Overview
The Ferraz A025R400 250V 400A fuse is a semiconductor-grade cartridge fuse engineered for industrial power distribution and motor control circuits. With dual AC/DC voltage capability at 250V and a 400A current rating, this fuse (#08-23-070024) provides dependable protection against overcurrent faults in machinery, control panels, and electrical systems. Ferraz Shawmut (now part of Mersen) fuses are industry-standard components trusted by controls engineers and maintenance technicians worldwide.
Key Features
- Dual-rated 250V AC/DC operation
- 400A current rating for high-current branch protection
- Semiconductor-grade construction for reliable arc suppression
- Cartridge style with standard ferrule ends
- UL and CSA approved for North American installations
- Compatible with standard fuse holders and disconnect switches
Technical Specifications
- Voltage Rating: 250V AC/DC
- Current Rating: 400A
- Fuse Type: Semiconductor cartridge
- Part Number: A025R400
- Cross-Reference: #08-23-070024
- Body Material: Ceramic with silver-plated ferrules
- Interrupting Rating: Typical 200kA @ 250V (semiconductor class)
- Approvals: UL 248, CSA C22.2
Typical Applications
- Motor starter branch circuits
- Power distribution panels and switchgear
- Industrial machinery control systems
- Semiconductor equipment protection
- VFD and drive input protection
- Transformer secondary protection
Compatibility & Replacements
Compatible With
- Standard cartridge fuse holders rated 400A @ 250V
- Ferraz Shawmut fuse blocks and enclosures
- Industrial disconnect switches and panel-mount holders
- Motor control centers (MCC) with compatible fuse clips
- Any circuit designed for 400A @ 250V AC/DC protection
Replaces / Drop-In Replacement For
Verify exact compatibility with your equipment documentation. Other Ferraz Shawmut 400A @ 250V models may be interchangeable depending on fuse holder type and interrupting rating requirements. Consult your system integrator if replacing a different semiconductor fuse series.
Works With
- Ferraz Shawmut fuse extraction tools and handling equipment
- Standard 2-pole and 3-pole disconnect switches
- Power monitoring and analytics systems with fuse status reporting
- Industrial control platforms using low-voltage DC systems
