Schneider Electric A9R71225 Acti9 iID 2P 25 A 30 mA RCCB

A9R71225: Acti9 iID 2P 25 A 30 mA type AC RCCB

The A9R71225 is a Schneider Electric Acti9 iID residual current circuit breaker (RCCB) with 2 poles, a rated current of 25 A, a sensitivity of 30 mA and an earth-leakage protection class of type AC. It clips onto a 35 mm DIN rail, is 36 mm wide (4 modules of 9 mm) and works from 230–240 V AC at 50/60 Hz. Seven Star LLC supplies the A9R71225 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: 2 poles, 25 A, 30 mA, type AC. When a drawing or schedule quotes only a reference, check each of those parameters against it before ordering.

Selection checklist for the A9R71225

• Supply: 230–240 V AC and 2 poles, to match a single-phase circuit.
• Current: the load through the device must not exceed 25 A, and the upstream protection must not exceed the same value.
• Sensitivity: 30 mA against the protection goal, people, equipment or fire.
• Waveform: type AC against the loads on the circuit.
• Backup: a short-circuit device upstream, since the iID does not trip on overcurrent.
• Space: 4 modules, 36 mm of rail.

Dimensions, terminals and wiring of the A9R71225

The A9R71225 is a two-pole device that opens the phase and the neutral together, intended for single-phase circuits at 230–240 V AC. The body measures 36 mm wide, 85 mm high and 69 mm deep, with an embedding depth of 44 mm, and weighs 210 g net. At 4 modules of 9 mm it takes 2 standard 18 mm pole widths of rail. The neutral position is on the left, marked N on the front, and the connection diagram on the housing must be followed so the neutral lands on the correct terminal.

Terminals are single terminals at the top and bottom, accepting 1 to 35 mm² rigid, 1 to 25 mm² flexible and 1 to 25 mm² flexible with ferrule. Strip the conductors to 14 mm and tighten to 3.5 N.m. A padlocking device is listed for locking the toggle in the open position during maintenance, and the contact position indicator on this unit shows whether the poles are open or closed.

Technical specifications of the A9R71225

Choosing 30 mA for the A9R71225

The A9R71225 has a 30 mA threshold, the figure used for supplementary protection of people against direct contact on socket and final circuits. 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 A9R71225 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 30 mA, a trip mechanism opens all 2 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 AC detects sinusoidal alternating residual current, which covers the leakage from ordinary resistive and inductive loads. It is not intended for loads whose faults can produce a pulsating or smooth DC component, so electronic equipment with rectifiers calls for a type A or better device.

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 25 A rating, and check the backup protection against the upstream arrangement.

Typical uses of the A9R71225 in Oman and the GCC

In the region this unit is typically specified for site offices and labour camps, retail units and warehouses and pump houses and utility kiosks, 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.

Where the A9R71225 sits among iID RCCBs

The table compares nearby iID references. Pole count sets the width and voltage, type sets the residual waveform handled, and sensitivity sets the tripping threshold.

Information to send with an RFQ for the A9R71225

• Exact reference A9R71225 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 A9R71225 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 A9R71225, 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.