Fuse insert Eti‑Polam BiWts 63 A DIII gF 500 V (model 002313103)

Eti‑Polam BiWts 63 A DIII gF 500 V fuse insert is a low-voltage protective element designed for overcurrent and short‑circuit protection in distribution panels and switchgear. The fuse insert fits DIII fuse holders and delivers a full-range gG/gF characteristic suitable for protecting cables and lines up to 63 A at a nominal voltage of 500 V. The product is intended for industrial, commercial and service cabinet installations where reliable interruption of fault currents and selective protection are required.

Advantages

The fuse insert provides consistent thermal and short‑circuit protection with a clear gF time-current characteristic for both overload and fault conditions. Its construction ensures stable electrical contact and predictable melting behavior under fault current, supporting system selectivity and ease of maintenance. The design is compatible with standard DIII holders used in low-voltage distribution, allowing straightforward replacement during service. The component's ratings make it suitable for systems where coordination between protective devices and reliable cable protection is necessary.

Suitable for

• Protection of power distribution lines and branch circuits in switchboards and panels
• Overcurrent and short‑circuit protection for cables and conductors in industrial installations
• Use in commercial electrical cabinets and service distribution boards
• Replacement in systems requiring full-range gG/gF characteristic fusing for coordination with downstream protection

Key specifications

• Rated current: 63 A
• Rated voltage: 500 V (nominal, low-voltage distribution)
• Type / characteristic: DIII gF (full-range gG/gF behaviour for cable and line protection)
• Application: overcurrent and short‑circuit protection in panel and switchgear
• Mounting interface: DIII fuse holder compatible

How to use

Install the fuse insert into a compatible DIII fuse holder following the equipment manufacturer's safety procedures and ensuring the supply is de‑energized before replacement. Verify the system voltage and required rated current match the fuse insert's specifications. After insertion, check for proper seating and secure contacts; when commissioning, confirm coordination with upstream and downstream protection devices. Replace only with identical type and rating to maintain protection characteristics and system selectivity.

Usage recommendations

For reliable operation, select the fuse rating based on cable ampacity and upstream device coordination studies. Use the fuse insert in panels and switchgear rated for 500 V and ensure regular inspection of contacts and holder condition during maintenance intervals. Replace any fuse insert that shows signs of overheating, corrosion, or mechanical damage.