Briggs & Stratton PowerProtect DX 20kW (040657) vs Cummins QuietConnect RS20AC 20kW with 200A ATS
Both units carry the same best-fuel running rating: 20,000 W. The Cummins QuietConnect RS20AC 20kW with 200A ATS is the quieter of the two (65 dBA vs 68 dBA — though manufacturers measure noise at different loads and distances). Warranty favors the Briggs & Stratton PowerProtect DX 20kW (040657): 10 years vs 5.
| Briggs & Stratton PowerProtect DX 20kW (040657) | Cummins QuietConnect RS20AC 20kW with 200A ATS | |
|---|---|---|
| Type | home-standby | home-standby |
| Fuel | natural-gas, propane | natural-gas, propane |
| Running watts (gas / LP for standby) | 20000 W | 20000 W |
| Running watts (propane) | 20000 W | 20000 W |
| Running watts (natural gas) | 20000 W | 18000 W |
| Noise level | 68 dBA | 65 dBA |
| Output voltage | 120/240V | 120/240V |
| Automatic transfer switch included | No | Yes |
| Main-line circuit breaker | 100 A | 100 A |
| Start type | automatic | automatic |
| Engine | Briggs & Stratton Vanguard | Cummins QSJ999G |
| Engine displacement | 993 cc | 999 cc |
| NG use at half load | — | 172 ft³/h |
| Propane use at half load | — | 1.81 gal/h |
| Weight | 520 lb | 596 lb |
| Warranty | 10 yr | 5 yr |
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