Bussmann Time Delay Midget Fuse FNM Series 1A 250V Dual Element Non-Indicating Ferrule End

Bussmann Time Delay Midget Fuse FNM Series 1A 250V Dual Element Non-Indicating Ferrule End

Professional-Grade Electrical Protection for Control Circuits and Meter Applications

The Bussmann Time Delay Midget Fuse FNM Series delivers superior electrical protection and circuit safety for control circuits, meter applications, and low-amperage electrical systems. This dual element time delay fuse features advanced current limiting technology designed for electrical contractors, industrial facilities, and commercial installations, providing the reliable overcurrent protection and industry-leading safety that electrical professionals demand for sensitive electronic equipment and control systems.

Professional Features & Benefits

Advanced Time Delay Protection

• Dual Element Design - Provides superior time delay characteristics for motor starting and inrush current tolerance
• 1 Ampere Rating - Precise overcurrent protection for sensitive control circuits and electronic equipment
• Time Delay Response - Allows temporary overloads while protecting against sustained overcurrent conditions
• Current Limiting Technology - Reduces let-through energy and minimizes damage during fault conditions

Safety & Standards Compliance

• 35 AIC Interrupt Rating at 250VAC - Safely clears high fault currents in commercial and industrial applications
• 10 kAIC at 125VDC - Reliable DC circuit protection for control systems and battery applications
• CE Marked Compliance - Meets European safety standards for international installations

Technical Specifications

This midget fuse operates at 1 ampere with 250V AC rating and dual element construction. Features ferrule end connections for secure installation, 35 AIC interrupt rating at 250VAC and 10 kAIC at 125VDC. Compact dimensions of 1.5 inches length by 0.41 inches diameter with nickel-plated bronze endcaps for corrosion resistance. Non-indicating design with dual element time delay characteristics for reliable overcurrent protection in control and meter circuits.

Installation & Setup

1. Verify power is completely disconnected and use proper lockout/tagout procedures before installation
2. Inspect fuse holder and clean contacts to ensure proper electrical connection
3. Insert fuse with ferrule ends fully seated in fuse holder clips for secure connection
4. Verify proper amperage rating matches circuit requirements and load characteristics
5. Test circuit operation and monitor for proper fuse performance after installation
6. Document installation date and fuse specifications for maintenance records

Professional Applications

Ideal for:

• Control Circuit Protection - Motor control panels, relay circuits, and automation systems requiring precise overcurrent protection
• Meter Circuit Applications - Electrical meters, instrumentation, and monitoring equipment protection
• Electronic Equipment Protection - Sensitive electronic devices and control systems requiring time delay characteristics
• Low Voltage DC Systems - Battery backup systems, DC control circuits, and renewable energy applications
• Industrial Control Panels - PLC systems, variable frequency drives, and process control equipment
• Commercial Building Systems - HVAC controls, lighting controls, and building automation systems
• Instrumentation Circuits - Test equipment, measurement devices, and calibration systems
• Motor Starting Circuits - Small motor applications requiring inrush current tolerance

Dual Element Time Delay Advantage

The dual element design provides superior selective coordination and time delay characteristics compared to single element fuses. This technology allows temporary overloads while providing fast response to short circuit conditions, making it ideal for applications with inrush currents or starting loads. The current limiting action reduces arc energy and system stress during fault conditions.

Why Choose Bussmann Quality?

Bussmann represents over 100 years of electrical protection innovation, delivering CE marked compliance, reliable overcurrent protection, and proven performance in professional installations. Our commitment to quality manufacturing, rigorous testing, and electrical safety standards ensures dependable circuit protection for control systems, meter applications, and sensitive electronic equipment in commercial and industrial environments.