Name: Hydro-Air 24V 10A automatic contactor
Brand: Rule

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The Rule Hydro-Air 24V 10A automatic contactor is an environmentally friendly automatic bilge pump control switch. With its mercury-free design, the pump operates with simple air pressure.

As water rises in the bilge, air rises in the air tube attached to the switch. The air pressure activates the switch that controls your pump. All wiring is out of the water, and there are no submerged electrical connections. Offering total reliability and exceptional performance, the Hydro-Air automatic switch from Rule offers a viable alternative to traditional float switches.

A pneumatically operated diaphragm switch, the switch can be mounted up to 3 m above the air bell, suitable for use with audible and visible high water level alarms.

RULE - HYDRO-AIR CONTACTOR 24V 10A

Technical specifications of the Rule Hydro-Air 24V 10A contactor:

Automatic contactor with pneumatic release 24V 10A max
Cable length: 3m
55mm at bottom of hold
Max. automatic shutdown at 25mm water level
Temperature between 0 and 50°C.
Contact protection (ISO 8846 Marine)

Rule Hydro-Air 24V 10A contactor operation:

Place a bilge pump in a suitable low location. Mount the Hydro-Air contactor in an elevated position and place the air bell at the same level as the bilge pump.
As the water rises, the air trapped in the air bell is pushed up into the Hydro-Air contactor
When a certain water level is reached, the air in the tube forces the Hydro-Air contactor to start the bilge pump to evacuate the water.
As the water drains away, the air in the tube decreases and the Hydro-Air switch stops the bilge pump.

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