Overview

• The Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) is a crucial safety device engineered to provide paramount protection against electrical shock and fire hazards in single-phase electrical installations.
• As a prominent member of Schneider Electric's reliable Easy9 range, this 2-pole Residual Current Circuit Breaker (RCCB) is specifically designed to detect and swiftly interrupt small leakage currents that a miniature circuit breaker (MCB) or fuse cannot, making it indispensable for human safety and equipment integrity.
• With a robust rated current of 63 Amperes and a highly sensitive earth-leakage tripping threshold of 30 milliamperes (mA), this AC type RCCB offers instantaneous protection at 230 V, ensuring immediate disconnection in the event of a fault.
• The EZ9R03263 model is a voltage-dependent device, offering dependable performance conforming to both SANS 767 and IEC 61008-1 standards, making it an ideal solution for a wide variety of residential, commercial, and light industrial applications where sensitive earth-leakage protection is required.

Features

• Two-Pole Configuration (2P): Provides simultaneous disconnection of both live and neutral conductors, ensuring complete circuit isolation for single-phase systems.
• 63A Rated Current (In): Capable of handling continuous current up to 63 Amperes, suitable for main incoming protection or sub-distribution circuits with significant loads.
• 30mA Earth-Leakage Sensitivity: Detects even small, potentially dangerous leakage currents, providing high-level protection against direct and indirect electrical shocks.
• AC Type Earth-Leakage Protection: Designed to detect sinusoidal alternating earth leakage currents, which are common in most residential and commercial electrical systems.
• Instantaneous Earth-Leakage Protection Time Delay: Guarantees immediate tripping upon detection of an earth leakage fault, minimizing exposure to hazardous conditions.
• Voltage Dependent Residual Current Tripping Technology: Operates based on the presence of line voltage, ensuring the device is always active when the circuit is energized.
• 500A Rated Breaking and Making Capacity: Capable of safely interrupting and making circuits with currents up to 500 Amperes, ensuring robust performance under fault conditions.
• 3000A (3kA) Rated Conditional Short-Circuit Current: Can withstand and safely coordinate with an upstream Easy9 MCB with a 3 kA breaking capacity at 63A, providing comprehensive fault protection.
• DIN Rail Mountable: Features a "clip-on" mounting mode for quick and secure installation onto standard 35mm DIN rails, simplifying panel assembly.
• Contact Position Indicator: Provides a clear visual indication of the device's operational status (ON/OFF) for enhanced safety and troubleshooting.
• Integrated Test Button: Allows for regular functional testing of the RCCB to ensure its continuous operational integrity and compliance with safety standards.
• High Durability: Offers substantial mechanical durability of 5,000 cycles and electrical durability of 2,000 cycles (at 230V AC 50Hz), promising a long service life.
• Robust Terminal Connections: Equipped with tunnel type terminals for rigid (1...35 mm²) and flexible (1...25 mm²) conductors, ensuring secure and reliable connections with specified tightening torque.
• Compact Design: With dimensions of 82mm (Height) x 36mm (Width) x 72mm (Depth), it optimizes space within distribution boards.
• Environmental Compliance: Certified to IP20 degree of protection, compliant with RoHS 2003, and adheres to REACH regulations, demonstrating environmental responsibility.

Benefits

• Superior Shock Protection: The 30mA earth-leakage sensitivity provides critical protection against direct contact with live parts and indirect contact (faults to exposed conductive parts), significantly reducing the risk of fatal electrical shocks to individuals.
• Prevents Electrical Fires: By detecting and interrupting even small leakage currents that can lead to overheating and insulation breakdown, the Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) minimizes the risk of electrical fires, protecting property and lives.
• Enhanced Equipment Safety: Rapid fault isolation prevents continuous damaging currents from flowing through faulty appliances or wiring, thereby extending the lifespan of electrical equipment and reducing repair costs.
• Instantaneous Response: The instantaneous tripping mechanism ensures that power is cut off immediately upon detection of an earth leakage, offering maximum safety by minimizing exposure time to dangerous currents.
• Easy Verification of Functionality: The built-in test button allows users to quickly and easily verify the proper operation of the RCCB, providing assurance of continuous protection and simplifying routine maintenance checks.
• Simplified and Secure Installation: The clip-on DIN rail mounting and versatile tunnel terminals with specified tightening torques facilitate quick, robust, and reliable installation, reducing labor time and ensuring long-term connection integrity.
• Long-Term Reliability: Designed with high mechanical and electrical durability, the Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) ensures consistent, reliable performance over many years, minimizing the need for frequent replacements.
• Space Efficiency: Its compact 2-pole design allows for efficient use of space within electrical distribution boards, which is particularly valuable in installations where panel space is at a premium.
• Compliance and Peace of Mind: Conforming to international and national safety standards (SANS 767, IEC 61008-1), this RCCB offers peace of mind that your electrical installation meets stringent safety requirements.

In-Depth Technical Specifications

The Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) is a highly specialized Residual Current Circuit Breaker designed for critical safety applications in single-phase AC networks.

Ideal Use

The Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) is specifically designed for critical safety applications where the protection of human life and prevention of fire are paramount due to earth leakage currents.

• Residential Homes and Apartments: Essential for protecting all circuits supplying general-purpose socket outlets, lighting, and bathroom circuits, significantly enhancing safety against electric shock.
• Small Commercial Installations: Ideal for offices, retail shops, and other commercial premises where human safety is a primary concern, protecting sensitive electronic equipment and personnel.
• Areas with Increased Risk of Electric Shock: Highly recommended for installation in environments such as bathrooms, kitchens, laundries, and outdoor power points, where the presence of water increases the risk of electric shock.
• General Purpose Single-Phase Distribution: Used as a main incoming or sub-main protection device in distribution boards for single-phase AC networks.
• Renovation and Upgrades: A crucial component for upgrading existing electrical systems to meet modern safety standards and provide enhanced protection.
• Equipment with Potential for Leakage: Suitable for protecting circuits connected to appliances and equipment that might develop insulation faults over time, such as water heaters, ovens, and power tools.

Tips

• Mandatory Upstream Overcurrent Protection: The Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) is an earth leakage protection device and does not provide overcurrent (overload or short-circuit) protection. It is mandatory to install a suitable Miniature Circuit Breaker (MCB) upstream to protect the RCCB itself and the circuit from overloads and short circuits. The datasheet explicitly states a "Rated conditional short-circuit current" with an Easy9 MCB of 3000 A (3 kA) 63 A, indicating necessary coordination.
• Regular Testing is Crucial: Always perform the integrated test button operation periodically (e.g., monthly) as recommended by safety standards (IS 12640 Part 1). This confirms the mechanical and electrical integrity of the tripping mechanism.
  • To test: Ensure the RCCB is in the ON position and the circuit is energized. Press the test button (T). The RCCB should trip immediately (move to OFF position). If it does not trip, the device is faulty or there is no supply, and it must be replaced or inspected by a qualified electrician.
  • Important Safety Note: The test button is only for verifying the device's functionality; do not use it to switch off the RCCB for isolation purposes.
• Professional Installation: Always ensure that the installation, wiring, and commissioning of the Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) are carried out by a qualified and licensed electrician. Adherence to all local wiring regulations, national standards, and safety guidelines is paramount.
• Proper Terminal Connections: Ensure that both the live and neutral conductors are correctly connected to the device, as specified in the installation instructions. Incorrect wiring can prevent the RCCB from functioning properly. Pay close attention to the wire stripping length (16mm) and tightening torque (3.5 N.m) to ensure secure, low-resistance connections.
• Environmental Protection: While the RCCB has an IP20 rating (finger protected), it is not waterproof. Install the Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) inside a suitable enclosure (e.g., a distribution board with an IP4X or higher rating) to protect it from dust, moisture, and mechanical damage.
• Compatibility with Busbars: The device is compatible with comb busbars from the top, which can simplify wiring in multi-device installations. Ensure proper busbar selection and installation for optimal performance and safety.
• End-of-Life Disposal: As an electrical product, the Schneider Earth Leakage EZ9 2P 63A 30mA (EZ9R03263) must be disposed of responsibly. Adhere to WEEE (Waste Electrical and Electronic Equipment) directives and local recycling regulations. Do not discard it with general waste.