Cummins® RA212S3

The RA Automatic Transfer Switch is integrated with the RS series genset. These products are Listed to UL 1008, the standard for transfer switch safety. The switch and generator set combination is specifically designed for a simplified, quicker installation. These UL 1008 switches are suitable for standby power systems in residential and light commercial applications. These RA products adhere to National Electrical Code (NEC) and National Fire Protection Association (NFPA) requirements. The RA transfer switch monitors utility power 24 hours a day and 7 days a week. When utility power becomes unsatisfactory or fails; the generator set is signaled to start, then automatically transfers the load. When stable utility voltage returns, the transfer switch will automatically switch electrical load from the generator to the utility. No action is required by the home owner. The RA switch is also available in Service Entrance models. A service entrance version is also UL 1008 listed and makes use of a UL 489 listed circuit breaker.

Cummins® Transfer Switch, 1-Phase, Automatic, Service Entrance, Series: RA Series, 120 VAC, 200 A, 2 Pole, Molded Case Breaker, 100 ms Transfer, NEMA 3R, Screw Terminal, -13 to 131 deg F, 23.3 Inch H x 19.8 Inch W x 7.2 Inch D

• Mechanically interlocked contactor
• Long-life, high pressure, silver alloy contact resists burning and pitting
• A powerful and economical solenoid drives the mechanism
• Solid bus bar connection between circuit breaker and transfer switch
• Fully rated neutral and ground bar
• Bonding jumper on neutral and ground
• Silver plated copper ground and neutral bus
• Solderless screw type terminals for external power connections
• Independent break-before-make action is common for 2-pole
• Mechanical interlock prevents simultaneous closing of normal and emergency contacts
• Electrical interlocks prevent simultaneous closing signals to normal and emergency contacts and interconnection of normal and emergency sources through the control wiring
• Contacts are mechanically held in both normal and emergency positions for reliable, quiet operation
• Up to 90% at 20 deg C humidity
• Up to 2000 m (6561 ft) without derating altitude
• Transfer switches are equipped with a removable operating handle which allows operation during servicing in order to facilitate troubleshooting with sources of power disconnected
• Transfer time will not exceed 100 ms with normal voltage applied to the actuator
• 4 AWG to 300 kcmil copper/aluminum utility service entrance transfer switch lug capacities
• 6 AWG to 300 kcmil copper/aluminum (transfer switch and neutral only) and 14 to 2/0 AWG copper/aluminum (generator) service entrance transfer switch lug capacities
• 14 to 1/0 AWG copper/aluminum ground service entrance transfer switch lug capacities
• 10000 A coordinated molded case breakers

• Catalog https://www.cpesupply.com//ASSETS/DOCUMENTS/ITEMS/EN/Cummins_RA212N3_Catalog.pdf