Bussmann NOS-20 One-Time Fuse

Overview

The Bussmann NOS-20 One-Time Fuse is an industry-standard cartridge fuse designed for reliable overcurrent protection in electrical circuits. Part of Eaton’s Bussmann series, this fuse safeguards equipment by interrupting excessive current flow during short circuits or overloads. Its “one-time” operation ensures fail-safe performance—once activated, it must be replaced to restore circuit functionality.

Key Features

• Amperage Rating: 20A (optimized for medium-load protection)
• Voltage Rating: 250V AC/DC (versatile for residential and industrial applications)
• Fast-Acting Response: Rapidly interrupts fault currents to minimize damage
• High Interrupting Capacity: Robust construction handles up to 10kA fault currents
• Durable Construction: Ceramic body with precision-engineered fusible element for consistent performance
• Safety Compliance: Meets UL/CSA standards for reliability

Applications

Ideal for:

• HVAC systems
• Industrial control panels
• Power supplies and transformers
• Motor protection circuits
• Electrical distribution boards

Specifications

• Type: Cartridge fuse (non-renewable)
• Dimensions: 1″ × 0.25″ (standard 1AG size)
• Terminals: Ferrule caps for secure contact
• Operating Temperature: -40°C to 125°C (-40°F to 257°F)

🔧 Installation Note: Always de-energize circuits before replacement. Verify compatibility with existing fuse holders (1AG size).

Trust the Bussmann NOS-20 for critical circuit protection—where safety, precision, and durability are paramount.

*(Note: Ratings based on industry-standard NOS fuses; confirm exact specs with manufacturer datasheets for mission-critical use.)*