TBC TAR-240M Automatic Recloser RCCB
TAR-240M
The TBC TAR-240M is an advanced Automatic Recloser Residual Current Circuit Breaker (RCCB) designed to provide reliable protection against earth leakage faults while automatically restoring power after temporary faults. This innovative device combines residual current protection with intelligent automatic reclosing functionality, ensuring both safety and continuity of power supply in critical applications.
Key Features
- Integrated RCCB and Auto Recloser in single unit
- Automatic reclosing after nuisance tripping for uninterrupted power
- Up to 6 reclosing attempts with intelligent sequencing
- Adjustable reclosing time sequence: 10s → 20s → 30s → 60s → 120s → 600s
- Prevents prolonged power interruption in critical applications
- Manual reset required after final lock-out for enhanced safety
- Auxiliary contact (1NO + 1NC) for remote monitoring
- 40A rated current with 100mA residual current sensitivity
- 6kA breaking capacity for reliable fault protection
- DIN rail mounting (35mm) for easy installation
- SIRIM approved and complies with IEC 61008-1 / MS IEC 61008-1 standards
- Wide operating temperature range: -35°C to +70°C
The TBC TAR-240M Automatic Recloser RCCB represents a significant advancement in electrical protection technology, combining two essential functions in a single compact device. This intelligent circuit breaker not only protects against dangerous earth leakage currents but also automatically attempts to restore power after temporary faults, minimizing downtime and improving system reliability.
Designed for residential, commercial, and light industrial applications where continuous power supply is critical, the TAR-240M features an intelligent reclosing algorithm that makes up to 6 attempts to restore power with progressively longer intervals. This approach ensures that temporary faults are quickly cleared while persistent faults result in a safe lock-out condition requiring manual intervention.
The device's 1P+N configuration with 40A rated current and 100mA residual current sensitivity makes it ideal for protecting circuits against earth leakage while the automatic reclosing function is particularly valuable in applications such as water pumps, telecom equipment, and remote installations where manual intervention may be delayed.
With SIRIM approval and full compliance with international IEC standards, the TAR-240M delivers peace of mind through proven safety and reliability. The inclusion of auxiliary contacts enables integration with building management systems for remote monitoring and control.
Operating Principle:
The TBC TAR-240M operates through an intelligent four-stage process designed to maximize safety while minimizing unnecessary power interruptions:
- Fault Detection: The RCCB continuously monitors for earth leakage currents. When residual current exceeds the 100mA threshold, the device trips immediately to protect against electric shock and fire hazards.
- Automatic Reclosing: After the initial trip, the auto recloser unit initiates a reclosing sequence after a preset delay (0.4s to 1.0s closing time), attempting to restore power automatically.
- Sequential Attempts: If the fault persists, the device makes up to 6 reclosing attempts with progressively longer intervals (10s, 20s, 30s, 60s, 120s, and 600s). This intelligent sequencing allows temporary faults to clear while preventing repeated exposure to persistent faults.
- Lock-out Protection: After the final unsuccessful reclosing attempt, the device enters lock-out mode, requiring manual reset. This critical safety feature prevents repeated unsafe reclosing that could lead to fire risk or equipment damage.
Protection Characteristics:
The device provides Type AC residual current protection, suitable for detecting sinusoidal alternating residual currents. With a breaking capacity of 6kA, it offers robust protection for typical residential and commercial installations. The IP20 protection degree ensures safe operation in standard indoor electrical enclosures.
Installation and Mounting:
The TAR-240M is designed for standard DIN rail (35mm) mounting, facilitating easy installation in distribution boards. The compact 2-module width (93mm) allows efficient use of panel space. The device operates reliably across a wide temperature range from -35°C to +70°C, making it suitable for various environmental conditions.
- Residential Distribution Boards: Protecting household circuits with automatic power restoration after temporary faults
- Commercial Buildings: Ensuring continuous operation of critical circuits in offices, retail spaces, and public facilities
- Water Pumps & Booster Systems: Maintaining water supply by automatically restarting after nuisance trips
- Telecom & Utility Panels: Protecting communication equipment while minimizing service interruptions
- Remote Installations: Sites requiring automatic power recovery where manual intervention is delayed or difficult
- Agricultural Applications: Protecting irrigation systems, livestock facilities, and farm equipment
- HVAC Systems: Ensuring continuous operation of heating, ventilation, and air conditioning equipment
- Refrigeration Units: Preventing product loss by automatically restoring power to cold storage systems
- Security Systems: Maintaining power to surveillance and access control equipment
- Street Lighting: Automatic restoration of outdoor lighting after temporary faults
| RCCB (Residual Current Protection) | |
|---|---|
| Rated Current (In) | 40A |
| Rated Voltage (Un) | 230 / 240V AC |
| Frequency | 50 / 60Hz |
| Rated Residual Current (IΔn) | 100mA |
| Breaking Capacity (Inc / IΔc) | 6kA |
| Poles | 1P + N |
| Standard | IEC 61008-1 |
| Auto Recloser Unit | |
|---|---|
| Rated Voltage | 220 / 240V AC |
| Rated Power | 30VA |
| Closing Time | 0.4s – 1.0s |
| Reclosing Attempts | Max. 6 times |
| Reclosing Time Sequence | 10s → 20s → 30s → 60s → 120s → 600s |
| Lock-out Mode | Manual reset required |
| Auxiliary Contact | 1NO + 1NC (Dry Contact) |
| Mechanical Specifications | |
|---|---|
| Mounting | DIN Rail (35mm) |
| Protection Degree | IP20 |
| Operating Temperature | -35°C to +70°C |
| Height | 82 mm |
| Width | 93 mm |
| Depth | 76 mm |
| Standards & Compliance | |
|---|---|
| Certification | SIRIM Approved |
| Compliance Standards | IEC 61008-1, MS IEC 61008-1 |
