Float switch1/6/2024 ![]() Dimensional Drawings Dimensions in Inches (millimeters) Wire Size Wire Length Max. Do NOT use these switches in applications where the pump is operating above the maximum current in the table above. This product must be fused with the correct recommended fuse size for the pump to which it is connected. They can also be used to operate high water alarm systems. These versatile switches can be used in conjunction with high and low level alarms or control switching. Maximum Current Rating Voltage Rule-a-Matic Super Switch / Rule-a-Matic Plus All switches will turn the pump on when the water level reaches 2" (51 mm) and will turn the pump off when water level falls to 3/4" (19mm). We offer a wide variety of vertical and horizontal liquid level float switches, available in all stainless steel, stainless steel and buna, or plastics such as PVC, polypropylene, or PTFE. These durable switches are also suited for hazardous locations and harmful liquid materials. Ideal for liquid level tank applications. These 316 stainless steel vertical liquid level sensors are corrosion resistant, with high temperature capability and exceptional float buoyancy. Model Description 35FA Rule-a-Matic with fuse holder 37FA Super Switch with fuse holder 20A Rule-a-Matic covered switch 40FA Rule-a-Matic covered switch 20A with fuse holder Installation Instructions The Rule-a-Matic, Super Switch, and Rule-a-Matic Plus float switches are suitable for any submersible bilge pump with an operating current rating as listed below. Vertical Float Switches - Stainless Steel. Environmentally friendly mercury free design.Highly abrasion resistant marine grade blocked wire.Snap switch tested to over 1,000,000 cycles 12V.The “PUMP UP” version will be used for LOW level alerts. The “PUMP DOWN” version will be used for HIGH level alerts. Also as explained earlier, you have “PUMP DOWN” and “PUMP UP” versions. No control switch will ever come with a plug, again because it will be wired directly to a control panel or alarm box. The main option you have is whether you want mercury or mechanical. This means they are very sensitive to changes in water level, which makes them great for high or low level alarms.ĭeciding which control switch to purchase is much easier. ![]() Narrow angle float switches on need to move 10 degrees to switch position. These switches are generally low amperage and what we call narrow angle. CONTROL DUTY FLOAT SWITCHESĬontrol switches are designed to connect to a control panel, mainly for high or low level alarms. ![]() While mercury switches are said to be more reliable, they are not allowed by law to be used in some states (see our website) and are only available in 13 amps. Mechanical switches have a ball bearing on a track that moves back and forth. Mercury switches use a small amount of mercury liquid to open and close the contacts. The last option that you have available is whether to use mercury or mechanical. This splice should be done in a control panel or waterproof junction box to ensure that the connection does not get wet and cause a short. Floats are all two wire so to install on a pump you must splice the float switch in the “HOT” line coming from the power source. Pump switches without a piggy-back plug must be hard wired, and this gets a little more complicated. That is all there to it, your pump will only come on when the float is in position to allow it. The plug on the float switch will plug-in to a power outlet, and then the pump will plug into the piggy-back outlet on the back of the float. If you purchase a float switch with a piggy-back plug the installation is very simple. Both of our pump duty and control duty switches come in mechanical and mercury activated styles. Our float switches come either with a piggy-back plug or without a plug. Control duty float switches are designed to be connected directly to a control panel to tell the control panel when to turn the pump on an off, or to signal the high level or low level alarm based upon the liquid level inside your tank. Once you determine which amperage float you need for you application a decision will need to be made about how this float will be installed. Our most popular floats come in the following levels: 13 amps, 15 amps, and 25 amps. Since the power for the submersible pump will be flowing through the float switch it will need to be able to at minimum handle that amperage. When choosing a float switch to control the operation of a pump, the first question that needs to be answered is about amperage. This is needed when controlling a pump because you have to be able to pump out a range of water and it also keeps the float from being interrupted by turbulence in the water. These are generally are wide angle which means they have to move 90 degrees to switch to the “ON” or “OFF” position. They can handle higher amperages than control switches. Pump switches are designed to control the operation of a submersible pump. CHOOSING THE CORRECT SEPTIC TANK FLOAT SWITCH PUMP DUTY FLOAT SWITCHES
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