micro controle – automação eletrónica


Switching relay for alternating control of three electric pumps – RAL 303 RED

Since (without VAT): 58.65

Triple Relay Relay – Network

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

Product description

Alternating relay for alternating control of three electropumps, control of lack of water in the supply network.
Signals of control by closing contact, boiadores and internal timing.
Alternating voltage for water supply probe.


  • Alternate control of three electric pumps and control of lack of water in the supply network
  • Control signals by closing contact, pressure switch and internal timing
  • Alternating voltage for water supply prob


Power the relay (green led on – A.1)

Two seconds after the closing of the contact pair “P1” (5-6) requires the operation of an electric pump. If the contact pair “P2” (7-6) closes, two secs. Then force the operation of the second electropump. Two seconds after closing the contact pair “P3” (6 – 8), the third electric pump is required.

The electric pumps in operation will switch off, respectively “P3”, “P2” and “P1”

When the pair “P1” is closed again, the first electric pump to be started will be the next in the sequence of the alternation. Terminal 1 is common to relay outputs 3, 9 and 11 for controlling the motors.

Whenever the “F.A.” alarm command – no water supply – (4 – 6) remains closed for more than 20 seconds, the relay will disarm the control contacts of the electric pumps and enter the alarm mode.

The relay will disarm the alarm 3 minutes after confirmation of water supply from the control unit (4 – 6).

Note: The images shown may not correspond completely to the product described.

Additional information

Weight 240 g
Dimensions 11 × 8.5 × 5.6 cm
Supply for probe level / pressure switch

24V AC

Room temperature

[-10ºC, +55ºC]

Output relay

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


AC (230V, 400V) / 50Hz


2VA (approx.)


230V AC, 400V AC


11-pin base

micro controle - automação eletrónica