NEMA FU 1:2012
Current
The latest, up-to-date edition.
Low Voltage Cartridge Fuses
Hardcopy , PDF
English
11-09-2013
Foreword
Section 1 GENERAL
1.1 Scope
Section 2 DEFINITIONS AND ABBREVIATIONS
2.1 Definitions
Section 3 SERVICE CONDITIONS
3.1 Usual Service Conditions
3.2 Unusual Service Conditions
Section 4 RATINGS
4.1 Current Ratings of Non Time-Delay Fuses
4.2 Current Ratings of Time-Delay Fuses
4.3 AC Voltage Ratings
4.4 DC Voltage Ratings
4.5 AC Interrupting Ratings
4.6 DC Interrupting Ratings
4.7 Frequency Rating
Section 5 FUSE CLASSES
5.1 Summary of Fuse Classes
5.2 Class G Fuses (Current Limiting) 0-60 Amperes,
480 V And 600 V, Alternating Current
5.3 Class H Fuses 0-600 Amperes, 250 V And 600 V,
Alternating Current
5.4 Class J Fuses (Current Limiting) 0-600 Amperes,
600 V, Alternating Current
5.5 Class K Fuses 0-600 Amperes, 250 V And 600 V,
600 V, Alternating Current
5.6 Class L Fuses (Current Limiting) 601-6000
Amperes, 600 V, Alternating Current
5.7 Class R Fuses (Current Limiting) 0-600 Amperes,
250 V And 600 V, Alternating Current
5.8 Class T Fuses (Current Limiting) 0-1200 Amperes,
300 V And 600 V, Alternating Current
5.9 Class CC Fuses (Current Limiting) 0-30 Amperes,
600 Volts, Alternating Current
5.10 Fuses for Photovoltaic Systems (Current Limiting)
PV fuses
Section 6 PERFORMANCE
6.1 General
6.2 Current Carrying Capacity and Temperature Rise Tests
6.3 Overload Opening Time
6.4 Interrupting Tests at Rated Voltage
6.5 Maximum energy
6.6 Maximum threshold ratio
6.7 Direct current tests
6.8 Direct Current Tests for Photovoltaic Fuses
Covers eight classes of low voltage cartridge fuses consisting of a current-responsive element inside a fuse body with contacts on both ends, rated 600 V or less, ac and dc.
| DocumentType |
Standard
|
| Pages |
45
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Current
|
| Supersedes |
| IEEE 141 : 1993 | IEEE Recommended Practice for Electric Power Distribution for Industrial Plants |
| IEEE 242-2001 | IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book) (Color Book® Series) |
| ASHRAE HDBK REFRIGERATION : 2014 | ASHRAE HANDBOOK - REFRIGERATION |
| IEEE 551 : 2006 | CALCULATING SHORT-CIRCUIT CURRENTS IN INDUSTRIAL AND COMMERCIAL POWER SYSTEMS |
| NEMA PB 1:2011 | Panelboards |
| NEMA KS 1:2013 | Heavy Duty Enclosed and Dead-Front Switches (600 Volts Maximum) |
| NEMA PB 2:2011 | Deadfront Distribution Switchboards |
| IEEE C37.96-2012 | IEEE Guide for AC Motor Protection |
| IEEE C37.27-2008 REDLINE | IEEE Application Guide for Low-Voltage AC Power Circuit Breakers Applied with Separately-Mounted Current-Limiting Fuses |
| NEMA BS 31047:2013(R2023) | Heavy Duty Enclosed and Dead-Front Switches (600 Volts Maximum) |
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