Description

Schneider A9N18377 | Miniature circuit-breaker, Acti9 C120N, 4P, 125 A, C curve, 10000 A (IEC 60898-1), 10 kA (IEC 60947-2)

1. Technical Specifications of Schneider A9N18377

  • Brand: Schneider Electric
  • Series: Acti9 C120N
  • Type: Miniature Circuit Breaker (MCB)
  • Model Number: A9N18377
  • Number of Poles: 4P (Four Pole)
  • Rated Current: 125A
  • Tripping Curve: C Curve (designed for circuits with moderate inrush currents)
  • Breaking Capacity:
    • 10,000A (10kA) as per IEC 60898-1
    • 10kA as per IEC 60947-2
  • Voltage Rating: Suitable for three-phase systems
  • Mounting Type: DIN Rail compatible
  • Compliance: Meets IEC 60898-1 and IEC 60947-2 standards

2. Key Features

  1. High Breaking Capacity (10kA) – Ensures circuit protection in high-energy electrical systems.
  2. Four-Pole Protection – Ideal for three-phase systems, ensuring complete disconnection.
  3. C Curve Tripping – Suitable for moderate inrush current loads, such as lighting and power distribution.
  4. Reliable Overload and Short Circuit Protection – Enhances safety and prevents electrical faults.
  5. Compact and Robust Design – Optimized for panel space efficiency.
  6. Easy Installation on DIN Rail – Allows quick and secure mounting in distribution boards.
  7. Compliant with International Safety Standards – Ensures durability and long-term reliability.

3. Common Applications

  • Industrial Electrical Panels – Provides protection for machinery and heavy-duty equipment.
  • Commercial Buildings – Used in offices, shopping centers, and business complexes.
  • Power Distribution Systems – Essential for three-phase load distribution networks.
  • Lighting Circuits – Ideal for circuits with moderate startup currents.
  • Renewable Energy Systems – Suitable for solar and backup power distribution setups.

 

 

Additional information

brands

Schneider Electric

Specifications

Main
Range Acti9
product name Acti9 C120
Product or component type Miniature circuit-breaker
Device short name C120N
Device application Distribution
Poles description 4P
Number of protected poles 4
Neutral position Left
[In] rated current 125 A at 30 °C
network type AC
Trip unit technology Thermal-magnetic
Curve code C
Breaking capacity 10000 A Icn at 230...400 V AC 50/60 Hz conforming to EN/IEC 60898-1 6 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at <= 500 V DC conforming to EN/IEC 60947-2
Suitability for isolation Yes conforming to IEC 60947-2
Standards EN/IEC 60898-1 EN/IEC 60947-2
Product certifications EAC
Complementary
Network frequency 50/60 Hz
[Ue] rated operational voltage 380...415 V AC 50/60 Hz <= 500 V DC 220...240 V AC 50/60 Hz 440 V AC 50/60 Hz 230...400 V AC 50/60 Hz
Magnetic tripping limit 5...10 x In
[Ics] rated service breaking capacity 7500 A 75 % conforming to EN/IEC 60898-1 - 230...400 V AC 50/60 Hz 4.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 7.5 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 15 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 10 kA 100 % conforming to EN/IEC 60947-2 - <= 500 V DC
Limitation class 3 conforming to EN/IEC 60947-2
[Ui] rated insulation voltage 500 V AC 50/60 Hz conforming to EN/IEC 60947-2
[Uimp] rated impulse withstand voltage 6 kV conforming to EN/IEC 60947-2
Contact position indicator Yes
control type Toggle
local signalling ON/OFF indication
Mounting mode Clip-on
Mounting support 35 mm symmetrical DIN rail
Comb busbar and distribution block compatibility YES
9 mm pitches 12
Height 81 mm
Depth 73 mm
Width 108 mm
Product weight 0.82 kg
Colour White
Mechanical durability 20000 cycles
Electrical durability 5000 cycles conforming to IEC 60947-2
Connections - terminals Tunnel type terminals1…50 mm² rigid Tunnel type terminals1.5…35 mm² flexible
Wire stripping length 15 mm
Tightening torque 3.5 N.m
Earth-leakage protection Separate block
Environment
IP degree of protection IP20 conforming to IEC 60529
Pollution degree 3 conforming to IEC 60947-2
overvoltage category IV
Tropicalisation 2 conforming to IEC 60068-1
Relative humidity 95 % at 55 °C
Operating altitude 2000 m
ambient air temperature for operation -25…70 °C
Ambient air temperature for storage -40…85 °C
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 7.500 cm
Package 1 Width 8.800 cm
Package 1 Length 10.800 cm
Package 1 Weight 775.000 g
Unit Type of Package 2 BB1
Number of Units in Package 2 3
Package 2 Height 8.500 cm
Package 2 Width 9.500 cm
Package 2 Length 33.100 cm
Package 2 Weight 2.390 kg
Unit Type of Package 3 S03
Number of Units in Package 3 18
Package 3 Height 30.000 cm
Package 3 Width 30.000 cm
Package 3 Length 40.000 cm
Package 3 Weight 14.907 kg
Contractual warranty
Warranty 18 months

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