Schneider Electric iC65N Miniature Circuit Breakers – iC65N 3P C32A

Technical Dossier

Product Details And Specifications

Schneider Electric iC65N Series Technical Notes

The Schneider Electric iC65N series is a globally deployed range of miniature circuit breakers (MCBs) engineered for branch circuit protection in industrial and commercial power distribution systems. Installed across chemical processing plants, oil refineries, nuclear auxiliary power panels, and heavy manufacturing facilities, the iC65N platform occupies a critical position in low-voltage switchgear assemblies worldwide. Its IEC 60898-1 and IEC 60947-2 dual compliance makes it one of the few MCB families accepted across both residential-grade and industrial-grade panel specifications without substitution. The series is rated up to 6 kA breaking capacity at 230/400 V AC, with pole configurations spanning 1P, 2P, 3P, and 4P, and current ratings from 0.5 A to 63 A across B, C, and D trip curve classes.

The Evolution of iC65N Architecture

The iC65 platform was introduced by Schneider Electric as a successor to the C60 and NC100 families, consolidating multiple legacy product lines into a unified DIN-rail form factor. Early iC65 variants were designed for the European IEC market, with the iC65N designation specifically indicating a 6 kA rated breaking capacity — the "N" suffix denoting the standard interrupting performance tier, as opposed to the higher-capacity iC65H (10 kA) and iC65L (15 kA) variants.

The iC65N architecture introduced a standardized 9 mm per pole pitch, enabling compact panel layouts without sacrificing thermal-magnetic trip precision. Over successive production generations, Schneider integrated improved bimetal strip calibration for tighter trip-time tolerances and updated the terminal design to accept both rigid and flexible conductors up to 25 mm² without ferrules. Compatibility with the Acti9 auxiliary accessory ecosystem — including iOF+SD24 combined fault and open/close signal contacts, iACT24 remote actuators, and iMSU motor mechanisms — was formalized in the mid-2010s production runs, making the iC65N a core component of Acti9 active energy management architectures. Facilities that standardized on iC65N in the 2010–2020 window are now entering the long-term maintenance phase, where original catalog availability is narrowing and aftermarket sourcing becomes operationally critical.

iC65N Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed configurations within the iC65N series. Organized by pole count and trip curve:

1-Pole (1P) Configurations

iC65N 1P B6A: 1-pole, B-curve, 6 A — low-load lighting circuit protection.
iC65N 1P B16A: 1-pole, B-curve, 16 A — standard residential branch circuit.
iC65N 1P C6A: 1-pole, C-curve, 6 A — control circuit and instrumentation protection.
iC65N 1P C10A: 1-pole, C-curve, 10 A — general-purpose single-phase branch protection.
iC65N 1P C16A: 1-pole, C-curve, 16 A — motor starter auxiliary circuit protection.
iC65N 1P C32A: 1-pole, C-curve, 32 A — high-current single-phase distribution feeder.

2-Pole (2P) Configurations

iC65N 2P C16A: 2-pole, C-curve, 16 A — single-phase with neutral protection, HVAC control panels.
iC65N 2P C25A: 2-pole, C-curve, 25 A — sub-distribution board feeder with neutral isolation.
iC65N 2P C32A: 2-pole, C-curve, 32 A — dual-pole feeder for high-load single-phase equipment.

3-Pole (3P) Configurations

iC65N 3P B16A: 3-pole, B-curve, 16 A — three-phase lighting and low-inrush load protection.
iC65N 3P C16A: 3-pole, C-curve, 16 A — three-phase motor and pump circuit protection.
iC65N 3P C20A: 3-pole, C-curve, 20 A — three-phase feeder for mid-range industrial loads.
iC65N 3P C25A: 3-pole, C-curve, 25 A — three-phase sub-distribution feeder, process control panels.
iC65N 3P C32A: 3-pole, C-curve, 32 A — three-phase branch protection for motors up to ~15 kW at 400 V. This is the primary SKU on this listing.
iC65N 3P C40A: 3-pole, C-curve, 40 A — three-phase feeder for larger motor loads and distribution boards.
iC65N 3P C63A: 3-pole, C-curve, 63 A — maximum-rated 3P configuration for main feeder protection.
iC65N 3P D10A: 3-pole, D-curve, 10 A — high-inrush load protection, transformer primaries and solenoid circuits.

4-Pole (4P) Configurations

iC65N 4P C25A: 4-pole, C-curve, 25 A — three-phase plus neutral, TN-S system distribution.
iC65N 4P C32A: 4-pole, C-curve, 32 A — four-pole feeder for balanced three-phase plus neutral loads.
iC65N 4P C63A: 4-pole, C-curve, 63 A — maximum-rated 4P configuration for main incoming protection.

Quality Control for the iC65N Range

Each iC65N unit processed by DriveKNMS undergoes a structured inspection and functional verification protocol prior to dispatch. The procedure addresses the specific failure modes documented in the iC65N field service history: contact erosion on high-cycle installations, bimetal strip fatigue in thermally stressed environments, and terminal screw torque loss in vibration-exposed panels.

Inspection steps include: visual examination of the housing for arc flash discoloration and mechanical deformation; manual trip-free mechanism verification across all poles simultaneously; insulation resistance measurement between poles and between poles and earth at 500 V DC; and continuity verification confirming contact resistance within Schneider's published specification band. Units with auxiliary contacts (iOF, iSD) are tested for signal output integrity under simulated trip conditions. Only units passing all checkpoints are released for sale, with individual test records available on request.