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Schneider Electric A9DH3740 — Residual Current Breakers (RCCB/RCBO)

Schneider Electric A9DH3740 Acti9 iCV40 RCBO, 40 A, 30 mA, T

MPNA9DH3740
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Schneider Electric Acti9 iCV40 RCBO, 3P+N, 40 A, 30 mA earth leakage, curve B, 6 kA breaking capacity at 400 V AC, DIN rail mount.

Schneider Electric A9DH3740 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9DH3740 — Residual Current Protection
ParameterValue
Earth-leakage sensitivity (IΔn)30 mA
Earth-leakage protection class / typeType AC
Earth-leakage trip time delayInstantaneous
Residual-current tripping technologyVoltage independent
Trip unit technologyThermal-magnetic
Local signalling / indicationFault indication ON/OFF indication
A9DH3740 — Electrical Ratings
ParameterValue
Rated current (In)40 A
Rated operational voltage (Ue)400 V AC 50/60 Hz
Poles description3P + N
Neutral pole positionLeft
Network typeAC
Network frequency50/60 Hz
Rated insulation voltage (Ui)440 V AC 50/60 Hz
Rated impulse withstand voltage (Uimp)4 kV
Overvoltage categoryIII conforming to IEC 60364
Device location in systemOutgoer
Electrical durability20000 cycles
Mechanical durability (operating cycles)20000 cycles
A9DH3740 — Identification
ParameterValue
Product nameActi9 iCV40
Product / component typeResidual current breaker with overcurrent protection (RCBO)
Product range / familyActi9
Device short nameiCV40N
A9DH3740 — Mechanical
ParameterValue
Mounting supportDIN rail
Mounting modeClip-on
Control typeToggle
Width in 9 mm modules10
Terminal connectionsTunnel type terminals top or bottom 1...16 mm² rigid Tunnel type terminals top or bottom 1...10 mm² flexible
Wire stripping length14 mm for top or bottom connection
Terminal tightening torque2 N.m top or bottom
Width90 mm
Height93 mm
Depth73 mm
A9DH3740 — 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
Relative humidity95 % at 55 °C
Operating altitude2000 m
A9DH3740 — Approvals
ParameterValue
StandardsEN/IEC 61009-2-1

Product details

The Schneider Electric A9DH3740 is an Acti9 iCV40 residual current circuit breaker with overcurrent protection (RCBO) rated at 40 A with 30 mA earth-leakage sensitivity. It carries a 6 kA breaking capacity at 400 V AC (EN/IEC 61009-2-1) and a B-curve magnetic trip (3...5 x In).

The thermal-magnetic trip unit combines a bimetal for overload protection and a solenoid for short-circuit protection. The integrated earth-leakage module (30 mA sensitivity) eliminates the need for a separate RCCB upstream, saving DIN-rail space.

Deployment context

The clip-on DIN-rail mounting (EN 60715) and 90 mm width mean it fits standard distribution panels. The 2 N.m tightening torque and tunnel terminals accept 1...16 mm² rigid or 1...10 mm² flexible cable, which covers most final-circuit wiring sizes.

Frequently asked questions

Where can I buy the A9DH3740 and how do I get a price?

The A9DH3740 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the A9DH3740's breaking capacity?

The A9DH3740 has a breaking capacity of 6000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 61009-2-1.

What compliance documentation does the A9DH3740 carry?

The A9DH3740 is certified to EN/IEC 61009-2-1 and carries EAC and VDE quality labels.

MPN
A9DH3740