| Specification |
Details |
| Model |
MRU3-11D |
| Series |
Professional Line |
| Type |
AC Voltage Protection Relay |
| Power Supply |
Self-powered from measured voltage (100–400 VAC) |
| Voltage Input |
Single-phase, 100–400 VAC |
| Frequency Range |
45–65 Hz |
| Protection Functions |
Undervoltage (ANSI 27), Overvoltage (ANSI 59), Phase asymmetry, Phase sequence |
| Setting Range |
Undervoltage: 0.7–1.0 x Un; Overvoltage: 1.0–1.3 x Un; Asymmetry: 5–20% |
| Tripping Delay |
Adjustable, typically 0.1–10 s |
| Output Relays |
2 change-over contacts (SPDT) |
| Digital Inputs |
Not specified (none in basic configuration) |
| Communication |
Not specified (none in basic configuration) |
| Operating Temperature |
-20°C to +55°C (-4°F to +131°F) |
| Storage Temperature |
-30°C to +70°C (-22°F to +158°F) |
| Relative Humidity |
5% to 95%, non-condensing |
| Vibration |
4 G, 5–500 Hz (estimated, based on Woodward standards) |
| Shock |
20 G peak (estimated) |
| Protection Rating |
IP40 (housing), IP20 (terminals) |
| Mounting |
DIN-rail (EN 60715) |
| Dimensions |
Approximately 45 mm x 75 mm x 110 mm (1.77 in x 2.95 in x 4.33 in) |
| Weight |
Approximately 0.3 kg (0.66 lbs) |
| Certifications |
CE, UL/cUL |
| System Compatibility |
Low voltage distribution systems, generators, industrial control panels |
