Unit Substations

UL Standard Edition 4 Published Date: December 18, 2025 ANSI Approved: December 18, 2025

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Summary of Topics

$798.00-$1,990.00

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Standard	Edition	Title
50	14	Enclosures for Electrical Equipment, Non-Environmental Considerations
50E	3	Enclosures for Electrical Equipment, Environmental Considerations
67	13	Panelboards
746A	6	Polymeric Materials - Short Term Property Evaluations
746C	7	Polymeric Materials - Use in Electrical Equipment Evaluations
869A	4	Standard for Reference Standard for Service Equipment
1062	4	Unit Substations
1332	5	Organic Coatings for Steel Enclosures for Outdoor Use Electrical Equipment
1446	8	Systems of Insulating Materials - General
248-1	4	Low-Voltage Fuses - Part 1: General Requirements
248-4	2	Low-Voltage Fuses - Part 4: Class CC Fuses
248-5	2	Low-Voltage Fuses - Part 5: Class G Fuses
248-6	2	Low-Voltage Fuses - Part 6: Class H Non-Renewable Fuses
248-7	2	Low-Voltage Fuses - Part 7: Class H Renewable Fuses
248-8	3	Low-Voltage Fuses - Part 8: Class J Fuses
248-10	3	Low-Voltage Fuses - Part 10: Class L Fuses
248-11	3	Low-Voltage Fuses - Part 11: Plug Fuses
4248-1	3	Fuseholders - Part 1: General Requirements
4248-4	2	Fuseholders - Part 4: Class CC
4248-5	2	Fuseholders - Part 5: Class G
4248-6	2	Fuseholders - Part 6: Class H
4248-8	3	Fuseholders - Part 8: Class J
4248-9	2	Fuseholders - Part 9: Class K
4248-11	2	Fuseholders - Part 11: Type C (Edison Base) and Type S Plug Fuse
4248-12	3	Fuseholders - Part 12: Class R
4248-15	2	Fuseholders - Part 15: Class T
486A-486B	4	Wire Connectors

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Standard	Edition	Title
1062	4	Unit Substations

Standard

Edition

Title

1062

Unit Substations

Unit Substations