30/50 Low Cut‑Off Pressure Switch (Model PSL3050)

The PSL3050 30/50 Low Cut‑Off Pressure Switch is a safety‑enhanced pump control device designed to regulate water pressure while protecting pumps from damage caused by low‑water or loss‑of‑pressure conditions. Preset to activate the pump at 30 PSI and shut it off at 50 PSI, this switch also features a low cut‑off function that automatically stops pump operation if system pressure drops to a critically low level.

Commonly used in residential and light commercial well systems, the PSL3050 helps maintain consistent water pressure while reducing the risk of pump burnout due to dry‑run conditions. Its dependable mechanical design and integrated safety feature make it an essential component for systems where water supply reliability is critical.

Key Features

• 30/50 PSI Pressure Control
  Factory‑set to start the pump at 30 PSI and stop it at 50 PSI for stable water delivery.

• Low Cut‑Off Protection
  Automatically shuts down the pump when pressure drops too low, helping prevent dry‑run damage.

• Manual Reset Function
  Allows controlled restart after low‑pressure shutoff once system conditions are restored.

• Automatic Pump Cycling
  Regulates pump operation based on real‑time system pressure.

• Durable Mechanical Construction
  Designed for long service life under repeated pressure cycles.

• Protective Enclosure
  Shields internal components from dust and incidental contact.

Product Description

The PSL3050 Low Cut‑Off Pressure Switch is engineered to provide both pressure regulation and critical pump protection. During normal operation, the switch maintains consistent water pressure by cycling the pump on and off between the preset 30 PSI cut‑in and 50 PSI cut‑out levels.

If system pressure drops unexpectedly—such as during a loss of water supply—the low cut‑off mechanism automatically shuts off the pump to prevent overheating and mechanical damage. Once the issue is resolved, the switch can be manually reset to resume normal operation, providing an added layer of safety and control.

This combination of pressure regulation and low‑pressure protection makes the PSL3050 ideal for applications where pump longevity and system reliability are a priority.

Manufacturer Specifications

• Product Type: Low cut‑off pressure switch
• Model Number: PSL3050
• Pressure Setting: 30 PSI cut‑in / 50 PSI cut‑out
• Safety Feature: Low pressure cut‑off with manual reset
• Operation Type: Automatic mechanical switch
• Function: Pump on/off control and dry‑run protection
• Adjustment: Adjustable within manufacturer limits
• Installation Location: Pressure tank or pump system
• Use Environment: Residential and light commercial water systems
• Housing: Enclosed for component protection

Recommended Applications

• Residential well pump systems
• Pressure tank installations
• Booster pump systems
• Shallow and deep well applications
• Replacement of standard pressure switches where added protection is desired
• Systems prone to water supply interruptions

Why Choose Model PSL3050

The PSL3050 30/50 Low Cut‑Off Pressure Switch offers reliable pressure control with the added benefit of pump protection. Its low cut‑off feature helps prevent costly pump damage, while its preset pressure range supports consistent water flow for everyday use. This switch is a smart choice for users who want enhanced system safety without sacrificing performance.