Schneider Electric A9R34463 Acti9 iID 4P 63 A 300 mA RCCB

A9R34463: Acti9 iID 4P 63 A 300 mA type A-SI RCCB

The A9R34463 is a Schneider Electric Acti9 iID residual current circuit breaker (RCCB) with 4 poles, a rated current of 63 A, a sensitivity of 300 mA and an earth-leakage protection class of type A-SI. It clips onto a 35 mm DIN rail, is 72 mm wide (8 modules of 9 mm) and works from 400–415 V AC at 50/60 Hz. Seven Star LLC supplies the A9R34463 in Oman and the GCC as an independent supplier based in Muscat.

The datasheet does not publish an ordering-code table, so we do not decode the digits of the reference ourselves. Treat the parameters listed on this page, which are copied from the datasheet, as the definition of the part: 4 poles, 63 A, 300 mA, type A-SI. When a drawing or schedule quotes only a reference, check each of those parameters against it before ordering.

Durability, ratings and environment of the A9R34463

The datasheet lists 20000 mechanical and 15000 electrical operating cycles, an insulation voltage Ui of 500 V AC, a 6 kV impulse withstand and pollution degree 3. Protection is IP20 on the device and IP40 when it sits in a modular enclosure. It operates from -25 to 60 °C and may be stored from -40 to 85 °C.

The wider operating range, from -25 °C, is helpful in boards that see large swings in temperature, such as unconditioned outdoor kiosks. Inside a closed board in a hot Oman summer the internal temperature can pass the room temperature by a wide margin, so give this unit ventilation and spacing from heat sources such as large contactors and busbars.

Technical specifications of the A9R34463

Typical uses of the A9R34463 in Oman and the GCC

In the region this unit is typically specified for retail units and warehouses, site offices and labour camps and villa and apartment blocks, always together with a miniature circuit breaker or fuse ahead of it. Heat, dust and coastal humidity are the main ageing factors, and they favour closed, well-sealed enclosures and regular test-button checks. For process plants and critical loads the choice of residual current protection and its sensitivity is normally set by the project specification, so follow that over any general advice.

Choosing 300 mA for the A9R34463

The A9R34463 has a 300 mA threshold, typically chosen for fire-risk protection and as a general incomer or sub-board device rather than for personal protection. The datasheet gives an instantaneous tripping time, so the device acts without an intentional delay. If it is installed upstream of other residual current devices, remember that it can trip together with them, and discrimination has to be arranged with a selective device or by splitting the circuits.

Leakage current accumulates across all the equipment downstream, and filters in drives, computers and cleaners all leak a little to earth. If many such loads share one RCCB, the sum may approach the tripping threshold and cause nuisance trips, which is why a board is often split into several residual current stages instead of one large one. Check the earthing system and the installation rules that apply on your site before settling on a sensitivity.

How the A9R34463 protects: residual current without overcurrent

An RCCB compares the current going out on the live conductors with the current coming back. If the difference reaches its sensitivity, which for this unit is 300 mA, a trip mechanism opens all 4 poles. The datasheet lists voltage-independent tripping, meaning the device does not need the line voltage to operate, so it still trips on a residual current if the supply dips or a neutral is lost upstream.

Type A-SI is a type A device, which detects sinusoidal and pulsating DC residual current, with an added super-immunised design. The datasheet describes it as Super Immunised and lists an 8/20 µs impulse withstand of 3000 A, which points to better resistance to nuisance tripping from surges and from the high-frequency leakage of electronic loads. Verify the immunity claims you rely on against the datasheet and the project specification.

The iID has no thermal or magnetic element. It will not open on an overload or a short circuit, and the listed 10 kA conditional short-circuit rating assumes a short-circuit protective device ahead of it. Pair this unit with a miniature circuit breaker or fuse of no more than its own 63 A rating, and check the backup protection against the upstream arrangement.

Installation, testing and upkeep of the A9R34463

Isolate and prove dead, clip the A9R34463 onto the DIN rail, connect conductors as shown on its diagram and torque to 3.5 N.m. After energising, press the test button on the front: the device should trip at once, and the toggle then needs resetting by hand. A failing test means the device must be replaced, not reset.

Plan for a periodic operation of the test button, usually monthly in service. Record the installed rating and sensitivity on the board schedule, and when an RCCB trips for real, find the leakage before closing it again: a repeated trip points to a damaged cable, wet equipment or an earth fault rather than a faulty device.

Selection checklist for the A9R34463

• Supply: 400–415 V AC and 4 poles, to match a three-phase four-wire circuit.
• Current: the load through the device must not exceed 63 A, and the upstream protection must not exceed the same value.
• Sensitivity: 300 mA against the protection goal, people, equipment or fire.
• Waveform: type A-SI against the loads on the circuit.
• Backup: a short-circuit device upstream, since the iID does not trip on overcurrent.
• Space: 8 modules, 72 mm of rail.

Information to send with an RFQ for the A9R34463

• Exact reference A9R34463 and the quantity needed.
• Supply voltage, system type and earthing arrangement.
• Load description, including drives or electronic equipment on the circuit.
• Upstream protective device and its rating.
• Other poles, ratings or sensitivities needed in the same order.
• Delivery location and timeline.

Documents and quotation

The Schneider Electric datasheet for the A9R34463 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 A9R34463, 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.