Fuse cartridge Eti-Polam BiWtz 63A DIII gG 500V (MPN 002313403)

Eti-Polam BiWtz 63A DIII gG 500V fuse cartridge is a time-delay, general-purpose fuse designed for protection of electrical circuits in industrial and commercial installations. With a nominal current rating of 63 A and a rated voltage of 500 V, this DIII-size cartridge combines delayed overload tolerance with fast response to short circuits, making it suitable for feeder protection, motor circuits with moderate inrush, and general distribution applications when installed in compatible DIII fuse holders or switchgear.

Advantages

The fuse cartridge provides selective overcurrent protection thanks to its gG characteristic, which covers both overload and short-circuit interruptions. Its time-delay behaviour reduces nuisance blowing from temporary inrush currents while still offering reliable fault clearing. The compact DIII format allows straightforward replacement in systems using standard DIII fuse holders and switchgear, and the construction meets common industrial requirements for mechanical stability and electrical performance.

Suitable for

• Protection of distribution feeders and branch circuits rated up to 63 A
• Motor circuits with moderate starting inrush where time-delay is beneficial
• Industrial and commercial switchgear and fuse holders designed for DIII cartridges
• General-purpose overcurrent protection in three-phase and single-phase installations within voltage limits

When it may not be suitable

This fuse cartridge is not appropriate where protection requires fast-acting (aM or aR) fuses for selective protection of semiconductor devices or where extremely high short-circuit breaking capacity beyond the product’s rating is needed. It is also unsuitable for systems that use a different physical fuse format or where electronic motor protection with adjustable trip characteristics is required.

Key specifications

• Nominal current: 63 A
• Time characteristic: time-delay (DIII size)
• Utilization category: gG (general purpose)
• Rated voltage: 500 V
• Intended mounting: DIII fuse holders and compatible switchgear

How to use

Install the fuse cartridge in a compatible DIII fuse holder or switchgear compartment that is de-energized and verified safe according to local electrical safety rules. Ensure tight, clean contact surfaces and correct holder orientation. Replace blown fuses only with cartridges of the same nominal current, time characteristic, and voltage rating to maintain protection selectivity and safety. After replacement, restore power and verify proper operation of the protected circuit.

What to consider before purchase

• Confirm the DIII physical format of the fuse holder or switchgear in your installation
• Verify that 63 A nominal current and 500 V rated voltage match the circuit requirements
• Ensure a gG (general-purpose) time-delay characteristic is suitable for connected equipment
• Check coordination with upstream and downstream protective devices for selectivity

Usage recommendations

Use this Eti-Polam BiWtz 63A DIII gG 500V fuse cartridge where standard time-delay general-purpose protection is required. Pair with correctly rated holders and follow local wiring and safety standards; coordinate protection settings when used with motor starters or downstream protective devices to ensure reliable operation and system selectivity.