A4BT1200 - 1200 Amp Fuse Description
A4BT1200 - 1200 Amp Fuse
When your electrical system demands serious overcurrent protection, the Mersen A4BT1200 Amp-Trap® Class L Time-Delay Fuse is built to deliver dependable performance where it matters most. Designed for high-capacity industrial and commercial power systems, this 1200A Class L fuse helps protect mains, feeders, transformers, and large motor loads from damaging overcurrents and short circuits. Its time-delay design allows equipment to handle normal startup surges and inrush currents without nuisance fuse openings, helping keep you operations running smoothly and reducing unnecessary downtime.
Whether you're maintaining a manufacturing facility, upgrading switchgear, or protecting large HVAC and motor-driven systems, this Amp-Trap® fuse provides the confidence and protection professionals expects.
Key Features and Benefits
- 1200 Amp Class L Fuse designed for heavy-duty commercial and industrial applications
- Time-delay protection helps prevent nuisance openings during motor startup and high inrush conditions
- 600VAC / 500VDC rating supports both AC and DC circuit protection needs
- 200kA interrupting rating helps defend equipment against severe fault currents
- Current-limiting construction reduces thermal and mechanical stress during short circuits
- Blade-style bolted terminals provide a secure, dependable electrical connection
- Silver-plated copper terminals enhance conductivity and corrosion resistance
- Allows 100% continuous loading under normal operating conditions
- Manufactured for long-lasting performance in demanding electrical environments
Technical Specifications
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Manufacturer: Mersen
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Catalog Number: A4BT1200
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Product Series: A4BT – Amp-Trap®
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Fuse Class: Class L
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Fuse Type: Time-Delay
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Ampere Rating: 1200A
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Voltage Rating AC: 600VAC
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Voltage Rating DC: 500VDC
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Frequency: 50/60 Hz
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Interrupting Rating: 200kA AC
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Connection Type: Blade
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Mounting Style: Bolted
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Terminal Material: Silver-Plated Copper
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Insulating Material: GMG
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Product Length: 273 mm
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Product Diameter: 63.5 mm
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Product Weight: 1.9368 kg
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UPC: 782001939939
Material Compliance and Certifications
- RoHS Compliant
- Designed for use in UL and CSA low-voltage fuse applications
- Built to meet demanding industrial electrical protection requirements
Where It Works Best
- Industrial manufacturing facilities
- Motor control centers and large motor systems
- Commercial power distribution equipment
- Switchgear and switchboards
- Service entrance and feeder protection
- HVAC systems with large startup loads
- Utility and infrastructure projects
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Specifications
- Width:2.0
- Depth:2.0
- Height:10.75
- Amperes:1200
- 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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