Description

schneider A9F90376 | Miniature circuit breaker (MCB), Acti9 iC60L, 3P, 6.3A, MA curve, 20kA (IEC/EN 60947-2)

schneider A9F90376 description

Introduction

Circuit breakers are indispensable for protecting electrical systems from overcurrents and short circuits. This article will delve into the Schneider A9F90376, a miniature circuit breaker (MCB) renowned for its robust performance and versatility.

Schneider A9F90376

The Schneider A9F90376 is a 3-pole, 63A MCB from the Acti9 series, featuring a C curve. Designed to handle moderate inrush currents, this MCB is ideal for use in both residential and commercial settings. Its 3-pole configuration allows it to protect three-phase circuits, making it suitable for a variety of applications where reliable protection is essential.

How Circuit Breakers Work

Circuit breakers function as safety devices in electrical systems. They continuously monitor the current flow and trip (interrupt the circuit) when an overcurrent or short circuit is detected. This interruption helps prevent potential damage to the electrical system and connected devices, ensuring safety and reliability.

Types of Circuit Breakers

There are various types of circuit breakers, including Miniature Circuit Breakers (MCBs), Residual Current Circuit Breakers (RCCBs), and more. Each type serves a specific purpose, from protecting against overloads and short circuits to detecting residual currents.

Importance in Safety

The role of circuit breakers in maintaining electrical safety is crucial. They help prevent fires, equipment damage, and electric shocks by interrupting overcurrents and short circuits. Ensuring that circuit breakers function correctly is key to safeguarding electrical systems and ensuring their longevity.

Installation Process

To install the Schneider A9F90376 circuit breaker, follow these steps:

  1. Turn off the main power: Ensure that the main power supply is switched off to prevent any accidents.
  2. Identify the circuit: Determine the circuit where the MCB will be installed.
  3. Connect the MCB: Securely connect the MCB to the circuit, making sure all connections are tight and correctly configured.
  4. Test the installation: After installation, test the MCB to verify that it trips and resets properly.

Maintenance Tips

Maintaining your circuit breaker is essential for optimal performance:

  1. Periodic testing: Regularly test the MCB to ensure it operates correctly.
  2. Inspect for damage: Check the MCB for any physical damage or signs of wear.
  3. Replace faulty units: Replace any malfunctioning MCBs promptly to maintain system safety.

Conclusion

The Schneider A9F90376 MCB offers reliable protection for three-phase circuits, making it a versatile choice for various applications. With proper installation and regular maintenance, it ensures the safety and efficiency of your electrical systems.

Additional information

brands

Schneider Electric

Specifications

Main
Device application Motor
Range Acti9
Product name Acti9 iC60
Product or component type Miniature circuit-breaker
Device short name iC60L
poles description 3P
Number of protected poles 3
[In] rated current 6.3 A
Network type AC
Trip unit technology Magnetic
Curve code MA
Breaking capacity 15 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 40 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2
Utilisation category Category A conforming to EN 60947-2 Category A conforming to IEC 60947-2
Suitability for isolation Yes conforming to EN 60947-2 Yes conforming to IEC 60947-2
Standards IEC 60947-2 EN 60947-2
Complementary
Network frequency 50/60 Hz
Magnetic tripping limit 12 x In +/- 20 %
[Ics] rated service breaking capacity 10 kA 50 % conforming to EN 60947-2 - 380...415 V AC 50/60 Hz 7.5 kA 50 % conforming to EN 60947-2 - 440 V AC 50/60 Hz 10 kA 50 % conforming to IEC 60947-2 - 380...415 V AC 50/60 Hz 7.5 kA 50 % conforming to IEC 60947-2 - 440 V AC 50/60 Hz 20 kA 50 % conforming to EN 60947-2 - 220...240 V AC 50/60 Hz 20 kA 50 % conforming to IEC 60947-2 - 220...240 V AC 50/60 Hz
Limitation class 3 conforming to EN 60898-1 3 conforming to IEC 60898-1
[Ui] rated insulation voltage 500 V AC 50/60 Hz conforming to EN 60947-2 500 V AC 50/60 Hz conforming to IEC 60947-2
[Uimp] rated impulse withstand voltage 6 kV conforming to EN 60947-2 6 kV conforming to IEC 60947-2
Contact position indicator Yes
Control type Toggle
local signalling Trip indicator
mounting mode Fixed
Mounting support DIN rail
Comb busbar and distribution block compatibility Top or bottom: YES
9 mm pitches 6
Height 85 mm
Width 54 mm
Depth 78.5 mm
Net weight 0.375 kg
Colour White
Mechanical durability 20000 cycles
Electrical durability 10000 cycles
Connections - terminals Single terminal (top or bottom) 1…25 mm² rigid Single terminal (top or bottom) 1…16 mm² flexible
Wire stripping length 14 mm for top or bottom connection
Tightening torque 2 N.m top or bottom
Earth-leakage protection Separate block
Environment
IP degree of protection IP20 conforming to IEC 60529 IP20 conforming to EN 60529
Pollution degree 3 conforming to EN 60947-2 3 conforming to IEC 60947-2
Overvoltage category IV
Tropicalisation 2 conforming to IEC 60068-1
Relative humidity 95 % at 55 °C
Operating altitude 0...2000 m
Ambient air temperature for operation -35…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 7.5 cm
Package 1 Width 5.5 cm
Package 1 Length 9.5 cm
Package 1 Weight 329.0 g
Unit Type of Package 2 BB1
Number of Units in Package 2 4
Package 2 Height 8.0 cm
Package 2 Width 9.5 cm
Package 2 Length 22.5 cm
Package 2 Weight 1.38 kg
Unit Type of Package 3 S03
Number of Units in Package 3 44
Package 3 Height 30.0 cm
Package 3 Width 30.0 cm
Package 3 Length 40.0 cm
Package 3 Weight 15.68 kg
Contractual warranty
Warranty 18 months

Main Document

Main Document

Data Sheet : A9F90376

Main Document

Data Sheet : A9F90376

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