Miniature Circuit Breaker HiSmart NV821662 2-pole 63A 500V DC

HiSmart NV821662 is a two-pole DC miniature circuit breaker rated for 63 A and up to 500 V DC. The compact, modular device is intended for protection and isolation of direct-current circuits in photovoltaic, battery storage, industrial, commercial and communication systems. It provides thermomagnetic overload and short-circuit protection and is designed for DIN-rail (35 mm) mounting with a clear contact position indicator.

Advantages

The breaker supports a rated voltage of 500 V DC and a nominal current of 63 A, with an ultimate breaking capacity of 6 kA. Modular construction simplifies installation on a standard DIN rail and the contact position indicator shows closed (red) and open (green) states. It meets IEC/EN 60947-2 standards and EU RoHS requirements, features thermomagnetic tripping, and offers compact dimensions suitable for space-constrained panels.

Suitable for

• Photovoltaic (PV) arrays and solar installations
• Battery storage systems and DC microgrids
• Industrial DC power distribution
• Commercial and communication DC circuits

Key specifications

• Number of poles: 2
• Nominal current (In): 63 A
• Class: A (thermomagnetic)
• Rated voltage (Ue): DC 500 V
• Insulation voltage (Ui): 1200 V
• Ultimate breaking capacity (Icu): 6000 A
• Rated impulse withstand voltage (Uimp): 4000 V
• Mechanical life: 20,000 operations
• Electrical life: 1,500 operations
• Safety class: IP20
• Wire cross-section area: 2.5–25 mm²
• Mounting: DIN rail 35 mm
• Operating temperature: -35 °C to +70 °C
• Storage temperature: -40 °C to +85 °C
• Dimensions: 71.2 × 82 × 36 mm
• Standards: IEC 60947-2 / EN 60947-2

How to use

Mount the HiSmart NV821662 on a 35 mm DIN rail and connect supply and load conductors within the specified wire cross-section range (2.5–25 mm²). Ensure correct polarity for DC circuits and secure terminals to the recommended torque. Use the contact position indicator to verify the breaker state: red for closed, green for open. The device provides thermomagnetic tripping for overload and short-circuit protection; after a trip, identify and clear the fault before resetting the breaker.

Recommendations

Install and commission this DC breaker in accordance with local electrical codes and IEC/EN 60947-2. Verify system voltage does not exceed DC 500 V and confirm conductor sizing and torque values with installation guidelines. Allow adequate ventilation around the device and perform periodic inspections for secure connections and correct operation. Warranty: 24 months.