TOMZN RCBO Residual Current Circuit breaker with over current and Leakage protection in Bangladesh
The TOMZN TOB1L-63H RCBO is a 2-pole (2P) residual current circuit breaker with over-current protection (MCB function) and leakage protection (RCD function). It’s designed to protect both line (L) and neutral (N) wires in residential and industrial electrical installations.
🔧 Key Specifications:
| Specification | Description |
|---|---|
| Model | TOB1L-63H |
| Brand | TOMZN |
| Poles | 2P (Phase + Neutral) |
| Rated Current (In) | 63A |
| Rated Voltage (Ue) | 230V AC |
| Frequency | 50Hz / 60Hz |
| Residual Operating Current | 30mA (typical, adjustable in some models) |
| Breaking Capacity | 6kA |
| Tripping Characteristic | Type C (standard usage, handles moderate inrush currents) |
| Protection | Overcurrent, Short Circuit, Earth Leakage |
| Mounting | DIN Rail 35mm (standard) |
| Cut-off | Cuts both L (Live) and N (Neutral) during fault condition |
| Application | Residential, commercial, and light industrial usage |
⚙️ Features:
- ✅ RCBO (Residual Current Breaker with Over-current): Combines the functionality of MCB + RCD in one compact unit.
- ✅ Double-pole Cut-off (L+N): Enhances safety by disconnecting both lines during faults.
- ✅ Quick Trip Response: Responds rapidly to ground fault or overload.
- ✅ Compact DIN rail design: Easy installation inside distribution boards.
- ✅ Fire and shock protection: Provides added protection against electrical fires and electrocution.
- ✅ High sensitivity: Can detect leakage as low as 30mA.
🏠 Use Case Scenarios:
- Household electrical circuit protection
- Air conditioner or geyser line protection
- Solar inverter AC output protection
- Small office distribution board
- Shops and light commercial spaces
⚠️ Important Note:
- Always install RCBOs with correct wiring and grounding.
- Make sure the selected current rating suits your load.
- It is recommended to install by a qualified electrician.
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