Feature Highlights: 1. Dual-Purpose Pressure Switch – Designed for air compressors, this 4-port switch operates within a 140–175 PSI range, making it ideal for workshop, garage, or industrial applications. 2. Built to Last – Made from durable metal with a black finish, it resists wear and handles high-pressure environments reliably. 3. Easy Installation & Use – Features four 1/4-inch female NPT ports for straightforward plumbing connections. The included unloader valve helps release trapped air, reducing strain on your motor. 4. Safety-First Design – Rated for 26 amps max. Always ensure your electric motor’s amp rating is lower than the switch’s maximum to prevent overload. 5. Clear Performance Settings – Minimum on pressure: 50 PSI; differential range: 30–40 PSI. This allows you to fine-tune your compressor’s cycling to match your needs. Product Details: This heavy-duty pressure switch is built from robust metal and comes pre-equipped with an unloader valve for smoother compressor operation. It supports both single-phase and three-phase systems (110V/230V/460V) and is rated for up to 26 amps. With four 1/4-inch female NPT ports, installation is quick and tool-free. Perfect for maintaining consistent air pressure in workshops, garages, or production setups. Specifications: - Color: Black - Material: Metal - Pressure Range: 140–175 PSI - Max Pressure: 175 PSI - Min On Pressure: 50 PSI - Differential: 30–40 PSI - Ports: 4 x 1/4-inch female NPT - Pole: 2 Pole - Amp Rating: 26A max - Voltage Compatibility: Single/Three Phase (110V/230V/460V) - Package Includes: 3 x Pressure Switch Note: - Only the items listed above are included. - Slight color variations may occur due to lighting or screen differences. - Allowable measurement tolerance: +/- 1–3 cm.