A4BT900 - 900 Amp Fuse

A4BT900 - 900 Amp Fuse

The A4BT900 is built to keep your high-amperage circuits safe without any fuss. It’s a knife-blade, non-indicating breaker, so installation is straightforward and there’s no extra clutter. With 900 amps and a 200 kA interrupting rating at 600 V.AC, it handles serious loads and keeps your equipment protected from overloads or short circuits. The 10-second time-delay at 500% of its rating means it won’t trip on short, harmless surges—perfect for motors or other equipment that draws a lot of power briefly. Compact and light at 10.75 inches tall and 2 pounds, it fits neatly in most panels.

Key Features and Benefits

• Handles heavy-duty loads up to 900 amps.
• 10-second time-delay at 500% prevents unnecessary trips.
• Current-limiting Class L fuse reduces damage in case of faults.
• Knife-blade style makes installation quick and easy.
• Non-indicating design keeps things simple.
• High interrupting rating of 200 kA @ 600 V.AC for strong protection.

Technical Specs

• Part Number: A4BT900
• Frame Type: A4BT
• Amperage: 900 A
• Height: 10.75 in
• Weight: 2.0 lbs
• A.I.C. Rating & Volts: 200 kA @ 600 V.AC
• Fuse Class: Current-limiting Class L
• Trip Style: 10-second time-delay at 500% rating
• Blade Type: Knife-blade, non-indicating

Where It Works Best

• This breaker is great for industrial plants, commercial buildings, and heavy equipment setups. It works well with motors, compressors, and HVAC systems that have short startup surges. Basically, anywhere you need reliable protection that won’t constantly trip, the A4BT900 gets the job done.