Schneider Electric A9N18365 Acti9 C120N MCB 3P 80A C-Curve 10kA | Miniature Circuit Breaker

The Schneider Electric A9N18365 is a 3-pole, 80A C-curve miniature circuit breaker from the Acti9 C120N range with 10kA breaking capacity – the Acti9 high-current MCB for 63–125 A incomers and sub-main feeders. It protects cables and equipment against overloads and short circuits in three-phase circuits, motors and sub-distribution feeders, and is installed on a standard DIN rail inside distribution boards and control panels.

Key features

• C-curve tripping characteristic suited to general loads such as lighting, sockets, air conditioners and small motors (trips at 5–10 × In)
• 3-pole design for three-phase circuits, motors and sub-distribution feeders
• Breaking capacity 10kA
• Positive contact indication – the handle shows the real contact position for safe isolation
• Fast clip-on mounting on 35 mm DIN rail and compatibility with standard comb busbars
• Compatible with Acti9 auxiliaries (auxiliary contacts, shunt trips, Vigi earth-leakage add-ons)

Technical specifications

Typical applications

• Apartment, villa and office distribution boards
• Commercial buildings, malls, hospitals and hotels
• Lighting, socket-outlet and air-conditioning circuits
• Control panels, pump panels and HVAC panels
• Replacement of old or faulty MCBs during maintenance

Selection guide

Match the rated current to the cable size of the circuit (for example 10 A for 1.5 mm² lighting, 16–20 A for 2.5 mm² sockets and 25–32 A for 4–6 mm² air-conditioner lines), choose the curve according to the load inrush, and make sure the breaking capacity is higher than the prospective short-circuit current at the board. For earth-leakage protection, combine the MCB with an Acti9 RCCB or use an RCBO.

Frequently asked questions

What is the A9N18365 used for?

It is a 3P 80A C-curve MCB used to protect three-phase circuits, motors and sub-distribution feeders against overload and short circuit in residential, commercial and industrial distribution boards.

Can the A9N18365 protect against electric shock?

No. An MCB protects cables against overload and short circuit only. For protection against earth leakage and electric shock, add a 30 mA RCCB (residual current circuit breaker) upstream or use an RCBO.

What is the difference between the C curve and the B or D curves?

A C-curve breaker trips magnetically between 5 and 10 times its rated current and suits most general loads. B curve (3–5 × In) is for resistive loads and long cables, while D curve (10–20 × In) is for transformers and motors with high inrush current.

Buy Schneider A9N18365 in Egypt

Spark Egypt is a trusted source for original Schneider Electric miniature circuit breaker (MCB)s such as the A9N18365, serving contractors, OEMs, panel builders and plant-maintenance teams with tax invoices and fast delivery to Cairo, Giza, New Cairo, 6th of October, Sheikh Zayed, the New Administrative Capital, Alexandria, the Delta, the Canal cities and Upper Egypt. Contact our technical sales team to confirm selection, accessories and project pricing.