Overview
The Ferraz Shawmut A100P225-4 is a fast-acting, current-limiting semiconductor protection fuse designed for 1000V AC applications. Part of the A100P Amp-Trap series, this Form 101 fuse delivers 100kA interrupting rating and is rated for 225 amperes, making it suitable for protecting UPS systems, AC and DC drives, reduced voltage motor starters, and similar semiconductor devices operating at 1000V or below.
Key Features
- Fast-acting, current-limiting design minimizes component damage during fault conditions
- 100kA interrupting rating at 1000VAC provides superior protection for semiconductor circuits
- Low I²t (thermal energy) reduces stress on protected components
- Controlled arc voltage minimizes transient damage to sensitive equipment
- Bolt-in blade terminal mounting for secure, reliable connection
- Form 101 Class cylindrical design (2″ diameter, 5.72″ height)
Technical Specifications
- Current Rating: 225A
- Voltage Rating: 1000VAC / 750VDC
- Interrupting Rating: 100kA @ 1000VAC
- Series: A100P Amp-Trap
- Form: 101 (Semiconductor Protection)
- Response Time: 25 ms typical
- Mounting: Bolted blade terminal
- Diameter: 2.0 inches
- Height: 5.72 inches
- Weight: 1 lb 9 oz
- UPC: 0782001948443
- UL Guide No.: JFHR2
Typical Applications
- UPS (Uninterruptible Power Supply) system protection
- AC and DC variable frequency drives (VFDs)
- Reduced voltage motor starters
- Semiconductor rectifier and inverter circuits
- Industrial power distribution at 1000V or below
- Equipment requiring low thermal damage and fast response times
Compatibility & Replacements
Compatible With
- Industrial UPS systems rated 1000VAC or less
- Variable frequency drives (VFDs) and soft starters
- AC and DC drive power circuits
- Reduced voltage motor control systems
- Semiconductor power distribution equipment
- Panel-mounted electrical systems using bolt-in fuse holders
Replaces / Drop-In Replacement For
- Ferraz Shawmut A100P225 (legacy designation)
- Mersen A100P225-4 (current parent company)
- Other Form 101 225A fuses with identical footprint and voltage rating
Works With
- Ferraz Shawmut / Mersen A100P bolt-in fuse holders
- Form 101 Class semiconductor fuse clips and bases
- Industrial electrical control systems and power panels
- UL-listed fused disconnects and safety switches
