9Z12440 — Approvals
ParameterValue
StandardsEN/IEC 61008-1 EN/IEC 61008-2-1

Product details

The A9Z12440 is a 4-pole (4P) residual current circuit breaker (RCCB) from the Acti9 iID family, rated 40 A continuous and 100 mA earth-leakage sensitivity. The 100 mA threshold means it protects against fault currents that could cause fire in cable runs or equipment — it is not a personnel-protection device (those are 30 mA or lower). Mechanical durability is rated at 20,000 cycles, electrical durability at 15,000 cycles under AC-1 resistive load. That is a solid service life for a panel RCCB — not a daily-switched device, but fine for its role as a protective element that sees occasional manual test and infrequent fault trips.

Neutral is on the left. The double-terminal design (front and back) allows daisy-chaining or looping without additional junction blocks. IP20 on the body (finger-safe), IP40 within a modular enclosure. Storage temperature range -40 to 85 °C; operating range -5 to 60 °C.

Frequently asked questions

How do I get current pricing and availability for A9Z12440?

Submit an RFQ for the A9Z12440; pricing and stock are confirmed at quote time through independent distribution channels.

What is the closest alternative to A9Z12440 in the Acti9 family?

Within the Acti9 iID range, the closest sibling is a variant with a different sensitivity or pole count — for example, a 2-pole 30 mA Type A RCCB serves personnel protection, while the 4-pole 100 mA Type AC A9Z12440 is for equipment/fire protection on three-phase circuits. The mechanical footprint and DIN-rail mounting are shared across the iID family.

What compliance documentation does A9Z12440 carry?

The A9Z12440 is certified to EN/IEC 61008-1 and EN/IEC 61008-2-1 (RCCB standards). It carries IP20/IP40 ingress protection per IEC 60529 and is rated for pollution degree 3. No RoHS/REACH/UL statements are in the provided record, but the EN/IEC standards cover European compliance.

MPN
A9Z12440