A2D3R - 3 Amp Fuse Description
A2D3R - 3 Amp Fuse
The Mersen A2D3R Amp-Trap 2000® fuse is made for your electrical systems that need solid protection without constant nuisance shutdowns. Rated at 3 amps, this Class RK1 time-delay fuse is commonly used in motor circuits, feeders, and branch circuits where equipment sees normal startup surges. Instead of opening every time a motor kicks on, the A2D3R is designed to ride through temporary inrush currents while still clearing dangerous faults quickly when they happen.
That combination makes it a practical choice for industrial and commercial applications where keeping your equipment running matters. When a short circuit occurs, the fuse reacts fast to help limit damage to motor starters, switches, and other electrical components. In many facilities, it’s also used as a direct replacement for older Class H, K, and RK5 fuses already in service.
Installation is straightforward thanks to the ferrule-style design, which fits standard clip-mounted fuse holders. The compact body works well in control panels and tight electrical spaces, while the tin-plated copper terminals provide reliable electrical contact.
Key Features and Benefits
- Class RK1 time-delay fuse for motor and branch circuit protection
- Helps prevent nuisance openings during equipment startup
- Fast fault-clearing performance during short circuits
- 200 kA interrupting rating for demanding applications
- Replaces older Class H, K, and RK5 fuses
- Ferrule-style design for easy installation
- Compact size fits many existing fuse holders
Technical Specifications
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Manufacturer: Mersen
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Catalog Number: A2D3R
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Series: Amp-Trap 2000® A2D-R
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Fuse Class: Class RK1
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Fuse Type: Time-Delay
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Amp Rating: 3A
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Voltage Rating: 250VAC / 250VDC
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Frequency: 50/60 Hz
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Interrupting Rating: 200 kA AC
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Terminal Type: Ferrule
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Terminal Material: Tin-Plated Copper
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Mounting Style: Clip Mount
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Body Material: PolyTube
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Product Diameter: 14.2 mm
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Product Length: 50.8 mm
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Product Weight: 0.0168 kg
Material Compliance and Certifications
- RoHS Compliant
- Manufactured to meet Class RK1 standards
- Supports IEC Type 2 coordinated protection applications
Where It Works Best
- The Mersen A2D3R fuse is often used in:
- Motor control circuits
- HVAC systems
- Industrial machinery
- Manufacturing equipment
- Electrical distribution panels
- Branch circuit and feeder protection
- Control panels and switchgear
- Commercial and industrial power systems
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Specifications
- Width:0.56
- Depth:0.56
- Height:2.0
- Amperes:3
- A.I.C. Rating & Volts:200 kA @ 250 V.AC
- Type:A2D-R
- Additional Notes:Cartridge Style, Non-Indicating, Fast-Acting, current-limiting Class R Fuse
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