Monitoring relay 71.31.8.400.2000

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Model: 005.066.115

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 configuration	1 change-over contact (SPDT)
Rated current/Peak current	10A/15A
Rated voltage/Max switching voltage	250VAC/400VAC
Rated load	2500 VA (AC-1) 500 VA (AC-15 230Vac)
Single phase motor rating (230VAC)	0.5 kW
Standard contact material	AgCdO
Supply specification
Nominal voltage (Un)	400VAC
Rated power	4 VA (50 Hz)
Operating range	(0,8...1,11)Un
Complementary characteristics
Electrical life at rated load AC1	100×10³ cycles
Detection level Umin/Umax/Asymmetry	0.8Un/1.1Un/(-5...-20)% Un
Trip on-delay/reaction time	− / <0,5s
Ambient temperature range	-20°C...+55°C
Protection category	IP 20

Dimensions and wiring diagram

Dimensions of monitoring relay 71.31.8.400.2000