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Schneider Electric A9Z31240 — Residual Current Breakers (RCCB/RCBO)

A9Z31240 Acti9 iID RCCB, 40 A, 30 mA, Type A-SI, 2P

MPNA9Z31240
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Schneider Electric Acti9 iID, residual current circuit breaker (RCCB), 2P, 40 A, 30 mA, Type A-SI, 220-240 V AC, DIN rail clip-on, white.

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

Specifications

A9Z31240 — Residual Current Protection
ParameterValue
Earth-leakage sensitivity (IΔn)30 mA
Earth-leakage protection class / typeType A-SI (Super Immunised)
Earth-leakage trip time delayInstantaneous
Residual-current tripping technologyVoltage independent
A9Z31240 — Electrical Ratings
ParameterValue
Rated current (In)40 A
Rated operational voltage (Ue)220...240 V AC 50/60 Hz
Poles description2P
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
A9Z31240 — Identification
ParameterValue
Product nameActi9 iID
Product / component typeResidual current circuit breaker (RCCB)
Product range / familyActi9
Device short nameiID
A9Z31240 — Mechanical
ParameterValue
Mounting supportDIN rail
Mounting modeClip-on
Control typeToggle
Width in 9 mm modules4
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
Width36 mm
Height91 mm
Depth73 mm
A9Z31240 — Environmental
ParameterValue
Operating ambient temperature-25...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
A9Z31240 — Approvals
ParameterValue
StandardsEN/IEC 61008-1 EN/IEC 61008-2-1

Product details

40 A RCCB with Type A-SI earth-leakage protection

The Schneider Electric A9Z31240 is a 2-pole residual current circuit breaker (RCCB) from the Acti9 iID family, rated at 40 A with 30 mA earth-leakage sensitivity. It is a Type A-SI (Super Immunised) device, meaning it handles pulsed DC fault currents and is immune to nuisance tripping from high-frequency harmonics or surge currents — a common requirement on modern variable-speed drive and UPS-fed circuits where standard Type A or AC RCCBs can false-trip. Rated operational voltage is 220...240 V AC at 50/60 Hz, with a rated insulation voltage of 500 V AC.

Neutral is on the left. IP20 rated (finger-safe) per IEC 60529; IP40 in a modular enclosure.

The impulse withstand rating is 3000 A (8/20 µs waveform) per those standards. Tripping is voltage-independent — the device does not require a neutral-to-earth voltage to operate, so it remains functional even if the supply voltage is lost.

Environmental and durability

Electrical durability is 15,000 cycles under AC-1 resistive load; mechanical durability is 20,000 cycles. The contact position indicator and padlocking provision support lockout/tagout procedures during panel maintenance.

Frequently asked questions

Where can I buy A9Z31240 and how is it quoted?

The A9Z31240 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote.

What is the closest alternative to A9Z31240 in the Acti9 family?

Within the Acti9 iID range, the closest alternative would be a different sensitivity or pole count variant (e.g., 63 A or 4P). For the same 40 A, 30 mA, 2P, Type A-SI configuration, the A9Z31240 is the specific order code; no pin-compatible drop-in replacement exists with identical ratings.

What is the depth of A9Z31240?

The depth is 73 mm.

What compliance documentation does Schneider provide for A9Z31240?

The A9Z31240 is designed to EN/IEC 61008-1 and EN/IEC 61008-2-1 standards. It carries IP20/IP40 ratings per IEC 60529. RoHS, REACH, and UL documentation should be available from Schneider Electric's product compliance portal; the evidence does not list specific RoHS/REACH/UL cert numbers.

MPN
A9Z31240