Solid State Relay (SSR-1 A4825) – Replacement Part for Sintron ST-004

✓ Compatible with Sintron ST-004 This is the official replacement Solid State Relay for the Sintron ST-004 Timer Control Power Box. If your ST-004 is no longer switching power on/off correctly, this is the most common component that needs replacing. Specifications Model SSR-1 A4825 Type Single-phase AC-to-AC Solid State Relay Output voltage 24–480VAC Output current 25A Control input voltage 70–280VAC Operating temperature -30°C to +75°C Dimensions 58.4 × 44.5 × 29.4mm Certifications CE, RoHS ⚠ Note: A heat sink is recommended when operating at high current loads to prevent overheating and extend the relay's lifespan.