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Monitoring relay 71.31.8.400.2000

Model: 005.066.115
Monitoring relay 71.31.8.400.2000
Manufacturer: Finder (Italy)
Monitoring relay 71.31.8.4000.2000 detects phase asymmetry, phase rotation and phase loss in three phase 400VAC circuits.
• Adjustable asymmetry between phases (–5… –20)% Un.
• Rated current 10A.
• Detection of the supply voltage to A1 and/or A2 (see scheme below) > 1.11 Un.
• 1 change-over contact (SPDT).
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Technical data

Contact specification
Contact configuration1 change-over contact (SPDT)
Rated current/Peak current10A/15A
Rated voltage/Max switching voltage250VAC/400VAC
Rated load2500 VA (AC-1)
500 VA (AC-15 230Vac)
Single phase motor rating (230VAC)0.5 kW
Standard contact materialAgCdO
Supply specification
Nominal voltage (Un)400VAC
Rated power4 VA (50 Hz)
Operating range(0,8...1,11)Un
Complementary characteristics
Electrical life at rated load AC1100×103 cycles
Detection level Umin/Umax/Asymmetry0.8Un/1.1Un/(-5...-20)% Un
Trip on-delay/reaction time− / <0,5s
Ambient temperature range-20°C...+55°C
Protection categoryIP 20

Dimensions and wiring diagram

Dimensions of monitoring relay 71.31.8.400.2000

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