Introduction
When a three-phase feeder trips without warning, every minute of downtime costs money. The Schneider Electric iC60N 3P C16 miniature circuit breaker from the Acti9 iC60 series gives maintenance teams a dependable way to protect final distribution circuits. This device combines a 16A rating with a C trip curve, so it tolerates brief inrush currents from motors and transformers while still clearing genuine faults. As a direct replacement part, it helps you restore protection quickly and keep production running.
Technical Specifications
Three parameters define how this breaker behaves in your panel. First, the 16A rated current suits lighting, socket, and small motor circuits that draw moderate continuous loads. Second, the C-curve thermal-magnetic trip releases at 8×In ±20% on the magnetic side, which absorbs start-up surges without nuisance tripping. Third, the 6 kA breaking capacity at 230/400V (IEC 60898-1) lets the device interrupt short-circuit currents safely in commercial and light industrial boards. The 400V AC rated voltage matches standard three-phase distribution, and the breaker conforms to EN/IEC 60898-1 and EN/IEC 60947-2.
Where This Breaker Fits
Maintenance engineers install the iC60N 3P C16 in panelboards feeding three-phase equipment. In a packaging line, it protects the motor branch that drives conveyors, where C-curve tolerance prevents trips during frequent starts. In a workshop, it guards a distribution sub-panel serving welders and compressors. In a commercial building, it backs up lighting and power circuits that need reliable overcurrent protection. Each scenario benefits from the same core strength: predictable tripping and simple replacement.
Installation and Setup
The device mounts on a standard 35 mm DIN rail, so it drops into most existing enclosures without adapters. Its compact 85 × 54 × 78.5 mm housing and 0.375 kg weight keep panel space and shipping costs low. Before energizing, confirm the circuit voltage does not exceed the 400V AC rating and that the load matches the 16A capacity. Torque terminations to the manufacturer’s specification, and verify the C-curve suits the connected load. Always follow local electrical codes and lock out the supply during work.
Maintenance and Reliability
The breaker is rated for 20,000 mechanical cycles and 10,000 electrical cycles, which supports years of normal switching. It operates from -35 to 70 °C, covering most indoor industrial environments. During routine inspections, check for discoloration, heat marks, or loose terminals. Test tripping only with approved methods, and replace the unit if it fails to latch or trips below its rating. Because the Acti9 iC60 range remains active, spare units stay available, which shortens repair lead times.
Compatibility and Integration
This 3-pole breaker integrates with standard DIN-rail distribution boards and accepts common busbar and comb systems used with Acti9 devices. It works alongside contactors, relays, and surge protection in the same panel. The 6 kA breaking capacity coordinates with upstream protection in many commercial installations, though you should verify selectivity for your specific network. If you are upgrading an older panel, check that the rail depth and terminal spacing match the 85 × 54 × 78.5 mm footprint.
Selection Guide
Before ordering, confirm the pole count, rated current, trip curve, and breaking capacity match your application. The iC60N 3P C16 covers 16A three-phase circuits with C-curve characteristics. If your load needs a different curve or current, select the appropriate Acti9 variant. SpareTechPLC supplies this model and can help you verify compatibility with your existing panel. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
FAQs
What does the C-curve mean on this breaker?
The C-curve magnetic trip operates at 8×In ±20%, so it tolerates motor and transformer inrush while still protecting the circuit.
Can I use this breaker for a single-phase circuit?
It is a 3-pole device rated 400V AC. For single-phase use, confirm your wiring and code requirements first.
What is the breaking capacity of the iC60N 3P C16?
It provides 6 kA at 230/400V under IEC 60898-1, suitable for many commercial and light industrial boards.
How long does the breaker last?
Schneider rates it for 20,000 mechanical and 10,000 electrical cycles under normal conditions.
Is this model still in production?
Yes, the Acti9 iC60 range is active. Verify availability with SpareTechPLC before ordering.
