Belkin ST4125D, ST6125D manual ST-4125D/ST-6125D Float Switches, Float Switch Theory

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ST-4125D/ST-6125D FLOAT SWITCHES

Float Switch Theory

Float Switch (Dual)

There is a tilt-sensitive mercury switch hermetically sealed within each float. As the liquid level (water) rises or falls, the float changes its angle until the mercury switch makes (close) or breaks (open) the circuit.

The length of cord between the float and point of attachment determines the amount of water to be pumped.

Contact Multiquip sales department to order float switches.

EXTERNAL 3-PHASE (230 OR 460 VOLT)

POWER SOURCE

 

CIRCUIT

 

BREAKER

L1

RED

 

WHITE

L2

BLACK

L3

GREEN

GROUND

Float switches (Figure 3) are used for the unattended operation of the submersible pump.The ST-4125D and ST-6125D pumps require the use of a control box to perform this function. Shown in Figure 3 is an example of a dual float control switch application.

The Models ST-4125D and ST-6125D submersible pumps require one each of the Model SW-1WOPA float type mercury switches.These switches have a pumping range level between 5.5~18 feet (1.67~5.5 meters). All float switch connections are bare wire (no plug). The ST-4125D/ST-6125D uses the CB12 control box for 230V and the CB14 control box for 460 V when float switches are required for the job application.

CONTROL

BOX

CAUTION!

HIGH

VOLTAGE!

LOWER

RESET

CB12/14

LIFTING

CHAIN

4 or 6-INCH

DISCHARGE

HOSE

POWER

CORD

PUMP

ON

FLOAT

SWITCHES

PUMP

OFF

SUPPORT

PLATFORM

ST-6125D

SUBMERSIBLE

PUMP

Figure 3. Dual Float Control Switch

PAGE 12 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08)

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Contents Submersible Pumps Model ST4125D Model ST6125D ST-4125D/ST-6125D Table of Contents Parts Ordering Procedures Best Deal! Order via Internet Dealers OnlyOrder via Fax Dealers Only Page ST-4125D/ST-6125D Safety Message Alert Symbols Foryour Safety and the Safety of OthersGeneral Safety ST-4125D/ST-6125D Rules for Safe OperationMaintenance Safety ST-4125D/ST-6125D Rules for Safe OperationEmergencies ST-4125D/ST-6125D Dimensions ST-4125D/ST-6125D Specifications SpecificationsST-4125D/ST-6125D General Information ST-4125D/ST-6125D Submersible Pump Components ST-6125DST-4125D/ST-6125D Float Switches Float Switch TheoryST-4125D/ST-6125D Control Boxes ThermalST-4125D/ST-6125D Control BOX Installation Phase Power Installation InputST-4125D/ST-6125D 230/460 VAC Voltage Selection 230/460VACVoltage SelectionST-4125D/ST-6125D Control Boxwiring Diagram Control Box Wiring DiagramST-4125D/ST-6125D 3-PHASE Power Installation PersonnelST-4125D/ST-6125D 3-PHASE Power Installation Three Phase Control Box/Pump System DiagramReset Manual-Off-Auto SW. Manual PositionST-4125D/ST-6125D Operation OperationPump Shut-Down/Clean-up ST-4125D/ST-6125D OperationST-4125D/ST-6125D Maintenance ST-4125D/ST-6125D -TROUBLESHOOTING Pump TroubleshootingST-4125D/ST-6125D Performance Curves Pump Performance CurvesPage Explanation of Code in Remarks Column NO. ColumnPart NO. Column QTY. ColumnST-4125D/ST-6125D Suggested Spare Parts Submersible Pump 1 to 3 UnitsST-4125D Submersible Pump Assy ST-4125D Submersible Pump Assy RemarksST-6125D Submersible Pump Assy ST-6125D Submersible Pump AssyCABLE, POWER, 24 MM ST-6125D Submersible Pump Assy Thermal Sensor Terms and Conditions of Sale Parts Freight PolicyPage HERE’S HOW to GET Help

ST6125D, ST4125D specifications

Belkin is renowned for producing high-quality networking and connectivity solutions, and their ST4125D and ST6125D models exemplify this commitment. The ST4125D is a 4-port USB hub, while the ST6125D serves as a versatile 6-port USB hub, both designed to enhance productivity and connectivity for users, especially in environments where multiple devices are used simultaneously.

One of the main features of the Belkin ST4125D and ST6125D is their ability to expand USB connectivity effortlessly. Each hub allows users to connect multiple devices to a single USB port, which is particularly useful for laptops and desktops that have limited ports. The ST4125D features four USB 3.0 ports, while the ST6125D includes six, making them perfect for connecting printers, external hard drives, and other peripherals without having to switch devices.

Another significant technology integrated into both models is USB 3.0, which offers data transfer speeds of up to 5 Gbps. This high-speed performance not only ensures rapid file transfers but also improves efficiency when moving large volumes of data. The backward compatibility with USB 2.0 devices also ensures that users can connect older peripherals without any issues, making these hubs highly versatile.

The design of the ST4125D and ST6125D hubs promotes convenience and ease of use. Their compact and lightweight form factor makes them portable, ideal for both home and office environments. Additionally, the hubs feature individual power switches for each port, granting users control over power management and enhancing energy efficiency.

Furthermore, both models boast an LED indicator for power status, providing real-time feedback to users. They also come equipped with a sturdy build quality, ensuring longevity and durability even with regular use. With plug-and-play functionality, setting up the hubs is hassle-free, requiring no additional drivers or software installation.

In conclusion, both the Belkin ST4125D and ST6125D USB hubs present excellent solutions for anyone seeking enhanced connectivity options. With their combination of speed, functionality, and user-friendly features, they are a valuable asset in today’s increasingly device-driven world. Whether for personal use, home offices, or larger business settings, these hubs stand out as reliable tools that meet diverse connectivity needs effectively.