Balboa GS520SZ Control box

Balboa GS520SZ Control box

In stock

Balboa GS520SZ spa control box including 3KW heater and PCB

2 pump and air blower control.

2" pipe connections.

Compatible with Blaboa topside controls from the deluxe VL range such as the VL700S and VL701S.

Fitted with 3kW heater.


26.8cm x 31.1cm x 11.7cm


Blower: 1 speed (optional) 

Pump 1: 1 or 2 speed with circ pump if required

Pump 2: 1 speed 

Heater: 3KW heater with M7 technology* (15" assembly with 2" diameter)

Spa light: 10V 12W – on/off

Radio, TV/AV: Point available

Ozone: Available

Audio visual device power output: Available

Electrical: 240V AC, 50Hz

This pack is connected to all components via amp plugs.

The GS range of spa control systems are Balboa designed using M7 temperature & water flow sensing technology. This increases the reliability, serviceability and installation ease of the system box..

All boxes have a plastic enclosure with gasket eliminating corrosion, condensation and water intrusion. Connectors are built on to the circuit board minimizing wires and simplifying service.