IC60N 3P 63A Circuit Breaker Curve D

The Schneider Electric Acti9 iC60N A9F75363 circuit breaker is a modular 3-pole protected, 63 A, D-curve miniature circuit breaker, designed to protect electrical circuits against overloads and short circuits. It offers a breaking capacity of 6 kA at 400 V AC according to IEC/EN 60898-1 and 10 kA at 380-415 V AC according to IEC/EN 60947-2, combining thermal-magnetic protection, high interrupting capacity and a modular format for electrical panels.

Its D curve is especially suitable for circuits that may experience high inrush currents during start-up or energization, such as motors, transformers, machinery and certain HVAC equipment. It also incorporates Schneider Electric’s VisiTrip and VisiSafe technologies, which respectively make it easier to identify a tripped breaker due to a fault and to visually verify the physical opening of the contacts.

63 A three-phase circuit breaker

The Schneider Electric A9F75363 features 3 poles and 3 protected poles, allowing the three phases of a three-phase circuit to be protected and disconnected simultaneously.

Its rated current is 63 A and it uses thermal-magnetic tripping technology. This combines two essential protection functions:

• Thermal protection: acts against sustained overloads that could cause excessive heating of conductors and equipment.
• Magnetic protection: provides a fast response to high short-circuit currents.

D curve for loads with high starting currents

The D curve is designed for circuits where significant current peaks may occur during start-up.

Schneider Electric specifies for this reference a magnetic trip threshold of 12 times the rated current, with a tolerance of ±20 %. This feature allows certain high transient currents to be withstood without unwanted magnetic tripping, provided the installation has been correctly sized.

Due to its characteristics, it can be used in applications such as:

• Electric motors.
• Transformers.
• Industrial machinery.
• Air conditioning and HVAC equipment.
• Pumps and ventilation systems.
• Inductive loads.
• Equipment with high inrush currents.
• Three-phase distribution circuits.

The selection of a D curve must take into account the load characteristics, the available short-circuit current and the circuit disconnection conditions.

6 kA breaking capacity according to IEC 60898-1

In accordance with IEC/EN 60898-1, the Acti9 iC60N A9F75363 has a rated breaking capacity Icn of 6,000 A at 400 V AC.

Schneider Electric also specifies a service breaking capacity of 6 kA, equivalent to 100 % of the rated value, under the conditions indicated by this standard.

This capacity makes it possible to interrupt high fault currents, provided the expected short-circuit level at the installation point does not exceed the device’s performance.

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

For applications in accordance with the industrial standard IEC/EN 60947-2, the ultimate breaking capacity Icu varies depending on the operating voltage.

• 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 180 V DC: 10 kA.

In a typical three-phase 400 V network, this reference therefore offers an Icu of 10 kA according to IEC/EN 60947-2.

Service breaking capacity Ics

The service breaking capacity specified by Schneider Electric for different voltages is:

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

VisiTrip for quick fault identification

The VisiTrip system includes a visual indicator that makes it easy to quickly identify a breaker that has tripped due to an electrical fault.

This signaling helps locate the affected circuit within panels with numerous devices, reducing the time needed to diagnose an incident.

VisiSafe to verify contact opening

The VisiSafe technology allows visual confirmation that the contacts are physically open when the device indicates the corresponding position.

This function improves clarity during maintenance operations and complements the iC60N’s suitability for isolation or disconnection functions within the conditions established by Schneider Electric.

Suitable for industrial isolation

Schneider Electric specifies that the Acti9 iC60N is suitable for industrial isolation in accordance with IEC/EN 60947-2.

This feature allows overcurrent protection and certain circuit isolation functions to be combined in a single device.

Fast Closing technology

The Acti9 iC60 range uses a Fast Closing mechanism. The contacts close independently of the speed at which the user operates the handle.

This system helps reduce contact wear during switching and contributes to maintaining consistent performance throughout the breaker’s service life.

Class 3 current limiting

The Schneider Electric A9F75363 has class 3 current limiting in accordance with IEC/EN 60898-1.

The limiting capability reduces the energy passing through the installation during a short circuit, helping to decrease thermal and electrodynamic stress on cables, busbars and downstream equipment.

500 V insulation voltage

The main dielectric characteristics of the device are:

• Rated insulation voltage Ui: 500 V AC.
• Rated impulse withstand voltage Uimp: 6 kV.
• Mains frequency: 50/60 Hz.
• Overvoltage category: IV.
• Pollution degree: 3.

Compatible with AC and DC current

In addition to standard AC applications, Schneider Electric specifies this reference for certain DC installations up to 180 V DC, within the configurations and conditions indicated by the manufacturer.

Breaking capacity and wiring must be specifically checked when the breaker is used on DC current.

Modular DIN rail mounting

The Acti9 iC60N A9F75363 is designed to be clip-mounted on a 35 mm DIN rail, making it easy to integrate into modular electrical panels.

The device occupies 6 modules of 9 mm, equivalent to a total width of 54 mm or three standard 18 mm modules.

It also supports connection using compatible comb busbars and distribution blocks, from either the top or the bottom.

Terminals for large cross-section conductors

The breaker terminals allow connection of:

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

Connection can be made from the top or bottom of the device, facilitating panel design and cable routing.

Compatible with auxiliaries and Vigi residual current protection

The Acti9 iC60 range allows different Schneider Electric accessories to be added to expand the breaker’s functions.

These include:

• Auxiliary contacts.
• Trip indication contacts.
• Shunt trips.
• Remote monitoring devices.
• Control accessories.
• Compatible Vigi residual current blocks.

This modularity makes it possible to create protection and control assemblies adapted to the needs of each installation.

Mechanical and electrical durability

Schneider Electric specifies a high service life for the iC60N mechanism:

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

These performance levels make it suitable for professional panels subject to regular switching, disconnection and maintenance operations.

IP20 protection

The miniature circuit breaker has an IP20 protection rating in accordance with IEC 60529. When correctly installed inside a compatible modular enclosure, the assembly can achieve a higher protection rating depending on the panel characteristics.

As with any modular protection device, it must be installed inside a suitable electrical enclosure to prevent accidental access to live parts.

Wide operating temperature range

The Schneider Electric A9F75363 is designed to operate in an ambient temperature range of -35 to 70 °C.

For storage, the manufacturer specifies temperatures between -40 and 85 °C. The device also supports relative humidity up to 95 % at 55 °C and an operating altitude of up to approximately 2,000 m within the specified conditions.

Schneider Electric A9F75363 dimensions

• Height: 85 mm.
• Width: 54 mm.
• Depth: 78.5 mm.
• Modular width: 3 modules of 18 mm.
• Net weight: approximately 0.375 kg.
• Color: white.

Schneider Electric A9F75363 technical characteristics

• Brand: Schneider Electric.
• Reference: A9F75363.
• Range: Acti9.
• Model: iC60N.
• Type: modular thermal-magnetic circuit breaker.
• Application: electrical distribution.
• Number of poles: 3P.
• Protected poles: 3.
• Rated current In: 63 A.
• Tripping curve: D.
• Tripping technology: thermal-magnetic.
• Magnetic trip threshold: 12 x In ±20 %.
• Icn at 400 V AC according to IEC/EN 60898-1: 6 kA.
• Icu at 220-240 V AC according to IEC/EN 60947-2: 20 kA.
• Icu at 380-415 V AC according to IEC/EN 60947-2: 10 kA.
• Icu at 440 V AC according to IEC/EN 60947-2: 6 kA.
• Icu up to 180 V DC: 10 kA.
• Ics at 380-415 V AC: 7.5 kA.
• Current limiting class: 3.
• Network type: AC / DC.
• Frequency: 50/60 Hz.
• Rated insulation voltage Ui: 500 V AC.
• Rated impulse withstand voltage Uimp: 6 kV.
• Utilization category: A according to IEC/EN 60947-2.
• Overvoltage category: IV.
• Suitable for isolation: yes.
• VisiTrip: yes.
• VisiSafe: yes.
• Fast Closing: yes.
• Mounting: fixed on 35 mm DIN rail.
• Distribution comb compatibility: top or bottom.
• Rigid conductors: 1-35 mm².
• Flexible conductors: 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.
• Height: 85 mm.
• Width: 54 mm.
• Depth: 78.5 mm.
• Weight: approximately 0.375 kg.
• Standards: IEC/EN 60898-1 and IEC/EN 60947-2.
• EAN: 3606480081019.

Three-phase protection for loads with high inrush current

The Schneider Electric Acti9 iC60N A9F75363 combines a 63 A rated current, three protected poles and a D curve especially suitable for circuits that may present strong starting currents.

Its breaking capacity of 6 kA according to IEC/EN 60898-1 and 10 kA at 380-415 V according to IEC/EN 60947-2, together with VisiTrip, VisiSafe, class 3 current limiting and compatibility with Acti9 accessories, makes it possible to create complete protection solutions for three-phase electrical panels.

Important: before installing a 63 A D-curve circuit breaker, the conductor cross-section and capacity, the expected short-circuit current, the load characteristics and coordination with the rest of the installation’s protection devices must be checked.