Overview
The Bussmann NON-70 is a Class H, one-time general-purpose fuse engineered for basic electrical protection in commercial and industrial circuits. Rated at 70 amperes with a 10 kA interrupting capability, the NON-70 delivers dependable overcurrent protection for applications where temporary surges are not expected and short-circuit currents remain relatively low.
Key Features
- 70A current rating with dual voltage support (250 VAC / 125 VDC)
- Class H general-purpose, non-current-limiting design
- 10 kA interrupting rating at both 250 VAC and 125 VDC
- One-time fuse—operates once and must be replaced
- Cartridge form factor with stud mounting compatibility
- Ideal for lighting, heating, and standard power circuits
Technical Specifications
- Ampere Rating: 70 A
- Voltage Rating: 250 VAC / 125 VDC
- Interrupting Rating: 10 kA
- Fuse Class: Class H (K5)
- Fuse Type: One-Time (Non-Renewable)
- Fuse Shape: Cartridge with Stud Mounting
- Speed: Medium / Normal Blow
- Configuration: Non-Current-Limiting
- UPC: 051712101653
Typical Applications
The Bussmann NON-70 protects circuits in:
- Lighting circuits in commercial buildings
- HVAC heating systems
- Motor control panels with moderate inrush currents
- Industrial machinery feeder circuits
- Power distribution cabinets and switchboards
- Legacy electrical systems requiring Class H cartridge fuses
Compatibility & Replacements
Compatible With
- Standard cartridge fuse holders (stud-mount design)
- Industrial control panels rated for Class H fuses
- Motor control centers (MCCs)
- Distribution boards with NON-series fuse slots
- Systems rated for 250 VAC / 125 VDC operation
Replaces / Drop-In Replacement For
- Cooper Bussmann NON-70
- Eaton NON-70
- Legacy 70A Class H cartridge fuses
Works With
- Standard industrial fuse blocks rated for Class H
- Stud-mount cartridge fuse holders
- 250 VAC / 125 VDC electrical systems
- Modular fuse block assemblies (0–400A capacity)
