Tigo TS4-X-O Module Optimizer 800 W, 25 A, MC4

The TS4-X-O is the higher-rated sibling of the TS4-A-O, sized for modules whose current has outgrown older optimizers: 20 A at maximum power and 25 A short circuit, up to 800 W. Fitted under a module, it tracks that module's own maximum power point, so shading or mismatch on one panel no longer costs the whole string. With a Tigo Access Point (TAP) and Cloud Connect Advanced (CCA) it adds per-module monitoring and rapid shutdown, and an optional Tigo RSS transmitter gives a second shutdown path over the DC cable. It suits new systems as well as retrofits on an existing string inverter.

Key Features

• For modules up to 800 W, 20 A Imp and 25 A Isc
• MPP input voltage range 20-80 V, maximum input voltage 80 V
• System voltage up to 1000 V (IEC, MC4 version)
• Peak efficiency 99.6%
• Module-level monitoring and rapid shutdown within 30 seconds with TAP and CCA
• Recommended string fuse 30 A
• IP68 housing, operating range -40 to +85 °C, up to 3000 m altitude
• Clips onto the module frame or mounts on the racking, MC4 connectors
• 25-year warranty

Compatible with thousands of inverter models from more than 50 brands. Monitoring and rapid shutdown need the TAP and CCA, sold separately.