Overview
The Ferraz A025R350 is a 250V AC/DC 350A fuse engineered for industrial automation and machinery protection. Manufactured by Ferraz Shawmut (now part of Mersen), this fuse provides dependable overcurrent and fault protection in low-voltage control circuits, distribution panels, and motor circuits. The dual voltage rating (250V AC/DC) makes it suitable for both AC and DC applications in facility-wide automation environments.
Key Features
- 350A current rating for high-capacity circuit protection
- 250V AC/DC dual voltage compatibility
- UL and CSA certified for safety compliance
- Industrial-grade design for reliable performance
- Fast-acting or time-delay characteristics (dependent on class)
- Compact, plug-or-clip mount design for easy installation
Technical Specifications
- Manufacturer: Ferraz Shawmut (Mersen)
- Model: A025R350
- Reference #: 08-23-070003
- Current Rating: 350 Amperes
- Voltage Rating: 250V AC/DC
- Interrupt Rating: Typically 10–200 kA (depends on class)
- Approvals: UL 248, CSA C22.2
- Mounting Type: Clip or Plug
- Weight: Approx. 1.5–2.7 lbs (varies by class)
- Operating Temperature Range: –40°C to +70°C typical
Typical Applications
Ferraz 350A fuses are commonly used in:
- Industrial control panel circuits and distribution boards
- Motor starter circuits and motor branch protection
- PLC and automation system power supplies
- Transformer and feeder circuit protection
- Machinery and process control equipment
- DC and AC machinery power distribution
Compatibility & Replacements
Compatible With
- Industrial control cabinets and distribution panels rated 250V
- Motor starter circuits (AC and DC)
- Automation system power supplies
- Process control machinery
- Facility power distribution systems
- Machinery requiring branch circuit protection
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The A025R350 may be interchangeable with other Ferraz Shawmut 250V 350A fuses such as the A2K350R (RK1 class) or RL350 (Class H), depending on the fuse class required for your application.
Works With
- Panel-mounted fuse holders (clip or plug style)
- Industrial automation control systems
- 250V AC and DC power distribution networks
- Motor control centers
- Power distribution equipment
- PLC and drive protection circuits








