Introduction
The Schneider Electric Acti9 iC60N 4A MCB is a high-performance miniature circuit breaker engineered to deliver precision protection against overcurrents, short circuits, and electrical faults. As part of Schneider Electric's innovative Acti9 series, it combines reliability, safety, and flexibility for industrial, commercial, and residential electrical systems. In this detailed blog, we’ll explore the technical specifications, features, certifications, and real-world applications of this MCB, showcasing why it remains one of the top choices among electricians and engineers worldwide.
Understanding the Schneider Electric Acti9 iC60N 4A MCB
The Acti9 iC60N 4A MCB (Model A9F44104) is a 1-pole miniature circuit breaker with a 4-ampere rating and a Curve C tripping characteristic. It’s designed to protect small-capacity circuits from overload and short-circuit conditions, providing both thermal and magnetic protection within a single compact housing. Built under the Acti9 range, it serves as a successor to the Multi 9 and Telemecanique C60 series — offering better safety, stronger performance, and compliance with modern standards such as IEC/EN 60898-1 and IEC/EN 60947-2.
With this dual compliance, the Schneider Electric Acti9 iC60N 4A MCB can be installed in domestic, commercial, and industrial environments, providing a versatile solution for small lighting circuits, automation systems, or low-current protection needs.
Technical Specifications of the Schneider Electric Acti9 iC60N 4A MCB
Electrical Ratings
The Schneider Electric Acti9 iC60N 4A MCB features the following electrical specifications:
- Rated Current (In): 4A continuous load
- Poles: 1 protected pole (single-phase device, 18 mm width)
- Tripping Curve: Type C (trips at approximately 8×In)
- Rated Voltage: 230/240V AC (single-phase), 12–48V DC (up to 72V DC with reduced capacity)
- Breaking Capacity: 6kA @ 240V AC (IEC 60898-1) / 50kA @ 240V AC (IEC 60947-2)
- Utilization Category: Category A (instantaneous trip without delay)
This Acti9 MCB is highly capable of interrupting up to 50,000 amps of fault current under the industrial standard, ensuring safe and fast disconnection during fault conditions. It can also be applied to low-voltage DC systems such as battery setups or control circuits, making it flexible for both AC and DC protection.
Mechanical and Design Features
Compact, Modular, and Easy to Install
The Schneider Electric Acti9 iC60N 4A MCB features a modular 18 mm width that allows easy integration into any DIN-rail-mounted electrical panel. The design supports both top and bottom feeding, simplifying wiring during installation. The terminals are bi-directional, finger-safe (IP20), and accept up to 25 mm² solid conductors.
VisiTrip and VisiSafe Indicators
Unique to the Acti9 line, this MCB includes VisiTrip and VisiSafe indicators:
- VisiTrip (Red Indicator): Shows when the breaker has tripped due to a fault.
- VisiSafe (Green Indicator): Confirms that the internal contacts are open, allowing maintenance to be performed safely.
These innovations ensure clear visual status indicators for technicians, reducing troubleshooting time and enhancing safety during maintenance.
Robust and Durable Construction
The housing of the Acti9 iC60N 4A MCB is made from flame-retardant polymer materials that resist heat and electrical tracking. The mechanism is rated for 20,000 mechanical and 10,000 electrical operations, making it suitable for high-frequency switching environments.
Its thermal-magnetic mechanism operates independently of the toggle speed, ensuring consistent tripping performance regardless of manual operation.
Performance and Current-Limitation Technology
The Acti9 iC60N 4A MCB employs Class 3 current limitation technology, which dramatically reduces the let-through energy (I²t) during fault events. By limiting fault current peaks, it minimizes heat and stress on connected cables and devices. This feature extends the lifespan of downstream equipment and contributes to overall system reliability.
Additionally, its Curve C trip profile allows for moderate inrush currents, making it ideal for lighting, motor, or control circuits where temporary surges occur without causing nuisance tripping.
Standards and Certifications
The Schneider Electric Acti9 iC60N 4A MCB complies with multiple international standards:
- IEC/EN 60898-1: For household and similar installations (6kA rated)
- IEC/EN 60947-2: For industrial and commercial use (up to 50kA rated)
- CE Certified (European conformity)
- RoHS and REACh Compliant (environmentally safe materials)
- Green Premium™ Label: Indicates adherence to Schneider’s sustainability and lifecycle responsibility program
It’s also classified under Pollution Degree 3 and Tropicalization Class 2, ensuring reliable performance in humid or industrial conditions.
Compatible Accessories
Schneider Electric’s Acti9 ecosystem allows the iC60N 4A MCB to integrate with various accessories to enhance protection and automation capabilities:
- Auxiliary Contacts (OF/SD): Provide remote status and trip signaling
- Shunt Trip (MX): Allows remote disconnection
- Undervoltage Release (MN): Trips the breaker during low-voltage conditions
- Vigi iC60 Add-On Module: Adds residual current protection, turning it into an RCBO
- Comb Busbars: Simplify multi-breaker wiring in distribution panels
- Padlock Devices: Enable lockout/tagout procedures for maintenance safety
These accessories make the Schneider Electric Acti9 iC60N 4A MCB not just a protection device but a modular control component adaptable to evolving system needs.
Alternative Models and Series Variants
The Acti9 iC60 family includes a wide selection of models, enabling designers to choose the perfect variant for any circuit:
- Current Ratings: 0.5A to 63A
- Trip Curves: B (sensitive), C (standard), and D (for inductive loads)
- Poles: 1P, 1P+N, 2P, 3P, and 4P configurations
- Higher Capacity Versions: iC60H and iC60L (for 10kA–15kA applications)
For instance, if a project requires higher fault current handling, the iC60H series provides up to 10kA under IEC 60898, while the iC60L handles even greater capacities. The A9F44104 (4A C-curve, 1P) remains the go-to variant for small, precision-protected circuits.
Installation and Application Scenarios
The Schneider Electric Acti9 iC60N 4A MCB is built for straightforward installation on standard 35 mm DIN rails, suitable for both new builds and retrofits. It allows for zero spacing between adjacent breakers, optimizing space in panels and consumer units.
Typical Applications:
- Industrial Control Panels: Protecting PLC I/O circuits, transformers, or instrumentation loops.
- Residential Systems: Ideal for low-current circuits like alarms, smoke detectors, or LED lighting.
- Commercial Buildings: Used in lighting distribution panels, HVAC control systems, and emergency circuits.
- DC Systems: Applied in 12V–48V DC setups for telecom, solar, or battery systems.
- Test Benches or Laboratories: Ensures safe protection for individual equipment outlets or sensitive devices.
By maintaining a 6kA breaking capacity (or 50kA under IEC 60947-2 testing), this breaker ensures dependable fault clearance even in demanding environments.
Environmental and Safety Advantages
The Acti9 iC60N 4A MCB supports Schneider’s Green Premium™ initiative, ensuring eco-friendly manufacturing and lifecycle management. It is halogen-free, highly recyclable (over 54% by weight), and safe for industrial recycling or disposal.
Furthermore, its IP20 terminal protection and padlockable handle make it a secure option for technicians following safety lockout procedures. Combined with VisiSafe technology, users can visually confirm circuit isolation, preventing accidental electrical contact.
Maintenance and Reliability
The Schneider Electric Acti9 iC60N 4A MCB is maintenance-free but benefits from periodic inspection and torque verification of terminal screws. Regular toggling of the switch mechanism ensures mechanical integrity over time. For safety assurance, any breaker that has cleared a major short circuit should be inspected or replaced per Schneider’s guidelines.
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Conclusion: A Compact Powerhouse in Circuit Protection
The Schneider Electric Acti9 iC60N 4A MCB stands as a symbol of reliability, safety, and innovation in circuit protection. With its combination of thermal-magnetic precision, high breaking capacity, eco-conscious design, and wide accessory compatibility, it is ideal for engineers and electricians seeking dependable overcurrent protection across diverse environments.
Whether safeguarding industrial control systems, lighting circuits, or sensitive electronic setups, the Acti9 iC60N 4A MCB ensures every circuit operates within safe limits — keeping people, property, and processes protected.
If you’re looking for a detailed product listing or wish to integrate this MCB into your next project, explore the full specifications and compatible accessories on the Industrial Electrical Warehouse product page.
