Overview
The Bussmann FWP-125A is a high-speed semiconductor fuse engineered for protection and isolation of sensitive semiconductor components in demanding electrical systems. This North American-style stud-mount fuse combines fast-acting characteristics with excellent thermal dissipation, making it ideal for applications involving diodes, SCRs, GTOs, IGBTs, and DC power converters where rapid fault clearing is essential.
Key Features
- High-speed, fast-acting fuse optimized for semiconductor protection
- Stud-mount blade terminal design for secure, reliable connections
- Excellent cycling capability and DC performance in harsh environments
- Optimized dimensions and materials for superior thermal dissipation
- Suitable for heavy-duty DC traction and power conversion applications
- RoHS compliant and UL-listed for industrial compliance
Technical Specifications
- Part Number: FWP-125A
- Current Rating: 125A (RMS)
- Voltage Rating: 700VAC / 700VDC
- Interrupt Rating: 200kAIC at 700VAC; 50kAIC at 700VDC
- Fuse Type: Semiconductor, Fast Blow (Very Fast Acting)
- Terminal Connection: Blade end x blade end with stud mount
- Body Material: Ceramic (nonrejection design)
- Length: 5-3/32 inches
- Diameter: 1-1/2 inches
- Series: FWP
- Approvals: UL listed, RoHS compliant
Typical Applications
- Semiconductor device protection (diodes, SCRs, GTOs, IGBTs)
- DC link and power converter circuits
- High-current DC traction systems (up to 10,000A applications)
- Industrial power distribution and circuit protection
- Renewable energy systems requiring rapid fault isolation
- Heavy-duty industrial motor control circuits
Compatibility & Replacements
Compatible With
- DC power systems rated up to 700V
- Semiconductor protection circuits and devices
- Industrial electrical control panels
- Power converter and inverter systems
- Stud-mount fuse holders and blocks designed for blade-terminal fuses
Replaces / Drop-In Replacement For
- Ferraz/Gould A70P
- Littelfuse equivalent models
- Other Bussmann FWP series 125A variants with identical mounting
Works With
- Eaton Bussmann fuse holders and holders supporting blade-terminal fuses
- North American stud-mount electrical systems
- DC-rated industrial control equipment
- Semiconductor protection and power management applications
