Replacement automatic-mains-failure controller for a single diesel or gas generator set.
Compatible reference
DSE6120 MKII / 6120-03
Application
Monitors mains availability, starts the standby generator when utility power fails and supports automatic load transfer control.
OEM reference data for model matching
- DC supply reference: 8–35 V DC
- Generator and mains sensing reference: 15–415 V AC phase-to-neutral; 26–719 V AC phase-to-phase
- Frequency reference: 3.5–75 Hz
- OEM module size reference: 216 × 158 × 43 mm
- OEM panel cut-out reference: 184 × 137 mm
- Reference communication/features: USB configuration, CAN/MPU and DSENet expansion
Before ordering
- Send a clear photo of the old controller label and part number.
- Confirm MKII version and display language.
- Confirm panel cut-out, rear terminals and communication ports.
- Confirm whether the unit is required as a compatible replacement or genuine original.
Important: DSE6120 MKII is an obsolete OEM reference and has been superseded by MKIII. OEM reference values are for identification only. The replacement unit’s actual specifications must be confirmed before purchase.

