RM-PS3

HomeProductsVoltage/phase control relaysAuto phase selector switch

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RM-PS3

Microcontroller based.
Parameter setting by knobs
With “Priority” phase
Overvoltage and undervoltage
LED indication for control state
Din-rail mounting

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Application Data Sheet Send Inquiry

Auto phase switch is designed to supply industrial and household appliance single-phase 220V/50Hz loads from three-phase four-wire mains 3x380+N with the purpose of maintaining uninterrupted power supply of essential single-phase loads and protect them against unallowable voltage fluctuation in the mains.

Technical data

Supply terminals	N,L1,L2,L3
Rated supply voltage	AC 3*220V(N-L1/L2/L3)
Operation voltage range	AC50-400V
Rated frequency	50/60Hz
Umax setting range	230-280V
Umin setting range	160-210V
Auto-reclosing delay(Ton)	1-600s
Return delay to priority phase	5-200s/OFF
Switch delay to reserve phases	＜0.2s
Voltage hysteresis	6V
Voltage accuracy	＜1%
Max operating phase voltage	400V
Transient withstand	450V
Maximum switched current of output contacts	16A
Pollution degree	3
Electrical life	10⁵
Mechanical life	10⁶
Altitude	≤2000m
Ambient temperature	-25℃~+50℃
Permissable relative humidity	≤50% at 40℃（without condensation）
Storage temperature	-25℃~+55℃
Conductor size	0.5mm²~1mm²
Torque	0.5Nm

Front-face panel

Wiring diagrams

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