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WATERLINE CONTROLS

Waterline Controls is a manufacturer of fluid level controllers designed for industrial and commercial liquid management. The product line centers on the WLC3000, WLC4000, WLC5000, and WLC6000 series, which provide fill, high alarm, and low alarm functions for tanks, sumps, and process vessels. These controllers are available in 120V AC and 220V AC versions, with power relay configurations ranging from one to four 30 A DPDT relays and two to five dry contacts. All units in this line carry a NEMA 4X enclosure rating, making them suitable for washdown and corrosive environments. Each controller includes probes—reference, fill start, or low alarm—depending on the model. The WLC3000 series handles basic fill operations with a single power relay. The WLC4000 series adds high alarm capability with two power relays. The WLC5000 series offers fill, high alarm, and low alarm functions with three power relays. The WLC6000 series provides the same three functions with four power relays and five dry contacts. These controllers are used in applications requiring reliable liquid level monitoring and control, such as water treatment, chemical processing, food and beverage production, and HVAC systems. 3G Electric supplies the Waterline Controls line as part of its industrial equipment catalog. The company stocks multiple SKUs, including the WLC3000-120VAC, WLC3000-220VAC, WLC4000-120VAC, WLC4000-220VAC, WLC5000-120VAC, WLC5000-220VAC, WLC6000-120VAC, and WLC6000-220VAC. 3G Electric provides logistics support and technical documentation to help buyers select the appropriate controller for their specific voltage, function, and relay requirements. The product pages include detailed specifications, such as NEMA rating, number of dry contacts, and power relay ratings, enabling procurement specialists and plant engineers to compare models directly. 3G Electric ships globally, serving customers in various industries that require fluid level control solutions. The company's catalog includes related equipment such as industrial burners, pumps, and gas controls, allowing for consolidated procurement. For the Waterline Controls line, 3G Electric maintains inventory and offers quote-based purchasing. The controllers are typically used in standalone level control panels or integrated into larger process systems. Installation requires matching the controller's voltage to the available power supply and selecting the appropriate probe configuration for the tank or vessel. The NEMA 4X rating ensures protection against dust, water, and corrosion, extending service life in harsh environments. Waterline Controls products are known for their robust construction and straightforward installation, with clear terminal markings and adjustable setpoints. The controllers are designed for continuous duty and can handle high-current loads directly through their 30 A relays, reducing the need for external contactors in many applications. 3G Electric's technical team can assist with model selection based on the number of functions required, voltage availability, and relay count. The company also provides access to datasheets and wiring diagrams to support integration. For buyers seeking a reliable fluid level controller with a NEMA 4X enclosure and high-current relay outputs, the Waterline Controls series is a practical option available through 3G Electric's global distribution network.

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About WATERLINE CONTROLS

Waterline Controls is a manufacturer of fluid level controllers designed for industrial and commercial liquid management. The product line centers on the WLC3000, WLC4000, WLC5000, and WLC6000 series, which provide fill, high alarm, and low alarm functions for tanks, sumps, and process vessels. These controllers are available in 120V AC and 220V AC versions, with power relay configurations ranging from one to four 30 A DPDT relays and two to five dry contacts. All units in this line carry a NEMA 4X enclosure rating, making them suitable for washdown and corrosive environments. Each controller includes probes—reference, fill start, or low alarm—depending on the model. The WLC3000 series handles basic fill operations with a single power relay. The WLC4000 series adds high alarm capability with two power relays. The WLC5000 series offers fill, high alarm, and low alarm functions with three power relays. The WLC6000 series provides the same three functions with four power relays and five dry contacts. These controllers are used in applications requiring reliable liquid level monitoring and control, such as water treatment, chemical processing, food and beverage production, and HVAC systems. 3G Electric supplies the Waterline Controls line as part of its industrial equipment catalog. The company stocks multiple SKUs, including the WLC3000-120VAC, WLC3000-220VAC, WLC4000-120VAC, WLC4000-220VAC, WLC5000-120VAC, WLC5000-220VAC, WLC6000-120VAC, and WLC6000-220VAC. 3G Electric provides logistics support and technical documentation to help buyers select the appropriate controller for their specific voltage, function, and relay requirements. The product pages include detailed specifications, such as NEMA rating, number of dry contacts, and power relay ratings, enabling procurement specialists and plant engineers to compare models directly. 3G Electric ships globally, serving customers in various industries that require fluid level control solutions. The company's catalog includes related equipment such as industrial burners, pumps, and gas controls, allowing for consolidated procurement. For the Waterline Controls line, 3G Electric maintains inventory and offers quote-based purchasing. The controllers are typically used in standalone level control panels or integrated into larger process systems. Installation requires matching the controller's voltage to the available power supply and selecting the appropriate probe configuration for the tank or vessel. The NEMA 4X rating ensures protection against dust, water, and corrosion, extending service life in harsh environments. Waterline Controls products are known for their robust construction and straightforward installation, with clear terminal markings and adjustable setpoints. The controllers are designed for continuous duty and can handle high-current loads directly through their 30 A relays, reducing the need for external contactors in many applications. 3G Electric's technical team can assist with model selection based on the number of functions required, voltage availability, and relay count. The company also provides access to datasheets and wiring diagrams to support integration. For buyers seeking a reliable fluid level controller with a NEMA 4X enclosure and high-current relay outputs, the Waterline Controls series is a practical option available through 3G Electric's global distribution network.

Common Applications

  • Water treatment — Waterline Controls WLC4000-120VAC for high alarm and fill stop in chemical storage tanks
  • Food and beverage — Waterline Controls WLC3000-220VAC for automatic filling of process vessels with NEMA 4X washdown protection
  • Chemical processing — Waterline Controls WLC6000-120VAC for low alarm monitoring in corrosive liquid sumps
  • HVAC systems — Waterline Controls WLC5000-220VAC for fill and alarm control in cooling tower basins
  • Power generation — Waterline Controls WLC4000-220VAC for high alarm in boiler feedwater tanks
  • Pharmaceutical — Waterline Controls WLC3000-120VAC for fill control in purified water storage with NEMA 4X enclosure

Guides & Resources

Frequently asked questions

Common questions about WATERLINE CONTROLS from 3G Electric.

What are the differences between the Waterline Controls WLC3000, WLC4000, WLC5000, and WLC6000 series?

The WLC3000 series provides basic fill control with one 30 A DPDT power relay and two dry contacts. The WLC4000 series adds high alarm functionality with two power relays and three dry contacts. The WLC5000 series includes fill, high alarm, and low alarm functions with three power relays and four dry contacts. The WLC6000 series offers the same three functions but with four power relays and five dry contacts. All series are available in 120V AC or 220V AC and feature a NEMA 4X enclosure. Selection depends on the number of control functions and relay outputs required for the application.

What is the NEMA 4X rating on Waterline Controls fluid level controllers?

NEMA 4X is an enclosure rating that indicates protection against dust, rain, splashing water, hose-directed water, and corrosion. Waterline Controls fluid level controllers are housed in NEMA 4X enclosures, making them suitable for washdown environments and areas exposed to corrosive liquids or vapors. This rating allows the controllers to be installed in food and beverage processing, chemical plants, and outdoor locations where moisture or cleaning agents are present. The enclosure material is typically a corrosion-resistant plastic or coated metal, and the rating applies when all covers and conduit entries are properly sealed.

Can Waterline Controls WLC4000-120VAC be used for both fill and high alarm?

Yes, the WLC4000-120VAC is configured for fill stop and high alarm functions. It operates on 120V AC and includes two power relays rated at 30 A DPDT, along with three dry contacts. The controller monitors liquid level and can stop a fill operation when the tank reaches a set point, while also triggering a high alarm if the level exceeds a second set point. This dual functionality makes it suitable for applications where overfill protection is required in addition to normal fill control. The unit includes a reference probe and is housed in a NEMA 4X enclosure.

What voltage options are available for Waterline Controls fluid level controllers?

Waterline Controls fluid level controllers are available in 120V AC and 220V AC versions. The voltage is indicated in the model number, such as WLC3000-120VAC or WLC3000-220VAC. The 120V AC models are typically used in North America and other regions with 120V supply, while the 220V AC models are used in Europe, Asia, and other areas with 220-240V supply. Both versions offer the same functions and relay configurations. It is important to match the controller voltage to the available power source to ensure proper operation and avoid damage.

How many dry contacts and power relays does the Waterline Controls WLC6000-220VAC have?

The WLC6000-220VAC has four power relays rated at 30 A DPDT and five dry contacts. It provides fill, high alarm, and low alarm functions and operates on 220V AC. The unit includes a reference probe and is housed in a NEMA 4X enclosure. The four power relays allow direct control of high-current loads, such as pumps or solenoid valves, without additional contactors. The five dry contacts can be used for remote indication, interlocking, or signaling to a PLC or alarm panel. This model is suitable for complex level control applications requiring multiple outputs.

What probes are included with Waterline Controls fluid level controllers?

The probes included depend on the model and its functions. The WLC3000 series includes a fill start probe or a reference probe. The WLC4000 series includes a reference probe. The WLC5000 series includes a fill stop probe or a low alarm probe. The WLC6000 series includes a reference probe. Probes are typically stainless steel or other corrosion-resistant materials and are designed to be mounted in the tank or vessel. The controller uses these probes to sense liquid level and activate the appropriate relays. Additional or replacement probes can be ordered separately. Installation instructions provide details on probe placement and wiring.