Littelfuse Class J Fuse Disconnect Switches

Littelfuse Class J Fuse Disconnect Switches combine a switch and multiple fuses in a compact device. The Class J fuse disconnect switches come with both front or side operations to offer a simple way to manually open/close a circuit while safeguarding against overcurrent and short circuits. These Class J switches feature fuse isolation, making it easy to segregate a particular fuse on the circuit for safe repair or maintenance. Class J fuse disconnect switches can operate at temperatures ranging from -20°C to +50°C and offer a voltage rating of 600V AC. Typical applications include industrial, HVAC/R, mining, solar, and battery energy storage systems.

Features

  • Available in double break contact system:
    • Using breaks circuit upstream and downstream enables the switch to handle higher voltages and provide a longer switch life
  • Comes with fuse isolation:
    • It is easy to segregate a particular fuse on the circuit for safe repair or maintenance by using this
  • Horizontal, vertical, and 45° mounting orientations:
    • To adapt the system design it offers switch installation options
  • Small footprint:
    • Saves space and provides design flexibility
  • Support test position on handle:
    • Offer control circuit auxiliary testing without switching to the main contacts on for added safety

Applications

  • Auxiliary services transformers
  • Battery energy storage systems
  • HVAC/R:
    • Air handling units
    • Compressors
    • Rooftop systems
  • Industrial:
    • Distribution panels
    • Switchboards
    • UPS systems
    • Voltage stabilizers
  • Mining:
    • Conveyor systems
    • Main substations

Technical Specifications

Parameters Values
LM3030 LM3060 LM3100 LM3200
Voltage rating 600V AC
Insulation voltage rating Ui 1000V AC
SCCR rating 200kA
Operating temperature range -20°C to +50°C
Amperage rating 30A 60A 100A 200A
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