Bussmann MDQ-4 Time Delay Fuse

Bussmann MDQ-4 Time Delay Fuse

Engineered for Precision Protection in Demanding Applications

Premium Time-Delay Performance
The MDQ-4 fuse from Eaton’s Bussmann Series delivers reliable overload protection with a time-delay design. It withstands harmless temporary inrush currents (e.g., motor startups) while responding decisively to sustained faults, minimizing downtime and equipment damage.

Key Specifications

• Amperage: 4A
• Voltage Rating: 600V AC
• Interrupting Rating: 200,000A @ 600V AC
• Time-Delay: Optimized for extended tolerance to surges (300% overload)
• Compliance: UL 248-14 listed; CSA certified

Robust Construction
Featuring a ceramic body with precision-engineered element geometry for consistent performance and durability. Sand-filled construction ensures arc suppression and enhanced safety during fault interruptions.

Typical Applications

• Industrial control panels
• Motor control centers (MCCs)
• HVAC systems
• Power distribution panels
• Machinery and automation equipment

Why Choose MDQ-4?

• ✔️ Prevents nuisance tripping from transient loads
• ✔️ High fault current protection in compact design
• ✔️ Compatible with standard Class J fuse blocks
• ✔️ Maintenance-free reliability

Optimize system resilience with Bussmann’s legacy of electrical protection.

Part of Eaton’s Bussmann Series—trusted by professionals worldwide.

*Note: Always verify local electrical codes and compatibility before installation.*