Madison Company

M4300 Series

M4300 Series

Applications

• Detects high/low levels in a container
• Materials typically used for hydrocarbon based liquids
• All NPT vertical switches can be extended with pipe to meet custom tank depths

Specifications

• Approvals: CE, UL, CSA
• Float/Stem Material: Buna-N/Brass
• Float Diameter: 1.25”
• Minimum Media SG: 0.56
• Lead Wires: 24”, 22 AWG, MTW insulated
• Max. Pressure: 150 psi
• Max. Temperature: 221˚F, 105˚C
• Mounting: 1/4” NPT
• Slosh Shield: None
• Notes: Electrical Switch Ratings are shown for resistive loads as tested by UL at different voltages. See Electrical Considerations section for typical inductive or capacitive load considerations.

Electrical Considerations

When using Madison level switches, it is important to consider the application’s electrical parameters. Our level switches utilize reed switch technology, which are glass encapsulated, magnetically actuated switches. Madison generally provides electrical ratings for resistive loads; however, where the maximum current of the load permits, the switches are capable of controlling devices such as motors, solenoids or coils that produce capacitive or inductive electrical loads. Where possible, Madison recommends the use of general-purpose/isolation relays or controllers to protect the switch.

Protection Techniques and Common Failure Modes

Reed Switch protection is the most successful method of increasing the performance and life of your level sensor. Since every application varies, it is important to understand your protection options. The life of the reed switch is typically 1 million cycles, within rated load conditions. The table below is a guide to suggested protection techniques and common failure modes associated with each load type.