micro controle – automação eletrónica


Borehole or well emptying control relay with electric pump protection – RFA 101 QEF

Since (without VAT): 21.84

QEF Level Relay – pump in service and termal shooting

Shipping is only available for Continental Portugal and Autonomous Regions (Madeira and Azores).

Product description

Control relay for emptying well or hole, with protection of submersible electric pumps against lack of water, indicated by led “Pump in Service” and “Thermal Shooting”.Adjustable sensitivity, according to the liquid conductivity (selected in the front button) 4 – 30 KΩ


  • Level control in conductive liquids through three probes (minimum, maximum and mass), with maximum level protection
  • Sensitivity adjustment 4 – 30 KΩ (depending on the conductivity of the immersion liquid)
  • Protection of electric pumps from lack of water
  • “Pump in Service” and “Thermal Shooting” indication

Additional information

Weight 210 g
Dimensions 11 × 8.5 × 5 cm
Sensitivity adjustable

4 a 30 KΩ

Room temperature

[-10ºC, +55ºC]

Output relay

AC 8A-250V / 50Hz – 1250VA DC 5A-24 V (C.R.)


AC (24V, 230V, 400V) / 50Hz


2VA (approx.)


24V AC, 230V AC, 400V AC


11-pin base

micro controle - automação eletrónica