Bussmann 170M3669 – Fuse 400A 690V 1*Fke/78 Ar Uc

Overview

The Bussmann 170M3669 is a high-performance industrial fuse designed for demanding electrical protection applications. Engineered for reliability and safety, this 400-amp fuse features a robust voltage rating of 690V AC and complies with international standards for circuit protection in commercial, industrial, and utility environments.

Key Specifications

• Rated Current: 400A
• Rated Voltage: 690V AC
• Fuse Type: 1*Fke/78 (Industry-standard DIN-type fuse system)
• Breaking Capacity (Uc): Certified for safe interruption of high fault currents
• Construction: Precision-engineered with sand-filled ceramic body for superior arc quenching
• Terminal Type: Blade-style contacts for secure mounting
• Approvals: Meets IEC 60269 standards

Applications

Ideal for protecting:

• Industrial motor circuits
• Transformer and capacitor banks
• Power distribution panels
• Heavy machinery and HVAC systems
• Renewable energy installations

Benefits

• Safety Assurance: Prevents equipment damage and electrical hazards by interrupting overloads and short circuits
• Durability: Ceramic construction resists thermal stress and mechanical impact
• Efficiency: Minimal power loss during normal operation
• Compatibility: Designed for DIN rail mounting in standard fuse holders

Environmental & Compliance

• Operating Temperature: -50°C to +125°C
• RoHS compliant
• UL-recognized component (verify local certifications)

Ordering Information

Manufacturer Part No.: 170M3669
Series: BUSSMANN by Eaton

Note: Always consult technical datasheets and local regulations prior to installation. Replace only with identical specifications.

This Markdown-formatted description highlights critical technical specs, applications, and safety features while maintaining clarity for electrical professionals. The “1*Fke/78” denotes a DIN-type fuse system with specific physical/electrical characteristics, and Uc confirms rated breaking capacity at 690V.