Technical Parameters Nominal input voltage: 24 V DC Operating input voltage range: 22.5 V DC ~ 29.5 V DC Max continuous input current: 20 A Input reverse polarity protection integrated Max input power supply power: ≥ 480W recommended Battery Circuit Specifications Matching battery nominal voltage: 24 V DC lead-acid battery pack Built-in charging circuit charging current: Adjustable battery charging current Battery overcharge protection cut-off voltage: 28.8 V DC Deep discharge protection cut-off voltage: 21.0 V DC (prevents permanent battery damage) Battery reverse connection protection Max external battery capacity range: 7Ah ~ 65Ah UPS Backup Output Side Nominal output voltage (mains mode): 24 V DC tracking input voltage Output voltage during battery backup: 22.5 ~ 28.8 V DC Max continuous backup output current: 10 A Switchover time (mains loss to battery): ≤ 10 microseconds Output short-circuit & overcurrent foldback limiting protection Max total output power in UPS mode: 240W Protection Functions Input reverse polarity protection Battery reverse connection blocking protection Battery overcharge voltage cut-off Battery deep discharge low voltage shut-down Output short-circuit auto-recovery current limiting Output overcurrent protection Internal over-temperature thermal lockout protection Status & Alarm Signal LED indicators: Green (Mains OK), Orange (Battery Charging), Blue (UPS active), Red (Fault) Fault relay contact: Potential-free SPST NO contact, rating 30VDC / 1A resistive load Fault trigger conditions: battery fault, over-temperature, output short-circuit, mains abnormal long-term undervoltage Insulation & Safety Reinforced insulation between power circuit and monitoring circuit Dielectric withstand voltage: 2000 V AC / 1 min Overvoltage category III; Pollution Degree 2 Rated insulation voltage: 300 V Wiring Mechanical Parameters Terminal type: Screw clamp terminals Wire cross-section: Solid 0.5–6 mm², multi-strand 0.5–4 mm² Tightening torque: 0.8 ~ 1.2 N·m Wire stripping length: 8–10 mm Mechanical & Dimension Specs Mounting: TS35 standard top hat DIN rail Overall dimensions (W × H × D): 120 mm × 130 mm × 125 mm Net weight: ~1350 g Housing: Metal casing with plastic front panel Protection class: IP20 (indoor control cabinet only) Environmental Conditions Operating ambient temperature: 0 °C ~ +50 °C (derate output above 40°C) Storage & transport temperature: -20 °C ~ +70 °C Relative humidity: 5% ~ 93% RH, non-condensing Max operating altitude: ≤ 2000 m above sea level Vibration resistance compliant with IEC 60068-2-6 Compliance & Certifications Safety approvals: cURus UL Listed CE compliance standards: EN 61010-1, EN 61204-1, EN 61326 EMC Environmental compliance: RoHS 2011/65/EU, REACH SVHC registered