Schneider Electric EZ9F34363 Easy9 MCB 3P 63A 4.5kA Type C Miniature Circuit Breaker

The Schneider Electric EZ9F34363 is a 3-pole 63A miniature circuit breaker from the Easy9 series, rated at 400V AC with a breaking capacity of 4,500A (4.5kA). Designed for DIN rail installation in residential distribution boards and light commercial panels, the EZ9F34363 provides reliable overcurrent and short-circuit protection in a compact modular format suited to modern electrical installations.

Technical Specifications

Applications & Use Cases

• Residential distribution: Final circuit protection in consumer units and domestic distribution boards.
• Light commercial installations: Overload and short-circuit protection for office lighting, HVAC, and general power circuits.
• DIN rail panels: Modular form factor integrates seamlessly into standard 35mm DIN rail enclosures.
• Building services: Suitable for protecting three-phase loads in small commercial premises, apartment blocks, and communal areas.

Frequently Asked Questions

What is the breaking capacity of the EZ9F34363?

The Schneider Electric EZ9F34363 has a breaking capacity (Icu) of 4,500A (4.5kA) at 400V AC, making it suitable for installations with moderate prospective short-circuit currents typical of residential and light commercial networks.

How wide is the EZ9F34363 on a DIN rail?

The Easy9 MCB range uses standard modular widths. The 3-pole EZ9F34363 occupies a 3-module (54mm) footprint on a 35mm DIN rail, consistent with the Easy9 series format.

Is the EZ9F34363 suitable for three-phase circuits?

Yes. The EZ9F34363 is a 3-pole MCB rated at 400V AC and is designed to protect three-phase circuits up to 63A with simultaneous disconnection of all three live conductors.