Schneider Electric A9F43102 Acti9 iC60N 1P 2A Curve B MCB

A9F43102: Acti9 iC60N 1P 2 A curve B miniature circuit breaker

The A9F43102 is a Schneider Electric Acti9 iC60N miniature circuit-breaker with 1 protected pole, a rated current of 2 A and curve B tripping, using thermal-magnetic technology for overload and short-circuit protection on AC/DC networks. It clips onto a DIN rail and is white, with a toggle handle and a trip indicator. Seven Star LLC supplies the A9F43102 in Oman and the GCC as an independent supplier based in Muscat.

Reading the reference: across the iC60N references we reviewed, the fifth character shows the curve (3 for B, 4 for C), the sixth the number of poles, and the last two digits a rating code. That is our interpretation of the pattern, not a published ordering table, so always confirm against the datasheet. Lifecycle note: the datasheet carries a Discontinued label with the date 15 Aug 2025. Availability is therefore not guaranteed; send the reference and we will check what can be offered, including alternatives.

Technical specifications of the A9F43102

Breaking capacity of the A9F43102

Breaking capacity is where iC60N references differ most, and the figures depend on the supply voltage. The rated ultimate values (Icu) and the household rating (Icn) listed in the datasheet for this reference are:

The service breaking capacity (Ics) states how much of that capability remains usable after a clearing operation:

Compare these numbers with the prospective short-circuit current at your board. At 220–240 V AC the A9F43102 is the relevant column for a 230 V Oman installation; the DC values apply only to specialist DC circuits.

Trip curve and pole arrangement of the A9F43102

Curve B is the lower-threshold characteristic: the datasheet gives a magnetic tripping limit of 4 x In ± 20 %, so the instantaneous trip operates at a low multiple of the rated current. That suits resistive loads, lighting, long cable runs and weak sources where a fault current may be modest, and it is a poor choice for loads with high inrush such as transformers or motors, which could cause nuisance trips.

This is a single-pole device with one protected pole, taking up 2 modules of 9 mm (18 mm wide). It switches one conductor, normally the phase of a 230 V circuit, so the neutral stays connected unless a separate arrangement disconnects it. Confirm the earthing system and local wiring rules before using a single-pole breaker as the only means of isolation.

The thermal element handles sustained overload by bending as the bimetal heats, so it reacts to current over time and is sensitive to ambient temperature, while the magnetic element reacts almost instantly to a short circuit. A contact position indicator and a trip indicator on the front show the state of the device without opening the board.

Where the 2 A rating is used

At 2 A this breaker sits at the very small end of the iC60N scale. Typical homes for it are control-transformer secondaries, instrument and PLC supply feeds, small signalling circuits and auxiliary supplies inside panels, where the job is to clear a fault on thin conductors quickly. The protected current is far below a socket-circuit rating, so the wiring downstream is normally light and the let-through behaviour matters more than raw capacity.

Oman and GCC sites add their own demands: high ambient temperature inside metal enclosures in summer, dust, and humid coastal air. The datasheet lists an operating range of −35 to 70 °C and tropicalisation 2, but a board that runs hot still needs ventilation margin and sensible spacing between breakers. Typical users are electrical contractors, panel shops and maintenance teams in oil and gas facilities, power and water plants, desalination units, petrochemical sites and commercial buildings.

Information to send with an RFQ for the A9F43102

• Exact reference A9F43102 and required quantity.
• Rated current and curve, so we can confirm the reference reads as intended.
• Supply voltage and prospective short-circuit current at the board.
• Any matching accessories such as combs, auxiliary contacts or add-on residual current blocks.
• Delivery location and required date.

Installation and maintenance of the A9F43102

Snap the A9F43102 onto the DIN rail, strip the conductor to 14 mm, and tighten terminals to the datasheet torque: 2 N.m top or bottom. Under-torqued lugs heat up, and over-torqued ones damage the clamp, so use a calibrated screwdriver. The handle accepts a padlock for lock-out during maintenance. After a trip, find the cause before resetting: the trip indicator tells you the breaker operated, not why.

Periodic checks include thermal imaging of terminals under load, retightening where the site procedure requires it, and operating the toggle occasionally to keep the mechanism free. Keep a spare of critical ratings on site, because a failed breaker on a main process circuit can stop a unit.

Selection and ordering checklist for the A9F43102

• Confirm the load current and choose 2 A only if cable and load allow it.
• Check that curve B suits the inrush of the load: low inrush, resistive or lighting.
• Verify the prospective short-circuit current against the breaking capacity table above.
• Match the number of poles (1) to the circuit and earthing system.
• Check the busbar or comb accessory fits the 2-module width.
• Confirm terminal capacity (1–25 mm² rigid) and use the stated torque of 2 N.m.
• Ask about availability and lifecycle status.

Related iC60N references to A9F43102

Within the references reviewed alongside this one, other 1-pole curve B breakers are A9F43101 (1 A), A9F43106 (6 A), A9F43110 (10 A), A9F43116 (16 A), A9F43120 (20 A), A9F43132 (32 A). They share the outline and terminals of the A9F43102 within the same size group but carry different rated currents. The datasheet also lists compatible add-on residual current devices: Vigi iC60 single terminal add-on residual current device 25/40/63 A; Quick Vigi iC60 single terminal add-on residual current device 25/40 A. Earth-leakage protection is a separate block, not built into this breaker, so the A9F43102 does not by itself provide residual-current protection.

Documents and quotation

A datasheet for the A9F43102 is attached on this page as a PDF. It covers the main characteristics, dimensions, environment and packaging data of this reference.

Send the part number A9F43102 and quantity, and we will respond with availability and a quotation. Seven Star LLC is an independent supplier in Muscat; confirm any approval or compliance requirement before ordering.