Description
The Mersen AJT300 is a Class J time-delay fuse designed for high-current applications. This fuse offers robust protection for circuits while being compact and efficient compared to traditional fuse options.
Key Features
- Visual Indication: Available in non-indicating or SmartSpot visual open fuse indicator versions for easy detection of fuse status.
- Time-Delay Function: Time-delay capability allows the fuse to manage motor starting and transformer inrush currents, reducing nuisance blows.
- Current-Limiting: Provides high current-limiting performance to manage low peak let-thru currents effectively.
- Interrupting Rating: Features a 300kA interrupting rating, supported by self-certification and UL witnessed tests.
- Compact Design: Requires less mounting space than 600VAC Class RK fuses, enabling the use of smaller and more economical fuse blocks.
- Arc Flash Reduction: Recommended for reducing arc flash energy, enhancing operational safety.
- Selectivity: Facilitates easy 2-to-1 selectivity to prevent unwanted shutdowns.
- Dimensional Integrity: Unique Class J dimensions help avoid replacement errors.
- Durable Construction: High-visibility orange label for quick brand recognition, with metal-embossed date and catalog number for traceability.
- Robust Material: Constructed with a fiberglass body and high-grade silica filler for stability in harsh environments and effective arc quenching.
- Optional Indicator: Optional EI indicator/switch mount available for AJT70 to 600 for open fuse indication.
Specifications
- Manufacturer Part Number: AJT300
- Voltage Rating (AC): 600 V
- Ampere Rating: 300 A
- Fuse Class: Class J
- Interrupting Rating: 300kA
- Body Material: Fiberglass with high-grade silica filler
- Standards Approvals:
- UL listed to standard 248-8
- DC listed to UL standard 248
- CSA certified to standard C22.2 No. 248.8
- IEC 60269-2-1
- Applications:
- Motor circuits
- Mains
- Feeders
- Branch circuits
- Lighting, heating, and general loads
- Transformers
- Control panels
- Circuit breaker back-up
- Bus duct
- Load centers
JTD300 | LPJ300SP
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