Circuit Breaker Schneider Electric K60N-C63-3 3P C Curve 63A 6 kA AC (A9K02363)

Three-pole miniature circuit breaker Schneider Electric K60N-C63-3 is a DIN-rail mountable protective device designed to safeguard three-phase circuits in residential and light commercial installations. With a C-type tripping characteristic and a rated current of 63 A, it responds to moderate inrush currents while providing reliable protection against overloads and short circuits. The breaker has a breaking capacity suitable for typical low-voltage distribution networks and is intended for use in distribution boards and panel assemblies.

Advantages

The Schneider Electric K60N-C63-3 offers consistent thermal-magnetic protection with a C curve that balances sensitivity to overloads and tolerance for temporary start-up currents. Its compact three-pole design saves space in distribution enclosures and allows coordinated protection of three-phase circuits. The device is compatible with standard DIN-rail mounting systems and common distribution board accessories, providing straightforward installation and serviceability.

Suitable for

• Protection of three-phase branch circuits in residential apartment blocks and single-family homes with three-phase supply.
• Supply circuits for small motors, HVAC units, and pumps with moderate inrush currents.
• Light commercial and retail electrical installations requiring a 63 A rated breaker with C characteristic.
• DIN-rail distribution panels and consumer units in retrofit and new-build projects.

When it may not be suitable

This breaker may not be appropriate for circuits with very high fault currents where a higher breaking capacity is required, or for installations that demand more sensitive protection curves (such as B or D) to match specific equipment inrush characteristics. It is also not intended as a replacement for dedicated motor starters or devices that require adjustable time-delay or electronic protection functions.

Key specifications

• Poles: 3 (three-pole)
• Tripping characteristic: C curve (thermal-magnetic)
• Rated current: 63 A
• Breaking capacity: 6 kA (AC)
• Mounting: DIN-rail compatible
• Typical application voltage: low-voltage AC distribution networks

How to use

Install the breaker on a standard DIN-rail within the distribution board, following local electrical codes and the panel manufacturer's instructions. Connect line and load conductors to the appropriate terminals and ensure proper torque on terminal screws. Use the breaker as the primary overcurrent protective device for the branch circuit and test operation after installation by switching it on and off. For maintenance, de-energize the circuit before inspection or replacement and verify correct coordination with upstream and downstream protective devices.

What to consider before purchase

• Ensure the rated current (63 A) matches the load demand and conductor sizing in the circuit.
• Confirm the 6 kA breaking capacity is adequate for prospective short-circuit levels at installation point.
• Verify that a C tripping curve is appropriate for connected equipment with respect to start-up inrush currents.
• Check physical dimensions and DIN-rail compatibility for the target distribution board.

Usage recommendations

Coordinate protection settings in the distribution network by assessing upstream main protection and downstream devices to ensure selective operation. Use this three-pole C curve breaker for general-purpose three-phase circuits where moderate inrush tolerance is required and where the specified breaking capacity matches site fault levels.