MCB iC60L-Z2-3 Z 2A 3-pole A9F92302

Protection for low-current and high-requirement circuits

This three-pole miniature circuit breaker from the Acti9 iC60 series is designed for precise circuit protection, where sensitivity to small overloads is crucial, while simultaneously requiring resistance to short-term current surges. Thanks to its Z type tripping characteristic, the device reacts significantly faster than standard type B or C breakers, making it an ideal choice for installations powering electronic devices, sensors, rectifiers, or LED lighting systems that are sensitive to voltage spikes. The rated current of 2 A allows for safe operation in low-power consumption circuits, protecting them from damage even with minimal deviations from the norm.

Key design features and operational safety

The device combines industrial parameters with the ease of installation typical for construction solutions. Its design is based on a solid foundation that guarantees reliability in difficult environmental conditions.

• Visi-Trip and Visi-Safe status indicators: A dual-color indicator is located on the front of the housing. The red color signals an electrical trip (short-circuit or overload), allowing for quick localization of the fault cause without the need to dismantle the device. Meanwhile, the green color informs about the physical opening of the contacts (OFF position), which is crucial for safety during service work – the installer is assured that the circuit is disconnected.
• Double terminals and mounting flexibility: The device enables the connection of conductors with cross-sections from 1 to 25 mm² (single-core) and 1 to 16 mm² (multi-core). The ability to connect two conductors of different cross-sections in a single terminal facilitates installation branching without the need for additional distribution blocks.
• Quick removal: Thanks to a double-latch system, the device can be removed from the DIN rail without tools and without the need to dismantle the busbar. This significantly accelerates modernization or repair work in distribution boards.
• Protection against electric shock: The screw terminals are insulated and have an IP20 protection rating, which minimizes the risk of accidental contact with live parts during work or installation.

Application and resistance to external conditions

This circuit breaker is not limited to typical domestic applications. Its parameters allow for installation in industrial and commercial environments where specific operating conditions exist:

The Z type tripping characteristic makes the device ideal for protecting control systems, sensors, and control transformers. In these applications, inrush currents are low but critical for system stability – a too-slow reaction from a standard breaker could lead to damage to delicate electronics. On the other hand, a high breaking capacity of up to 100 kA at 230 V and 400 V ensures safety even in main industrial distribution boards with high network short-circuit power, where a failure could have catastrophic consequences.

The device is characterized by a wide operating temperature range from -35°C to +70°C. This allows it to be mounted in unheated production halls, technical containers, or outdoor enclosures (provided there is protection from direct sunlight and rain), where other breakers might fail or operate inaccurately. Additionally, energy limiting class 3 means the fastest response to a short circuit – the device "dampens" the short-circuit current before it reaches its peak value, protecting connected devices from thermal and mechanical damage resulting from the flow of enormous energy in a fraction of a second.

Due to compliance with industrial standards IEC/EN 60947-2 and residential construction standards IEC/EN 60898-1, this model offers universal application both in new residential installations (e.g., as protection for dedicated circuits) and in expanded building or industrial automation systems. The rated insulation voltage is 500 V, and the impulse withstand voltage is up to 6 kV, providing an additional safety margin during sudden voltage spikes in the network. It is also worth noting the compatibility with a wide range of Acti9 series accessories – from auxiliary contacts to shunt trips – which allows for the expansion of this breaker's functionality according to the growing needs of the installation. The entire unit is made of