• The Swan Electric SE3*63 SAMITE series is a range of automatically operated electrical circuit breakers designed to provide robust protection for three-phase electrical circuits against damage from excess current due to overloads or short circuits.
• This description focuses on the 3-Pole (3P) versions, available in current ratings from 5A to 63A, suitable for 415V AC three-phase applications.
• These circuit breakers ensure interruption of current flow across all three poles simultaneously once a fault is detected, conforming to the IEC 60947-2 standard.
• Their key differentiator lies in reliable three-pole protection, a comprehensive range of current ratings, and easy DIN rail installation, making them ideal for various industrial and commercial three-phase power systems.
• Part numbers for the 3-Pole versions typically follow the format SE33xx (e.g., SE3305 for 3P 5A, SE3363 for 3P 63A).

Features

• Standards Compliant: Conforms to SANS556-1 and IEC60947-2.
• 3-Pole Configuration: Specifically designed for three-phase circuit protection, interrupting all three live conductors.
• Wide Current Range: Available in rated currents of 5A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A.
• Rated Voltage: 415V AC for 3P configurations.
• Breaking Capacity: 3kA rated breaking capacity (Icu).
• Long Lifespan: Electrical life expectancy of 4,000 operations and mechanical life expectancy of 10,000 operations.
• Protection Degree: IP20 protection.
• Temperature Resilience: Operates in ambient temperatures from -30°C to +60°C (daily average ≤35°C), with optimal performance at 30°C.
• Versatile Connection: Supports Cable/Pin-type busbar connections, with top and bottom terminal options.
• Easy Installation: Designed for MINI DIN Rail mounting via a fast clip device.
• Secure Terminals: Maximum tightening torque of 2.5Nm.

Benefits

• Total Three-Phase Protection: Reliably protects three-phase circuits and equipment by interrupting all three poles in the event of overcurrents or short circuits, essential for balanced system protection and safety.
• Compliance Assurance: Meets international safety and performance standards, ensuring quality and reliability for demanding applications.
• Application Flexibility: Suitable for a wide array of three-phase applications due to the extensive range of current ratings and 415V capability.
• Durable Performance: Offers a long operational life, reducing the need for frequent replacements and maintenance in critical systems.
• User Protection: IP20 rating provides protection against solid objects larger than 12.5mm, like fingers, enhancing safety during handling and operation (when installed in an enclosure).
• Reliable in Various Environments: Wide operating temperature range allows for installation in diverse industrial and commercial conditions.
• Simplified Installation: Fast clip DIN rail mounting saves time and effort during setup in electrical panels and distribution boards.
• Secure and Reliable Connections: Ensures stable electrical connections on all three poles, minimizing resistance and potential overheating.

In-Depth Technical Specifications

Temperature Derating Compensation (Current in Amperes)

(Note: South Africa is calibrated at 40°C. Values below show permissible current at different ambient temperatures.)

(Note: 5A derating values are not explicitly provided but would follow a similar derating pattern.)

Ideal Use

• Industrial three-phase machinery and motor protection.
• Commercial building main distribution boards for three-phase loads.
• Protection of HVAC systems, pumps, and other three-phase equipment.
• Three-phase sub-distribution panels in factories and workshops.
• Any 3-pole AC circuit operating at up to 415V, 50/60Hz requiring up to 3kA breaking capacity.

Tips

• Installation: Ensure the circuit breaker is mounted securely on a MINI DIN Rail. The fast clip device allows for tool-free mounting and removal.
• Wiring: Use appropriate cable sizes for the rated current for all three poles. Ensure phase sequence and connections are made correctly to the top and bottom terminals of each pole.
• Torque: Tighten terminal screws to the recommended maximum torque of 2.5Nm to ensure a secure and low-resistance connection across all phases. Do not over-tighten.
• Ambient Temperature: Consider the ambient temperature of the installation environment. If operating consistently outside the 30°C optimal temperature, refer to the temperature derating table to select the appropriate current rating for balanced load protection.
• Testing: Periodically test the trip mechanism if local regulations or site-specific safety protocols require or recommend it, though these devices are designed for long-term maintenance-free operation.
• Compatibility: Designed for use with cable or pin-type busbars, offering flexibility in panel wiring for three-phase configurations.