The Clipsal MX9RC463 MAX9 product is a residual current circuit breaker (RCCB)..
MX9RC463 is a 4P RCCB with 63A In rated current, a sensitivity of 30mA with A type protection class.

RCD – Residual Current Devices

Although Australia has one of the safest electrical systems in the world, accidents can still happen. A poorly maintained appliance, a person who innocently pushes something into a power socket or cuts through an electrical wire, a frayed cord, wet hands or carelessness with power tools are all situations that can lead to serious consequences.
The benefits of residual current devices (RCDs) are well documented and the latest version of wiring rules (AS/NZS 3000:2018) makes it mandatory to have RCD protection for all final sub-circuits in residential applications.
Amendment 2 of AS/NZS 3000:2018 makes it mandatory to have type A RCD (no type AC RCD) from May 2023 for additional safety. All RCDs under the MAX9 range are future-ready and already type A.

How an RCD works
The RCD works by constantly monitoring and comparing the current flow in both the Active and Neutral cables of an electrical installation.
During normal operation, these Active and Neutral currents are in balance. However, should any current flow to Earth, an imbalance is created in these circuits. If this imbalance is sufficient, the RCD will cut the electrical supply.
Apart from helping to protect people, RCD will also cut off power to expensive electrical equipment in the event of an electrical fault to Earth. This helps to protect appliances against costly damage and the installation against fire, resulting from faults of this nature.

Features and benefits:

• Covers all potential residential needs
• Line and load can be top or bottom connected, ideal when cabling space is restricted or limited.
• Lift-up terminals. helps to reduce chances of ‘hot spot’ in terminations with all cable strands are locked in
• Compatible with MAX9 18 mm pin type busbar for connections to multiple MCBs
• Double locking clip for ease of installation or removal from MAXBAR
• The earth-leakage protection time delay is instantaneous.
• The (Im) rated breaking and making short circuit capacity is 500A.
• The (Inc/Ic) rated conditional rated short circuit current is 6kA.
• The electrical endurance goes up to 4000 cycles and mechanical endurance is going up to 10000 cycles.
• This product protects against electrical shock by direct or indirect contact and fire hazards.
• It is also compulsory for all equipment in bathrooms, outdoors. As a high sensitivity residual current circuit breaker, it is recommended for all power sockets.
• It has an RCM quality label.
• The Ue rated operational voltage is 415VAC.
• The operating frequency is 50Hz.
• The Ui rated insulation voltage is 440VAC.
• It has a Uimp rated impulse withstand voltage of 4kV.
• It can be mounted on DIN rail for modular installation.
• The width in 9mm pitches is 8.
• The dimensions are (W) 72mm x (H) 85mm x (D) 75mm.
• The product colour is white (RAL9003).
• The product weight is 370g.
• According to IEC 60529 standard, the degree of protection is IP20.
• The pollution degree is 2.
• This product complies with IEC 61008-2-1 and EN/IEC 61008-1 standards.