Skip to main content
Log in
Schneider Electric A9DF3740 — Residual Current Breakers (RCCB/RCBO)

Schneider Electric A9DF3740 Acti9 iCV40 RCBO, 40 A, 30 mA, C

MPNA9DF3740
Active

Schneider Electric Acti9 iCV40N RCBO, 40 A, 30 mA, C-curve, 6 kA at 400 V AC, 3P+N, DIN rail mount.

$301.27Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

A9DF3740 — 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
Trip unit technologyThermal-magnetic
Local signalling / indicationFault indication ON/OFF indication
A9DF3740 — 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 durability10000 cycles
Mechanical durability (operating cycles)20000 cycles
A9DF3740 — Identification
ParameterValue
Product nameActi9 iCV40
Product / component typeResidual current breaker with overcurrent protection (RCBO)
Product range / familyActi9
Device short nameiCV40N
A9DF3740 — 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
A9DF3740 — 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
Relative humidity95 % at 55 °C
Operating altitude2000 m
A9DF3740 — Approvals
ParameterValue
StandardsEN/IEC 61009-2-1

Product details

Rated 40 A with a C-curve magnetic trip (5 to 10 x In), it clears faults up to 6 kA at 400 V AC per EN/IEC 61009-2-1. The integrated 30 mA earth-leakage sensitivity catches ground faults before they become shock hazards, making this unit a fit for final subcircuits where both overcurrent and residual current protection are required in a single device.

The C-curve (5–10 x In) means magnetic tripping occurs between 200 A and 400 A for a 40 A unit — suited for loads with moderate inrush like small motor circuits or lighting banks, but not for high-inrush transformers or drives.

The 18 mm phase-to-phase and 9 mm phase-to-neutral pitch matches the standard Acti9 modular spacing. Tunnel terminals accept 1 to 16 mm² rigid or 1 to 10 mm² flexible cable; torque to 2 N·m.

Frequently asked questions

What is the breaking capacity of the A9DF3740?

6 kA Icn at 400 V AC, 50/60 Hz, conforming to EN/IEC 61009-2-1.

Where can I buy the A9DF3740?

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

What does the C-curve mean on this RCBO?

The C-curve magnetic trip operates between 5 and 10 times the rated current (200–400 A for this 40 A unit), making it suitable for circuits with moderate inrush such as small motors or lighting.

MPN
A9DF3740