TBC TAR-440L Automatic Recloser RCCB

Reclosing Mechanism Technology: The TAR-440L features an advanced automatic reclosing mechanism operating at 220/240V AC, 50Hz. The REC unit consumes 30VA and provides toggle control for easy operation. The reclosing sequence is intelligently programmed with six attempts using progressive delays: 10 seconds, 20 seconds, 30 seconds, 60 seconds, 120 seconds, and finally 600 seconds. This progressive delay strategy allows transient faults to clear while preventing rapid cycling that could damage equipment or create safety hazards.

RCCB Protection: The electromechanical RCCB core provides reliable earth leakage protection with a rated residual current of 300mA (0.3A). The device is designed to not trip at 0.5 × I∆n, ensuring stability during normal operation while providing fast response to genuine earth leakage conditions. With a rated breaking capacity of 500A and rated limited short-circuit current of 6kA, the TAR-440L offers robust protection even under fault conditions.

Auxiliary Contacts: The integrated auxiliary contacts (1 NO + 1 NC) are dry contacts rated for maximum 250V / 2A, enabling integration with building management systems, alarm systems, or remote monitoring equipment. These contacts provide real-time status indication of the RCCB state.

Mechanical Design: The device features DIN rail mounting for standard installation in distribution boards. With IP20 degree of protection and electrical durability rated for 5,000 cycles, the TAR-440L is built for long-term reliability. The padlockable design allows for lockout/tagout procedures during maintenance.

Environmental Performance: Operating reliably across a temperature range of -35°C to +70°C and humidity levels up to 93%, the TAR-440L is suitable for both indoor and outdoor installations in various climatic conditions.

• Residential Distribution Boards: Protect homes from earth leakage while automatically restoring power after temporary faults, reducing inconvenience to occupants
• Commercial Buildings: Maintain business continuity in offices, retail spaces, and service facilities where power interruptions impact operations
• Pump Systems: Ideal for water pumps, irrigation systems, and sewage pumps where automatic restart is essential and manual access may be difficult
• Outdoor Installations: Perfect for outdoor electrical equipment subject to moisture and transient leakage conditions
• Remote Installations: Unmanned facilities, telecommunications sites, and remote monitoring stations where manual intervention is impractical
• Agricultural Applications: Farm equipment, livestock facilities, and irrigation systems requiring continuous operation
• Industrial Facilities: Light industrial applications where temporary earth leakage may occur due to environmental conditions
• Critical Infrastructure: Sites requiring high power availability while maintaining safety standards
• Refrigeration Systems: Cold storage and refrigeration equipment where power interruption can result in product loss
• Security Systems: Installations where continuous power to security equipment is essential