Today Onan branded products are built by Cummins Power Generation, a subsidiary of Cummins Inc. and a world leader in the design and manufacture of power generation products and services.

• See also:
• Masterformat 2004
• 26 10 00 - MEDIUM-VOLTAGE ELECTRICAL DISTRIBUTION
• 26 13 00 - Medium-Voltage Switchgear
• 26 18 00 - Medium-Voltage Circuit Protection Devices
• 26 18 13 - Medium-Voltage Cutouts
• 26 18 16 - Medium-Voltage Fuses
• 26 18 19 - Medium-Voltage Lightning Arresters
• 26 18 23 - Medium-Voltage Surge Arresters
• 26 18 26 - Medium-Voltage Reclosers
• 26 20 00 - LOW-VOLTAGE ELECTRICAL TRANSMISSION
• 26 24 00 - Switchboards and Panelboards
• 26 29 13 - Enclosed Controllers
• 26 30 00 - FACILITY ELECTRICAL POWER GENERATING AND STORING EQUIPMENT
• 33 71 00 - Electrical Utility Transmission and Distribution
• 33 77 00 - Medium-Voltage Utility Switchgear and Protection Devices
• 33 77 33 - Medium-Voltage Utility Cutouts
• 33 77 36 - Medium-Voltage Utility Fuses
• 33 77 39 - Medium-Voltage Utility Surge Arresters
• 33 77 53 - Medium-Voltage Utility Reclosers
• 48 00 00 - ELECTRICAL POWER GENERATION
• Masterformat 1995
• 16200 - Electrical Power
• 16300 - Transmission and Distribution
• 16330 - Medium-Voltage Switching and Protection
• 16420 - Enclosed Controllers
• 16440 - Switchboards, Panelboards, and Control Cen