Compatible with a wide range of engines, the SGC 421 Mk II offers flexible genset and breaker control with an electronic governor and extensive configuration options including PLC logic customisation.

Specially designed to meet the needs of OEMs and genset packagers, the SGC 421 Mk II single genset controller contains all the functions you need to protect and control a genset, a genset breaker, and a mains breaker. It is compatible with a wide range of engines and can be configured for applications including engine drive, standalone genset control (off-grid/island mode), and Auto Mains Failure (AMF). With its battery charging and shelter temperature monitoring features, you can also use the SGC 421 Mk II for telecom base transceiver station (BTS) applications.

Electronic governing feature

The SGC 421 Mk II includes electronic governing for engines with mechanical fuel systems. With a rotary actuator as add-on for air/fuel charge control, you can use the SGC 421 Mk II for electronic governing of the engine within ISO 8528 class G3 limits.

Designed to control and protect

With the SGC 421 Mk II, you get a wide range of control and protection features for engines and generators, including coolant temperature control, electrical monitoring, and grid voltage/frequency monitoring. The controller can automatically exercise the engine, and it can balance the running hours between two gensets. You can configure start sequences for engines with different dynamics, and the practical deep sleep function extends the battery life by suspending normal controller functions when the genset is off.