Fuse cartridge (slow-blow) Eti-Polam KOMBI NH1C 160A 500V industrial

Eti-Polam KOMBI NH1C 160A 500V slow-blow fuse cartridge is an industrial NH-size protective element designed to secure electrical circuits against overloads and short circuits while allowing short-duration inrush currents. The fuse combines a time-lag characteristic with a compact cylindrical NH body suitable for installation in switchgear, distribution boards and industrial equipment that require robust overcurrent protection at up to 500 V.

Advantages

The slow-blow (time-delay) characteristic reduces nuisance blowing during motor starts or transformer inrush, providing selective and reliable protection. Its NH-size construction ensures standardized mounting and easy replacement in NH fuse holders and bases. The design meets industrial requirements for current interruption and thermal endurance, allowing consistent performance in demanding electrical environments.

Suitable for

• Protection of motor circuits and equipment with high inrush currents
• Switchgear and distribution boards in industrial facilities
• Transformers and power distribution feeders requiring time-lag fuses
• Applications where NH-size fuses are standard for maintenance and replacement

When it may not be suitable

This slow-blow fuse is not appropriate when instantaneous fault clearing is required or when protection coordination demands fast-acting fuses for sensitive electronic loads. It may also be unsuitable for circuits with rated voltages above 500 V or where a different physical fuse size or type (e.g., cartridge with different dimensions or fast-acting characteristic) is specified by the equipment manufacturer.

Key specifications

• Rated current: 160 A
• Rated voltage: 500 V
• Time characteristic: slow-blow (time-delay)
• Form factor: NH-size cartridge suitable for NH fuse holders
• Intended use: industrial overcurrent protection

How to use

Install the fuse cartridge into a compatible NH fuse holder or fuse switch with the power disconnected and verified safe. Ensure correct orientation and full seating of the cartridge in the holder, then restore power and verify correct operation of the protected circuit. Replace blown fuses only with the same rated current and time characteristic to maintain protection coordination. Follow applicable electrical standards and local safety regulations during installation and maintenance.

What to consider before purchase

• Confirm that the circuit nominal voltage does not exceed 500 V
• Verify that NH-size cartridges fit the intended fuse holder or switchgear
• Ensure slow-blow characteristic is appropriate for the protected equipment
• Check coordination with upstream and downstream protective devices

Usage recommendations

Use this Eti-Polam KOMBI NH1C 160A slow-blow fuse in installations where controlled delay for inrush currents is needed, and always match replacement fuses to the original rated current, voltage and time characteristic to maintain safe and coordinated protection.