The TOMZN TOB1L-63HD is a compact DIN-rail RCBO that combines short‑circuit, overload, earth‑leakage, and surge protection in one unit. Designed for 230 V~ residential and light commercial systems, it offers a C‑curve trip characteristic, 30 mA sensitivity with ≤0.1 s tripping time, and a 6 kA breaking capacity. The built‑in Type III SPD guards against transient overvoltages. User‑friendly controls include a blue toggle handle, orange test button, blue reset button, and red/green LED status indicators. The flame‑retardant housing meets IEC 61009‑1 and GB/T standards, with CE marking.

Product parameters

Brand: TOMZN
Model: TOB1L-63HD
Product type: RCBO (Residual Current Circuit Breaker with Overcurrent protection)
Protection functions: Short‑circuit, Overload, Earth leakage, Lightning/Surge
Rated current (In): 16A / 20A / 25A / 32A / 40A / 50A / 63A
Tripping curve: C
Rated voltage (Ue): 230V~ (single‑phase AC)
Rated frequency: 50/60 Hz
Rated residual operating current (IΔn): 30 mA
Tripping time: ≤ 0.1 s
Rated short‑circuit breaking capacity (Icn): 6000 A
Surge/lightning protection: Built‑in SPD (Type III)
Number of poles: 1P+N
Mounting type: DIN rail (35 mm)
Operating handle: Toggle, blue, ON/OFF position
Test function: Yes (orange test button)
Reset function: Yes (blue reset button)
Status indicators: Power LED (red), Ground LED (green)
Terminal type: Screw clamp, top and bottom
Wiring connection: 4 terminals (Line In, Neutral In, Load Out, Neutral Out)
Housing material: Flame‑retardant thermoplastic
Applicable standards: IEC 61009‑1, GB/T 16917.1, GB/T 16917.22
Certification: CE
Operating temperature: ‑5 °C to +40 °C
Storage temperature: ‑25 °C to +70 °C
Altitude: ≤ 2000 m
Typical applications: Residential distribution boards, light commercial panels, building site temporary power