Residual Current Breaker HiSmart NV821969 63A 30mA

Residual Current Breaker HiSmart NV821969 is a four-pole RCBO providing combined overcurrent and earth-leakage protection. Rated for 63 A with a 30 mA residual current sensitivity, the device disconnects the circuit when leakage or short-circuit conditions occur. Designed for DIN-rail installation, it meets IEC 61009-1 / EN 61009-1 standards and is intended for residential and light commercial electrical installations.

Advantages

The RCBO offers integrated overcurrent and residual-current protection in a single device, reducing the number of components required in a distribution board. It features an anti-mistake contact terminal block, clear contact position indication (red = closed, green = open), and a flame-retardant housing with high temperature and impact resistance. The breaker has a rated short-circuit capacity of 6 kA and supports cable or pin-type busbar connections up to 35 mm².

Suitable for

• Residential electrical distribution boards
• Light commercial installations
• Protection of individual circuits and appliances against earth leakage and overload
• DIN-rail mounted switchgear assemblies

Key specifications

• Type: RCBO, 4 poles
• Rated current (In): 63 A
• Tripping class: C
• Residual sensitivity: 30 mA
• Rated voltage (Ue): AC 230 V
• Rated short-circuit capacity (Icn): 6000 A
• Rated impulse withstand voltage (Uimp): 4000 V
• Insulation voltage (Ui): 500 V
• Breaking time: <= 0.1 s
• Frequency: 50/60 Hz
• Mechanical life: 10,000 cycles; Electrical life: 4,000 cycles
• Protection class: IP20
• Connection type: cable or pin-type busbar, top connection; conductor cross-section up to 35 mm²
• Mounting: DIN rail EN 60715 (35 mm)
• Operating temperature: -25 °C to +70 °C
• Dimensions: 82 x 72 x 78 mm
• Standards: IEC 61009-1 / EN 61009-1
• Brand / MPN / EAN: HiSmart / NV821969 / 6942034324162

How to use

Mount the HiSmart NV821969 on a 35 mm DIN rail and make electrical connections from the top using appropriate cables or a compatible pin-type busbar, observing the maximum conductor cross-section of 35 mm². Ensure correct polarity and tighten terminals to the manufacturer’s torque specification. After wiring, switch the breaker to the ON position and test the device according to local regulations to confirm correct operation of the residual current trip function.

Recommendations

Install and commission this RCBO only by a qualified electrician. Regularly test the residual-current function according to applicable standards and local rules, and replace the device if mechanical or electrical wear is detected.