C&I Three Phase Inverters Transition
Compatibility Matrix
			
			
				To better support our customers across a wide range of inverter platforms—whether using domestic or non-domestic content—we are introducing new capabilities designed to enhance both performance and flexibility. These updates aim to ensure greater compatibility and more seamless integration across diverse project requirements.
Legacy Inverters (Pre-Domestic Content)
| Compatibility | ||||
| Synergy Manager/ Three Phase Inverter PN | Description | Synergy Unit Compatibility | Legacy Power Optimizer (S440, S500B, S650B,U650, U650B, P850, P860, P950, P960, P1100, P1101, S1200, S1201) | Domestic Content Power Optimizer (C651U) | 
| SExxK-USxxIxxZ4  | Non-Domestic Content Three Phase Inverter (Fused, 4 strings) - 10k, 17.3k, 30k and 40k | N/A | 
 
 
 
 
 Full Compatibility | 
 
 
 
 
 Not Compatible | 
| SExxK-USxxIxxZ4  | Three Phase Synergy Manager, RSD, Multiple Input (Fused, 4 strings) - 80k and 50k-120k | 
 
 SESUK-USR0INNN4 
 
 USESUK-USR0INNN6 & USESUK-USR0INNN8 
 Full Compatibility | 
Bottom Line:
- Non-Domestic Synergy Managers are compatible with both non- and Domestic Synergy Units
- Optimizer: Non-Domestic Synergy Managers and Three Phase Inverters are NOT compatible with C651U
Domestic Content Inverters
| Compatibility | ||||
| Synergy Manager/ Three Phase Inverter PN | Description | Synergy Unit Compatibility | Legacy Power Optimizer (S440, S500B, S650B,U650, U650B, P850, P860, P950, P960, P1100, P1101, S1200, S1201) | Domestic Content Power Optimizer (C651U) | 
| USE-SIN-USR0IBNS8  | Domestic Content Three Phase Inverter (Fuse-less, 3 strings) | N/A | 
 Partial compatibility due to non-fused inverter. If using more than 2 strings per unit, then either: 
 | 
 
 
 
 Full Compatibility | 
| SE-DBL-US00IBNS4 SE-TRI-US00IBNS4  | Three Phase Synergy Manager, RSD, Multiple Input (Fuse-less, 3 strings) - 80k and 50k-120k | 
 
 
 
 
 Full Compatibility | ||
| SE-TRI-US00IBNW4  | Combined Input (Single DC Input) Three Phase Synergy Manager, RSD - 50k-120k | 
 Full compatibility with DC Combiner box (external to inverter) 
 | ||
Bottom Line:
- New Managers (DBL, TRI) are compatible with both non- and Domestic Synergy Units
- Optimizer: New Synergy Managers and Three Phase Inverters are compatible with C651U and partially compatible with legacy Power Optimizers
- Universal Solution: Single DC Input Synergy Manager (W4) with DC Combiner box is fully compatible with all SolarEdge Power Optimizers
Frequently Asked Questions
Yes, they are completely interchangeable and have no installation differences. You
can even mix them within a single 4-box.
You can use either non-domestic or domestic content Synergy units with those
legacy Synergy Managers.
Depends on the Synergy Manager type:
- Unfused Managers (DBL, TRI): Yes, these require inline fuses (Stäubli recommended) OR increased wire gauge, especially for three-string designs
- With C651U Power Optimizers: No special requirements
- Single DC input: Always requires DC combiner box (the same as before)
Coming soon. Designer will be 100% updated with compatibility checking and warning messages for configurations requiring special attention.
Yes, Stäubli inline fuses are recommended and available through distributors.
This is the "universal solution". It works with both legacy and domestic content Power Optimizers when paired with a DC combiner box. It always requires the combiner box regardless of optimizer type.
 
							







