NEMA Air Pressure Switch – 4 Way, Single Phase, 20A, 12 Bar

The NEMA S-4100688 pressure switch is designed to automatically control the operation of single-phase air compressors by switching the motor on and off in response to air receiver pressure. Country of origin: ITALY

Suitable for most direct-drive and belt-driven single-phase piston compressors, this 4-way pressure switch features one 1/4" BSP inlet connection and three additional 1/4" BSP ports for connecting accessories such as a pressure gauge, safety valve and pressure regulator.

Fitted with a manual pull-type switch mechanism and a 6mm unloader valve connection, this unit provides reliable automatic compressor pressure control. Rated for up to 12 bar and equipped with 20A electrical contacts.

Key Features

• Suitable for single-phase air compressors.

• Automatic compressor start and stop control.

• Four-way connection configuration.

• Three additional 1/4" BSP accessory ports.

• Manual pull-type switch operation.

• Integrated 6mm unloader valve connection.

• Maximum pressure rating of 12 bar.

• 20A electrical contact rating.

• Supplied with fittings as pictured.

Specifications

• Manufacturer: NEMA ITALY

• Product Type: Air Compressor Pressure Switch

• Phase: Single Phase

• Voltage: 230V

• Current Rating: 20A

• Frequency: 50–60Hz

• Maximum Pressure: 12 Bar

• Number of Ways: 4

• Number of Poles: 2

• Inlet Connection: 1/4" BSP

• Auxiliary Connections: 3 × 1/4" BSP

• Switch Type: Pull

• Unloader Valve Connection: 6mm

• Overload Protection: None