IC60N 4P 63A Curve C 10kA Circuit Breaker

The Schneider Electric Acti9 iC60N A9F79463 miniature circuit breaker is a modular automatic circuit breaker with 4 protected poles, 63 A and C curve, designed to protect electrical circuits against overloads and short circuits. It offers a rated breaking capacity Icn of 6 kA at 400 V AC according to IEC/EN 60898-1 and an ultimate breaking capacity Icu of 10 kA at 380-415 V AC according to IEC/EN 60947-2. It incorporates VisiTrip and VisiSafe signaling technologies, is suitable for isolation, and allows the addition of auxiliaries, monitoring functions, and compatible Vigi residual current blocks.

The A9F79463 reference belongs to Schneider Electric's Acti9 iC60N range and uses a thermal-magnetic trip unit. Its four-pole 72 mm wide format, DIN rail mounting, and the possibility of top or bottom connection make installation easy in professional, commercial, tertiary, and industrial distribution boards.

4-pole 63 A miniature circuit breaker

The Schneider Electric A9F79463 has 4 poles and 4 protected poles. This means that the four conductors connected to the breaker are protected against overcurrents, unlike 3P+N models in which the neutral is switched but does not include its own thermal-magnetic protection.

• Number of poles: 4P.
• Protected poles: 4.
• Rated current: 63 A.
• Trip curve: C.
• Trip technology: thermal-magnetic.
• Application: electrical distribution.

Thermal-magnetic protection against overloads and short circuits

The Acti9 iC60N combines two complementary operating mechanisms:

• Thermal protection: acts against sustained overloads that can cause excessive heating of wiring and equipment.
• Magnetic protection: provides rapid disconnection when a high short-circuit current occurs.

This combination makes it possible to protect the circuit against the main types of overcurrent with a single circuit breaker.

C curve

The A9F79463 reference includes a C trip curve. Schneider Electric specifies for this model a magnetic trip threshold of 8 × In ±20%.

In a 63 A miniature circuit breaker, this feature allows certain transient inrush currents to be withstood before instantaneous magnetic tripping occurs, provided the installation has been correctly designed.

The C curve is widely used in distribution circuits and may be suitable for loads with moderate inrush currents, such as:

• Main lines and distribution circuits.
• Sub-distribution boards.
• Lighting systems.
• General-purpose electrical loads.
• Compatible small inductive loads.
• Commercial and tertiary installations.
• Certain professional equipment.

The final curve selection must take into account the minimum available short-circuit current and the characteristics of the load.

6 kA according to IEC/EN 60898-1

According to IEC/EN 60898-1, Schneider Electric specifies for the A9F79463 a rated breaking capacity Icn of 6,000 A at 400 V AC and 50/60 Hz.

This information is especially important because the product is also commercially associated with a 10 kA breaking capacity. Both values are correct, but they correspond to different standards and test conditions.

• Icn according to IEC/EN 60898-1 at 400 V AC: 6 kA.
• Ics according to IEC/EN 60898-1 at 400 V AC: 6 kA, equivalent to 100% of Icn.

10 kA according to IEC/EN 60947-2 at 380-415 V

When the miniature circuit breaker is evaluated according to IEC/EN 60947-2, Schneider Electric specifies an Icu of 10 kA at 380-415 V AC.

The main indicated Icu breaking capacities are:

• 12-133 V AC: 36 kA.
• 220-240 V AC: 20 kA.
• 380-415 V AC: 10 kA.
• 440 V AC: 6 kA.
• Up to 250 V DC: 10 kA.

Therefore, the commercial designation of 10 kA should be understood as the ultimate breaking capacity Icu at 380-415 V according to IEC/EN 60947-2, and not as the Icn of IEC/EN 60898-1.

Service breaking capacity Ics

Schneider Electric also specifies the service breaking capacity Ics according to IEC/EN 60947-2:

• 220-240 V AC: 15 kA, equivalent to 75% of Icu.
• 380-415 V AC: 7.5 kA, equivalent to 75% of Icu.
• 440 V AC: 4.5 kA, equivalent to 75% of Icu.
• Up to 250 V DC: 10 kA, equivalent to 100% of Icu under the specified conditions.

Before installing the miniature circuit breaker, it must be verified that its breaking capacity is suitable for the maximum prospective short-circuit current at the installation point.

Energy limiting class 3

The Acti9 iC60N has energy limiting class 3 according to IEC/EN 60898-1.

During a short circuit, the current limiting capability helps reduce peak current and the energy passing through the circuit before opening is completed, reducing thermal and electrodynamic stress on downstream conductors and components.

VisiTrip for quick trip identification

The Schneider Electric A9F79463 incorporates VisiTrip technology, designed to make it easier to identify the circuit that has tripped due to a fault.

This local indication is especially practical in panels with numerous circuit breakers, as it allows the protection that has operated to be located more quickly and reduces the time needed for diagnosis.

VisiSafe and safe contact position

VisiSafe technology makes it possible to visually confirm that the contacts are in the open position, providing additional information during maintenance and circuit isolation tasks.

Schneider Electric also declares this miniature circuit breaker suitable for isolation according to IEC/EN 60898-1 and IEC/EN 60947-2.

Suitable for industrial isolation

The A9F79463 complies with the industrial isolation requirements of IEC/EN 60947-2. This feature allows it to be used as an isolation device within the corresponding maintenance and safety procedures, always respecting the applicable installation standards.

Use on AC and DC current

The technical data sheet identifies the A9F79463 as a breaker suitable for alternating current and direct current networks, within the voltages and configurations specified by Schneider Electric.

For direct current, an Icu of 10 kA up to 250 V DC is indicated. For DC applications, it is essential to respect the connection diagrams, polarity, and number of poles indicated by the manufacturer.

500 V Ui insulation voltage

The main dielectric characteristics include:

• Rated insulation voltage Ui: 500 V AC.
• Impulse withstand voltage Uimp: 6 kV.
• Utilization category: A according to IEC/EN 60947-2.
• Overvoltage category: IV.
• Pollution degree: 3.
• Frequency: 50/60 Hz.

DIN rail mounting

The miniature circuit breaker is designed for fixed installation on a DIN rail, making it easy to integrate into modular panels and distribution cabinets.

• Mounting type: fixed.
• Support: DIN rail.
• 9 mm pitches: 8.
• Equivalent width: 4 modules of 18 mm.

Dimensions of the Schneider Electric A9F79463

• Width: 72 mm.
• Height: 85 mm.
• Depth: 78.5 mm.
• Weight: approximately 0.5 kg.
• Color: white.

The 72 mm format allows thermal-magnetic protection on four poles within four standard panel modules.

Top or bottom connection

The device supports connection from the top or bottom and is compatible with suitable Acti9 distribution systems and comb busbars.

The terminals accept:

• Rigid conductor: 1 to 35 mm².
• Flexible conductor: 1 to 25 mm².
• Strip length: 14 mm.
• Tightening torque: 3.5 Nm.

Correct terminal tightening is especially important in a 63 A device to avoid contact resistance and abnormal heating.

Compatible with Acti9 auxiliaries

The iC60N can be expanded with different compatible devices and accessories from the Acti9 platform.

Schneider Electric provides the possibility of adding:

• Auxiliary contacts.
• Signaling contacts.
• Auxiliary releases.
• Remote monitoring functions.
• Locking accessories.
• Compatible distribution combs.
• Compatible Vigi residual current blocks.

Exact compatibility must be checked using the specific accessory reference.

Possibility of adding Vigi residual current protection

The A9F79463 is a thermal-magnetic circuit breaker: it provides protection against overloads and short circuits, but does not include built-in residual current protection against earth leakage.

Schneider Electric provides for association with a compatible Vigi block when residual current protection needs to be added.

20,000 mechanical operating cycles

The specified service life reaches:

• Mechanical durability: 20,000 cycles.
• Electrical durability: 10,000 cycles.

These performance levels are intended for professional installations in which the device may perform numerous operations during its service life.

IP20 protection rating

The Schneider Electric A9F79463 has an IP20 protection rating according to IEC/EN 60529.

As a modular device, it must be installed inside a suitable enclosure or panel that provides the environmental protection level required for the installation.

Environmental conditions

• Operating temperature: -35 to 70 °C.
• Storage temperature: -40 to 85 °C.
• Relative humidity: up to 95% at 55 °C.
• Maximum operating altitude: 2,000 m.
• Tropicalization: level 2 according to IEC 60068-1.

Applications of the A9F79463 miniature circuit breaker

Due to its 4-pole configuration, 63 A rating, C curve, and breaking capacity, the Acti9 iC60N A9F79463 can be used, provided the electrical calculation confirms suitability, in:

• Main and sub-distribution boards.
• Commercial installations.
• Office buildings.
• Tertiary installations.
• Professional panels.
• Three-phase lines requiring four protected poles.
• Distribution circuits with moderate inrush currents.
• Certain low-voltage industrial installations.

Technical characteristics of the Schneider Electric A9F79463

• Brand: Schneider Electric.
• Reference: A9F79463.
• Range: Acti9.
• Product: Acti9 iC60.
• Model: iC60N.
• Type: modular thermal-magnetic circuit breaker.
• Application: distribution.
• Number of poles: 4P.
• Protected poles: 4.
• Rated current In: 63 A.
• Curve: C.
• Trip: thermal-magnetic.
• Magnetic threshold: 8 × In ±20%.
• Icn at 400 V AC according to IEC/EN 60898-1: 6 kA.
• Ics at 400 V AC according to IEC/EN 60898-1: 6 kA.
• Icu at 220-240 V AC: 20 kA.
• Icu at 380-415 V AC: 10 kA.
• Icu at 440 V AC: 6 kA.
• Icu up to 250 V DC: 10 kA.
• Ics at 220-240 V AC: 15 kA.
• Ics at 380-415 V AC: 7.5 kA.
• Ics at 440 V AC: 4.5 kA.
• Limiting class: 3 according to IEC/EN 60898-1.
• Network type: AC/DC.
• Frequency: 50/60 Hz.
• Utilization category: A.
• Ui: 500 V AC.
• Uimp: 6 kV.
• Overvoltage category: IV.
• Pollution degree: 3.
• Suitable for isolation: yes.
• VisiTrip: yes.
• VisiSafe: yes.
• Contact position indicator: yes.
• Local trip indicator: yes.
• Operating mechanism: toggle.
• Mounting: fixed on DIN rail.
• 9 mm pitches: 8.
• Width: 72 mm.
• Height: 85 mm.
• Depth: 78.5 mm.
• Weight: approximately 0.5 kg.
• Rigid conductor: 1-35 mm².
• Flexible conductor: 1-25 mm².
• Strip length: 14 mm.
• Tightening torque: 3.5 Nm.
• Protection rating: IP20.
• Mechanical durability: 20,000 cycles.
• Electrical durability: 10,000 cycles.
• Operating temperature: -35 to 70 °C.
• Storage temperature: -40 to 85 °C.
• Maximum altitude: 2,000 m.
• Standards: IEC/EN 60898-1 and IEC/EN 60947-2.
• EAN: 3606480093470.

63 A miniature circuit breaker with VisiTrip and VisiSafe

The Schneider Electric Acti9 iC60N A9F79463 combines four protected poles, a 63 A rating, C curve, and high breaking capacity in a 72 mm modular format. VisiTrip signaling makes it easier to locate a tripped circuit, while VisiSafe allows visual confirmation of contact opening.

Its breaking capacity reaches 6 kA Icn at 400 V according to IEC/EN 60898-1 and 10 kA Icu at 380-415 V according to IEC/EN 60947-2, so it is important to always indicate the associated standard when specifying the device breaking capacity.

Important: the A9F79463 does not include integrated residual current protection. Before installation, the circuit design current, conductor cross-section, trip curve, prospective short-circuit current, and required breaking capacity must be checked. When protection against earth leakage is required, it must be associated with a correctly selected compatible residual current solution.