Schneider Electric A9D15840 iC60H RCBO 1P + N 40 A C 100 mA

A9D15840: Acti9 iC60H RCBO 1P + N 40 A C curve 100 mA

The A9D15840 is a Schneider Electric Acti9 iC60 RCBO, a residual current breaker with overcurrent protection. The datasheet lists it as iC60H RCBO with 1P + N, 40 A at 50 °C, curve C, 100 mA earth-leakage sensitivity, type A earth-leakage protection and a 10000 A breaking capacity at 240 V AC. Seven Star LLC supplies the A9D15840 in Oman and the GCC as an independent supplier based in Muscat.

One device combines the overcurrent protection of a miniature circuit breaker with the residual current protection of an RCCB, so a single circuit gets both functions in a 18 mm body (2 modules of 9 mm).

Technical specifications of the A9D15840

Earthing systems and wiring for the A9D15840

The datasheet lists the earthing system for this unit as TN. An earthing-system entry of TN only means the datasheet does not list use on TT or IT networks for this reference, so check the system before specifying it. The device has a left-hand neutral position and the connection diagram printed on the front must be followed. It is a single-pole plus neutral device: the phase is switched and protected, and the neutral is carried through the same compact body.

C curve and 40 A rating on the A9D15840

C-curve devices are designed to trip magnetically between roughly 5 and 10 times the rated current, the usual compromise for lighting, sockets and small motors. For 40 A that is about 200 to 400 A. This band is the general characteristic of the curve and is not a figure quoted in the datasheet, so check the manufacturer’s curve for the exact limits.

The breaking capacity of this unit is 10000 A at 240 V AC and the service breaking capacity Ics is 7500 A, with limitation class 3 in the datasheet. Compare the 10000 A value with the prospective short-circuit current at the board, and size the cable first from the load and installation method, then choose the 40 A device to protect it.

How the A9D15840 combines two protections

The thermal-magnetic element of this unit reacts to overload and short circuit, while a built-in residual current element watches for leakage to earth at 100 mA. Either function opens the circuit. The datasheet lists voltage-dependent residual current tripping, which means the earth-leakage function relies on the line voltage, and it lists suitability for isolation, so the device can serve as the isolating point of the circuit it protects.

The 100 mA threshold is mostly used for equipment and fire-risk protection rather than for protecting people. Because the RCBO is installed per circuit, a leakage fault trips only that circuit, whereas a shared RCCB in front of several breakers takes the whole group out. That is the practical reason to choose an RCBO for circuits that must not be disturbed by faults elsewhere.

Where the A9D15840 sits among iC60H RCBOs

The four iC60H RCBO references in this lane differ in pole description, rating, curve and sensitivity.

Operating conditions and durability of the A9D15840

Operation is listed from -15 to 60 °C with storage from -40 to 85 °C and humidity of 95 % at 55 °C, tropicalisation level 2. Protection is IP20, and IP40 when the device sits in a modular enclosure. The datasheet quotes 20000 mechanical and 5000 electrical cycles, an insulation voltage of 400 V AC and a 4 kV impulse withstand.

In hot, humid Gulf installations the board enclosure matters more than the device rating, because the this unit sits in whatever temperature the board reaches. Leave ventilation space and avoid mounting it directly beside heat-producing equipment.

Dimensions, terminals and handling of the A9D15840

The A9D15840 is 18 mm wide, 110 mm high and 77.5 mm deep and weighs 205 g net. Terminals are screw clamps: at the top 1 to 25 mm² rigid or 1 to 16 mm² flexible, at the bottom 1 to 16 mm² rigid or 1 to 10 mm² flexible. Strip 13 mm at the bottom and 14 mm at the top, and tighten to 3.5 N.m at the top and 2 N.m at the bottom. The two different torque values are easy to overlook on site.

A 4 mm padlock can lock the toggle, and the datasheet lists comb busbar and distribution block compatibility as no, so plan wiring with cables rather than a comb busbar for this unit.

Information to send with an RFQ for the A9D15840

• Exact reference A9D15840 and the quantity needed.
• Supply voltage, system type and earthing arrangement.
• Load description and cable size for the circuit.
• Prospective short-circuit current at the board, if known.
• Other ratings or curves needed in the same order.
• Delivery location and timeline.

Before ordering, check that the board enclosure, busbar arrangement and neighbouring devices leave enough room for heat to escape, since crowded boards in hot rooms run closer to their limits than the rated ambient suggests.

Documents and quotation

The Schneider Electric datasheet for the A9D15840 is attached on this page and holds the full specification summarised above. It is dated 8 Nov 2026 as printed on the manufacturer’s document.

Send us the reference A9D15840, quantity and delivery location and Seven Star LLC will reply to your request. We supply as an independent supplier based in Muscat and do not act for the manufacturer.