UL 248-1
Low-Voltage Fuses - Part 1: General Requirements

DETAILS
Edition Number:3SCC Approved:--
Edition Date:2011-05-13DOD Approved: --
Price Code:AANSI Approved: 2017-06-16
Type:ulcsance

  • SCOPE

    1.1 Scope

    1.1.1 This Standard applies to low-voltage fuses rated 1000 V or less, AC and/or DC, with interrupting ratings up to 300 kA (200 kA for Mexico). These fuses are intended to be used in accordance with the Canadian Electrical Code, Part I (CEC), and the National Electrical Code, NFPA 70 (NEC).

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • UL Harmonized Standard Title Page
    • Table of Contents
      • Low-Voltage Fuses – Part 1: General Requirements
        • 1 General
          • 1.1 Scope
          • 1.2 Object
        • 2 Definitions
          • 2.1 Fuse
          • 2.2 General terms
          • 2.3 Characteristic quantities
        • 3 Service conditions
        • 4 Classification
        • 5 Characteristics
          • 5.1 Summary of Characteristics
          • 5.2 Voltage rating
          • 5.3 Current rating
          • 5.4 Frequency rating
          • 5.5 Interrupting rating
          • 5.6 Peak let-through current and clearing It characteristics
        • 6 Marking
          • 6.1 Marking of fuses
          • 6.2 Marking symbols
        • 7 Construction
          • 7.1 Dimensions
          • 7.2 Current-carrying parts
          • 7.3 Connections
          • 7.4 Adhesives
          • 7.5 Contact alignment
          • 7.6 Body
          • 7.7 Corrosion protection
        • 8 Tests
          • 8.1 General
          • 8.2 Verification of temperature rise and current-carrying capacity
          • 8.3 Verification of overload operation
          • 8.4 Verification of operation at rated voltage
          • 8.5 Verification of peak let-through current and clearing It characteristics
    • ANNEX A (normative)
    • ANNEX B (normative)