Miniature circuit breaker HiSmart NV821433 1P 20A Class C

Miniature circuit breaker HiSmart NV821433 single-pole 20 A with Class C characteristic, designed to protect electrical circuits from overloads and short circuits. The device fits standard 35 mm DIN-rail panels and provides switching and protection for lighting, socket circuits and small motors in residential, commercial and light industrial installations.

Advantages

The breaker offers overload and short-circuit protection, a contact position indicator (red = closed, green = open), and an anti-mistake contact terminal block. The housing is flame-retardant and resistant to high temperature and impact. It supports top and bottom connections and accepts both cable and pin-type busbar terminations.

Suitable for

• Lighting circuits
• Socket outlets and general power circuits
• Small motors and auxiliary equipment
• Residential, commercial and light industrial distribution boards

Key specifications

• Poles: 1P
• Rated current: 20 A
• Tripping characteristic: Class C
• Rated voltage: AC 230/400 V
• Insulation voltage (Ui): 500 V
• Rated frequency: 50/60 Hz
• Rated breaking capacity (Icu): 6000 A
• Rated impulse withstand voltage (Uimp): 6000 V
• Mechanical life: 20000 operations
• Electrical life: 8000 operations
• Safety class: IP20
• Terminal connection type: cable / pin-type busbar
• Wire / busbar cross-sectional area: up to 25 mm² / 18-3 AWG
• Connection: top and bottom
• Installation: DIN rail EN 60715 (35 mm) with fast clip
• Operating temperature: -5°C to +40°C (daily average <35°C)
• Storage temperature: -25°C to +70°C
• Dimensions: 85.5 x 78.8 x 18 mm
• Standards: IEC 60898-1 / EN 60898-1
• Rated breaking capacity: 6 kA

How to use

Mount the HiSmart NV821433 on a 35 mm DIN rail using the built-in fast clip. Connect conductors or a pin-type busbar to the top and bottom terminals, observing the recommended cross-sectional areas and tightening torques specified by your installation rules. Use the breaker to switch and protect the intended circuit; the contact position indicator shows whether the device is on (red) or off (green). Perform wiring and commissioning according to local electrical codes and safety standards.

Recommendations

Install, commission and maintain this circuit breaker only by a qualified electrician. Verify that the selected 20 A, Class C characteristic is suitable for the protected load and coordinate with upstream and downstream protective devices. Do not expose the device to conditions outside the specified temperature range and IP20 environment.