Description
Product Overview
Cummins RS20AC 20kW QuietConnect™ Standby Generator with 200A SE Transfer Switch provides dependable automatic backup power for compatible residential and light-commercial applications. This complete power solution combines a 20kW standby generator with a 200-amp service-entrance transfer switch for automatic power management during utility outages.
Designed to operate on natural gas or liquid propane (LP), the RS20AC provides fuel flexibility while the QuietConnect™ platform is engineered for reliable standby operation with reduced operating noise.
Key Features
- 20kW Standby Power: Provides substantial backup capacity for compatible homes, properties, and light-commercial electrical loads.
- 200A SE Transfer Switch Included: Includes a 200-amp service-entrance-rated automatic transfer switch for integration into a properly configured electrical system.
- Automatic Backup Operation: The system is designed to detect a utility outage and automatically transfer compatible electrical loads to generator power.
- Dual-Fuel Capability: Designed to operate using compatible natural gas or liquid propane fuel supplies.
- QuietConnect™ Technology: Engineered to provide dependable standby performance while minimizing operating noise.
- Permanent Standby Installation: Designed as a permanently installed backup-power system rather than a portable generator.
- Automatic Power Transfer: The included transfer switch manages the transition between utility and generator power when properly installed.
- Residential & Light-Commercial Applications: Suitable for appropriately sized homes, properties, offices, workshops, and other compatible facilities.
Automatic Backup Power
When properly installed, the Cummins RS20AC works with the included automatic transfer switch to provide backup electricity when normal utility service is interrupted. The system can automatically start the generator and transfer compatible electrical loads to standby power, then return the property to utility power when service is restored.
Natural Gas & Liquid Propane
The RS20AC supports natural gas and liquid propane, providing flexibility when planning the property’s standby fuel system. The exact generator output and fuel requirements should be confirmed for the selected fuel configuration before installation.
Product Specifications
| Brand | Cummins |
| Model | RS20AC |
| Series | QuietConnect™ |
| SKU | SH-AP-A071Z402 |
| Product Type | Automatic Standby Generator |
| Power Class | 20kW |
| Fuel Type | Natural Gas / Liquid Propane |
| Transfer Switch | Included |
| Transfer Switch Rating | 200A |
| Transfer Switch Type | Service Entrance (SE) |
| Operation | Automatic Standby |
| Installation | Permanent |
| Primary Application | Residential & Light-Commercial Backup Power |
Complete Standby Power Solution
With its 20kW power class, 200A service-entrance transfer switch, dual-fuel capability, and QuietConnect™ design, the Cummins RS20AC provides a comprehensive solution for properties requiring dependable automatic backup power.
Important: Generator sizing and installation should be based on actual electrical loads, starting requirements, voltage, fuel supply, local codes, and site conditions. Confirm the exact model specifications and have the generator, fuel system, and transfer switch installed by appropriately qualified professionals.


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