SJE-RHOMBUS

SJE-Rhombus is a manufacturer of liquid level controls, pump control panels, and alarm systems for water and wastewater applications. The company was formed through the merger of S.J. Electro Systems and Rhombus Technologies, and its product line is widely used in residential, commercial, and industrial pumping systems. SJE-Rhombus devices are commonly specified for sump, sewage, effluent, and water transfer applications where reliable level sensing and pump activation are required. The product families include float switches, control panels, level alarms, and pump controllers. Float switches are available in tether and narrow-angle configurations, with normally open or normally closed contacts, and are rated for 120/230V AC at 5 A. Control panels are offered in simplex and duplex configurations, for single-phase 120/208/240V AC systems, with current ranges from 0 to 12 A, 7 to 15 A, and 9 to 20 A. Many panels carry a 4X enclosure rating, indicating suitability for indoor or outdoor use where hose-directed water and corrosion resistance are needed. Dosing schedules include demand dose and timed dose, and alert outputs may be audio or visual. 3G Electric supplies SJE-Rhombus products globally, with 229 SKUs listed in its catalog. Each product page includes datasheets, specifications, and part numbers to support technical evaluation. 3G Electric serves plant engineers, maintenance managers, and procurement specialists who need to specify or replace level control and pump control components. The catalog includes general-purpose tether float switches, such as the Sensor Float Mini series, and multi-purpose pump control panels, including the NEX series. These products are used in sump, sewage, effluent, and water transfer systems. 3G Electric provides global logistics and quote-based ordering for SJE-Rhombus products. The company does not manufacture these products; it distributes them and provides technical documentation to assist with selection. For buyers, the key considerations are contact configuration (normally open or normally closed), voltage and current ratings, enclosure type, and mounting requirements. SJE-Rhombus float switches often require a pipe clamp for mounting, and some models include a cable weight. Control panels may include switches, alarms, and dosing schedules. 3G Electric maintains a catalog of these products with detailed specifications to support procurement and engineering teams. The product range covers common voltages and current ratings used in pump control applications. 3G Electric ships globally, and the catalog is accessible online for specification review. For specific applications, buyers should verify compatibility with their pump and panel requirements. 3G Electric does not provide engineering design services; it supplies components and documentation. The SJE-Rhombus line is one of several brands available through 3G Electric, which focuses on industrial equipment for fluid handling and control. This profile is intended to provide a factual overview of the SJE-Rhombus product families and how 3G Electric supports their supply.

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BrandSJE-RHOMBUS

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About SJE-RHOMBUS

Common Applications

Residential sump pump systems — Sensor Float Mini tether float switch, normally open, 120/230V AC, 5 A
Commercial sewage ejector systems — Duplex control panel, single-phase 120/208/240V AC, 0 to 12 A, demand dose
Wastewater treatment plant effluent pumping — Simplex control panel, 120/208/240V AC, 0 to 12 A, audio alert
Industrial water transfer — General-purpose tether float switch, normally closed, 120/230V AC, 5 A, with pipe clamp
Stormwater management — Duplex control panel, single-phase 120/208/240V AC, 9 to 20 A, visual alert
Lift station pump control — Duplex control panel, single-phase 120/208/240V AC, 7 to 15 A, timed dose

Frequently asked questions

Common questions about SJE-RHOMBUS from 3G Electric.

What are the typical voltage and current ratings for SJE-Rhombus float switches?

SJE-Rhombus general-purpose tether float switches, such as the Sensor Float Mini series, are commonly rated for 120/230V AC and 5 A. They are available in normally open (pump down) and normally closed (pump up) configurations with 2-wire connections. These switches are used for liquid level control in sump, sewage, and effluent applications. Mounting typically requires a pipe clamp, and some models include a cable weight. Buyers should confirm the specific model's ratings and contact configuration for their application.

What is the difference between demand dose and timed dose on SJE-Rhombus control panels?

SJE-Rhombus multi-purpose pump control panels may feature either demand dose or timed dose dosing schedules. Demand dose activates the pump based on liquid level reaching a set point, while timed dose operates the pump at preset intervals regardless of level. The choice depends on the application's flow characteristics and regulatory requirements. Panels with demand dose are common in residential and commercial wastewater systems, while timed dose may be used in systems with variable inflow. Buyers should review the panel specifications to confirm the dosing schedule.

What does a 4X rating mean on SJE-Rhombus control panels?

A 4X rating on SJE-Rhombus control panels indicates the enclosure is designed to protect against hose-directed water, rain, sleet, snow, and corrosion. This rating is defined by NEMA and applies to indoor or outdoor use where the equipment may be exposed to moisture. Panels with 4X enclosures are suitable for wastewater treatment, sump, and sewage applications where washdown or weather exposure is a concern. The rating does not imply suitability for submersion. Buyers should verify the specific panel's enclosure rating and installation environment.

Can SJE-Rhombus control panels be used with both simplex and duplex pump systems?

Yes, SJE-Rhombus offers control panels for both simplex (single-pump) and duplex (two-pump) systems. Simplex panels control one pump, while duplex panels alternate or operate two pumps based on level or demand. Duplex panels often include additional features such as alternation, alarm outputs, and multiple switches. The panels are available for single-phase 120/208/240V AC systems with various current ranges. Buyers should select the panel that matches their pump configuration and electrical requirements.

What mounting accessories are required for SJE-Rhombus float switches?

SJE-Rhombus general-purpose tether float switches typically require a pipe clamp for mounting to a discharge pipe or rigid support. Some models include a cable weight to maintain the float's position and prevent tangling. The specific accessory depends on the model and application. For example, the Sensor Float Mini series may include a pipe clamp or cable weight as indicated in the product specifications. Buyers should review the product datasheet to determine the required mounting hardware for their installation.

What types of alert outputs are available on SJE-Rhombus pump control panels?

SJE-Rhombus multi-purpose pump control panels may include audio or visual alert outputs. Audio alerts typically use a buzzer or horn, while visual alerts use an indicator light. Some panels offer both. These alerts notify operators of high liquid level, pump failure, or other fault conditions. The specific alert type varies by model and series, such as the NEX series. Buyers should check the panel specifications to confirm the alert output type and whether it meets their monitoring requirements.