A4BT1800 - 1800 Amp Fuse Description
A4BT1800 - 1800 Amp Fuse
When your electrical systems demand serious overcurrent protection, the Mersen A4BT1800 Amp-Trap® Class L Time-Delay Fuse delivers the performance and reliability industrial facilities depend on every day. Built for high-capacity power distribution applications, this 1800A Class L fuse is designed to protect mains, feeders, switchgear, transformers, and large motor circuits from damaging overloads and short circuits. Its time-delay functionality allows temporary inrush currents during motor startups or equipment energization to pass without unnecessary fuse operation, helping reduce downtime and maintain productivity.
The A4BT1800 also features advanced current-limiting protection that reacts quickly during fault conditions to help minimize potential equipment damage and improve overall system safety.
Key Features and Benefits
- 1800 Amp Current Rating designed for high-capacity industrial and commercial electrical systems
- Class L Time-Delay Protection helps prevent nuisance openings caused by temporary startup surges
- Current-Limiting Design helps reduce potential damage during short-circuit events
- Rated for 600VAC and 500VDC applications
- 200 kA interrupting capacity supports protection in high fault-current environments
- Bolted blade terminal connection provides secure installation and dependable conductivity
- Silver-plated copper terminals help resist corrosion and improve electrical performance
- Allows 100% continuous loading under normal operating conditions
- Ideal for protecting motors, feeders, switchgear, transformers, and power distribution systems
Technical Specifications
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Manufacturer: Mersen
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Catalog Number: A4BT1800
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Product Type: Class L Time-Delay Fuse
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Series: A4BT Amp-Trap®
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Ampere Rating: 1800A
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AC Voltage Rating: 600VAC
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DC Voltage Rating: 500VDC
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Frequency: 50/60 Hz
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Fuse Class: Class L
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Speed / Characteristic: Time Delay
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Interrupting Rating: 200 kA AC
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Terminal Type: Blade
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Mounting Style: Bolted
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Terminal Material: Silver-Plated Copper
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Body / Insulating Material: GMG
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Product Length: 273 mm
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Product Diameter: 88.9 mm
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Product Weight: 3.6877 kg
Material Compliance and Certifications
- RoHS Compliant for environmentally conscious installations
- Designed for UL low-voltage fuse applications
- Suitable for both AC and DC circuit protection systems
Where It Works Best
- Industrial manufacturing plants
- Commercial power distribution systems
- Motor control centers
- Large HVAC equipment and compressors
- Utility and infrastructure projects
- Switchboards and panelboards
- Heavy-duty feeder circuits
- Data centers and mission-critical facilities
- Electrical systems with high available fault current
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Specifications
- Width:2.75
- Depth:2.75
- Height:10.75
- Amperes:1800
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:A4BT
- Additional Notes:Knife-Blade Style, Non-Indicating, 10-second Time-Delay (at 500% of rating), current-limiting Class L Fuse
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You may return unused items within 30 days of delivery for a full refund.
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