Features: - Standard modular structure with DIN rail installation - Real-time monitoring of DC overvoltage and undervoltage faults - No external auxiliary power supply required - Adjustable overvoltage and undervoltage setpoints - Adjustable response time - Two sets of normally open and normally closed contacts - Two indicator LEDs for status indication - Typical applications: DC motors, batteries, UPS systems, DC switchgear, DC panels, industrial control systems Specifications: - Protection functions: Overvoltage and undervoltage - Model: DVRD-12 / DVRD-24 / DVRD-36 / DVRD-48 (selectable) - Rated voltage: DC 12 V / 24 V / 36 V / 48 V (selectable) - Monitoring circuit: DC circuit - Overvoltage adjustment range: - DC 12 V: 13–17 V - DC 24 V: 26–34 V - DC 36 V: 39–51 V - DC 48 V: 52–68 V - Undervoltage adjustment range: - DC 12 V: 10–14 V - DC 24 V: 20–28 V - DC 36 V: 30–42 V - DC 48 V: 40–56 V - Response delay range: 0.1–15 seconds - Status indication: Two LEDs (normal operation and tripped state) - Contact configuration: Two sets of NO/NC contacts - Contact rating: 6 A at 250 V AC (resistive load) - Installation: 35 mm DIN rail - Dimensions: Approx. 79 × 23 × 79 mm (3.1 × 0.9 × 3.1 in) - Weight: Approx. 200 g (7.1 oz) Package includes: - 1 × Overvoltage and Undervoltage Protector