Eaton Bussmann NH 500 V Fuses – High-Performance Low-Voltage Protection up to 1250 A

1. Overview – Reliable Protection for 500 V Low-Voltage Applications

Eaton Bussmann NH 500 V fuses provide dependable short-circuit and overload protection in industrial and commercial power distribution systems.
Designed for use in switchboards, control panels, and motor or transformer protection circuits, these fuses combine high breaking capacity with proven Bussmann reliability.

The range covers rated currents from 2 A to 1250 A and is available in gG and aM utilization categories.
With a rated voltage of 500 V AC and breaking capacities up to 120 kA, the Bussmann NH 500 V series ensures maximum system safety and uptime.

Eaton Bussmann NH 500 V fuses deliver trusted protection for modern industrial and infrastructure applications.

2. Technical Features & Key Benefits

Electrical Ratings

• Rated voltage: 500 V AC

• Rated current: 2 A – 1250 A

• Breaking capacity: up to 120 kA

• Utilization categories: gG / aM

Design & Safety Features

• Dual indicator system – quick visual identification of blown fuses

• Silver-plated contact blades – low resistance and minimal power loss

• Optional insulated metal gripping lugs (IMGL) – enhanced touch safety during maintenance

• Energy-efficient design – reduced heat dissipation and long service life

• Fully compatible with DIN 43620 NH fuse bases

Standards & Approvals

• IEC 60269-1 / -2

• VDE 0636-2

• DIN 43620

3. Typical Applications

Eaton Bussmann NH 500 V fuses are ideal for:

• Industrial and building power distribution systems

• Motor and transformer protection (aM type)

• Control panels and switchgear assemblies

• Backup protection for circuit breakers and contactors

• UPS, generator, and photovoltaic (PV) installations up to 500 V

Their robust construction ensures reliable operation in demanding environments and excellent short-circuit performance under high inrush conditions.

4. Advantages of Eaton Bussmann NH 500 V Fuses

• Extended voltage capability: 500 V AC for versatile low-voltage networks

• Wide current range: 2 A – 1250 A

• High breaking capacity: up to 120 kA for superior safety margins

• Durable contact surfaces: ensure stable performance and minimal maintenance

• Compact, retrofittable design: fits all standard NH fuse holders

• Proven Bussmann quality: decades of experience in fuse protection technology

5. Eaton Bussmann NH 500 V Fuse Range Overview

All versions are optionally available with insulated gripping lugs (IMGL) or indicator systems with microswitch for remote signaling.

6. Why Choose Casadaa Distribution

• Stock of Eaton Bussmann NH 500 V fuses in all sizes and ratings

• Fast shipping across Europe

• Expert technical support for selection, replacement, and coordination studies

• Genuine Eaton accessories – fuse bases, handles, covers, and microswitch indicators

• Direct replacement options for legacy NH fuse types

Casadaa Distribution is your reliable supplier for Eaton Bussmann NH fuses and low-voltage protection solutions.

7. Frequently Asked Questions (FAQ)

Q: What are NH 500 V fuses used for?
A: They protect cables, motors, and electrical equipment in low-voltage systems up to 500 V AC.

Q: How do NH 500 V fuses differ from NH 400 V types?
A: NH 500 V fuses have higher voltage ratings and are suitable for more demanding industrial systems.

Q: Can NH 500 V fuses be used in 400 V systems?
A: Yes – they are backward-compatible and can safely operate in 400 V networks, depending on coordination.

Q: Are indicator or microswitch versions available?
A: Yes – all 500 V fuses are available with visible indicators or remote-signaling microswitch options.