Mersen Amp-Trap® A50P A50P300-4 High-Speed Blade Fuse, 300A 500VAC / 450VDC — Pack of 10

Product overview

• Part number: A50P300-4
• Series: Amp‑Trap® A50P (Form 101)
• Manufacturer: Mersen
• Type: High‑speed blade fuse
• Ampere rating: 300 A
• Rated voltage: 500 V AC (UL), 450 V DC (UL)
• Interrupting capacity (AC Max I.R.): 52 kA
• Connection/terminal: Blade, tin‑plated brass
• Body/insulating material: GMG (glass‑mat reinforced)
• Dimensions: Diameter 1.50 in (≈38.1 mm); Length 4.34 in (≈110.2 mm)
• Mounting: Bolted (blade terminal)
• Quantity: Pack of 10

Key features

• High‑speed (low I2t) characteristic for fast clearing to protect power semiconductors and sensitive power electronics.
• High interrupting capacity of 52 kA for robust protection in industrial distribution and high‑fault‑current environments.
• Tin‑plated brass blade terminals provide reliable conductivity and corrosion resistance.
• Durable GMG insulating body suitable for demanding industrial applications.
• Form 101 Amp‑Trap A50P design for direct replacement in equipment specified for this series.

Typical applications

• DC drives and motor control systems
• Uninterruptible Power Supplies (UPS)
• Inverters, converters and power‑conversion equipment
• Semiconductor protection and industrial power distribution
• Maintenance spares and field replacements

Mechanical & packing data

• Product length: 4.34 in (≈110.2 mm)
• Product diameter: 1.50 in (≈38.1 mm)
• Sell pack quantity: 10 EA
• Sell pack weight: ~7.14 lb
• Packaging dimensions (sell pack): 4.38 in × 7.75 in × 3.00 in

Safety and installation notes

• Replace only with identical part number and rating to maintain intended protection characteristics.
• Install in bolted blade holders following equipment manufacturer torque and mounting instructions.
• Verify compatibility with system voltage, current and fault capacity before installation.
• For detailed time‑current curves, I2t values and ambient derating, consult the official Mersen datasheet.

What’s included

• 10 × Mersen Amp‑Trap® A50P A50P300-4 high‑speed blade fuses, 300 A, 500 VAC / 450 VDC

Verification

• Confirm part marking A50P300-4 and EAN/UPC (782001946197) on delivery. Request the official Mersen datasheet for full electrical characteristics and approvals.