Mersen AJT500 Fuse – Class J – 500A – 600VAC/500VDC – Time-Delay Blade Fuse (Amp-Trap 2000® AJT)

The Mersen AJT500 is a Class J time-delay fuse designed for high-capacity industrial power distribution systems requiring reliable inrush tolerance and fast short-circuit protection. Rated at 500 Amps, this Amp-Trap 2000® fuse allows temporary overload conditions while providing rapid and safe interruption during fault events. With voltage ratings of 600VAC and 500VDC, it is suitable for both AC and DC systems requiring high interrupting capacity, compact installation, and selective coordination.

Voltage and Rating

• Current Rating: 500 Amps
• Voltage Rating: 600VAC / 500VDC
• Frequency: 50/60 Hz
• Fuse Class: Class J
• Fuse Type: Time-Delay (Dual-Element)

Key Specifications

• Product Type: Industrial Time-Delay Fuse
• Series: Amp-Trap 2000® AJT
• Part Number: AJT500
• Manufacturer: Mersen
• Mounting Style: Blade
• Response Type: Time-delay for motor and inrush current tolerance
• Indicator: SmartSpot® blown-fuse indicator

Technical Specifications

• Protection Type: Overcurrent and short-circuit protection for industrial circuits
• Application Suitability: Motor circuits, transformers, feeders, and large power distribution systems
• Coordination Type: Designed for selective coordination with downstream protective devices
• Construction Features: High interrupting capacity, current-limiting design, and controlled delay performance
• System Integration: Suitable for AC and DC systems up to rated voltage limits

Standards and Approvals

• UL Listed
• CSA Certified
• Class J fuse standard compliant
• IEC equivalent industrial protection standards (where applicable)

Product Data

• Manufacturer: Mersen
• Series: Amp-Trap 2000® AJT
• Part Number: AJT500
• EAN/UPC: 782001962173

Applications

• Motor control centers (MCCs)
• Industrial power distribution systems
• Transformer protection
• Feeder circuits and sub-feeders
• Heavy industrial machinery
• HVAC systems and large compressors
• Commercial and industrial installations
• Systems requiring inrush tolerance with high fault protectio

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You may return items within 30 days of delivery for a refund.

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