Core Features Diaphragm Design for Medium-Pressure Liquid Sensing: Functions as a precision micro pressure switch engineered to monitor medium-pressure non-corrosive liquids, featuring a nitrile rubber diaphragm that provides accurate detection across a 2–15 bar (29–217.5 psi) range. This design balances sensitivity to pressure fluctuations with resistance to liquid exposure, making it ideal for industrial fluid systems, hydraulic control, and water management applications. Adjustable Setpoints with Secure Locking: Equipped with a precision adjustment screw to set actuation pressure within the range, with a differential (deadband) of 0.8–2.0 bar (11.6–29 psi) to prevent rapid cycling. A locking nut secures the setpoint, preventing drift from vibration or accidental adjustment—critical for maintaining stability in systems where pressure consistency is essential (e.g., hydraulic clamping, water distribution). Liquid-Specific Compatibility: The nitrile diaphragm and brass wetted parts ensure compatibility with water, mineral oils, coolants, and other non-corrosive liquids, making it suitable for diverse applications from machine tool cooling systems to industrial washing equipment. SPDT Contacts for Flexible Control: Features single-pole double-throw (SPDT) contacts (1 NO + 1 NC) rated for AC 250V (3A resistive) and DC 30V (1.5A resistive). This configuration supports: Triggering high/low pressure alarms via the NO contact (e.g., in boiler safety systems). Controlling small pumps or valves through the NC contact to maintain optimal pressure. Sending pressure status signals to PLCs in automated fluid management systems. Compact, Durable Housing: Housed in a glass-reinforced thermoplastic housing (UL94 V-0) with a space-efficient footprint (34mm × 24mm × 20mm) and lightweight design (25g), suitable for installation in dense machinery or tight enclosures where larger pressure switches cannot fit. Dust-Resistant Protection: Meets IP40 protection (IEC 60529) to shield internal components from dust and particulate matter, ensuring reliability in factory floors, automotive assembly lines, and material handling facilities. Simplified Installation: Designed for panel mounting via two M2.5 screws, with a 1/8-inch NPT female port for liquid connections. The terminal block uses screw-type connections accepting 0.5–1.5mm² solid/stranded wires, ensuring secure wiring in vibration-prone setups. Typical Applications The ALCO Switch MPA406N is engineered for medium-pressure liquid monitoring in compact industrial systems, with core use cases including: Machine Tool Cooling Systems: Installed in CNC machines or lathes to monitor coolant pressure, ensuring proper lubrication and preventing tool damage from inadequate flow. Hydraulic Clamping Devices: Used in small hydraulic clamping systems (e.g., in metalworking) to detect pressure levels, ensuring secure workpiece holding during machining. Industrial Washing Equipment: Deployed in pressure washers or parts cleaners to maintain optimal operating pressure, balancing cleaning effectiveness with equipment safety. Water Distribution Systems: Integrated into small-scale water treatment or irrigation systems to monitor line pressure, preventing pipe damage from overpressurization. Automotive Test Rigs: Installed in vehicle component testing equipment to monitor fluid pressure in brake lines, cooling systems, or transmission circuits.