Description
The United Electric J402K-S157B-M210 pressure switch is a rugged, weatherproof control designed for reliable pressure monitoring in HVAC, compressor, and industrial applications. Featuring an adjustable setpoint range of 10 to 100 PSI, this switch provides dependable performance for system cycling, alarm activation, and safety shutdown functions. The unit is equipped with a 1/2" NPT pressure connection for standard piping compatibility and ease of installation. Built with a weatherproof enclosure, it is suitable for outdoor and harsh environmental conditions where protection against moisture and contaminants is required. This model is commonly used in air systems, pump control, and general industrial pressure applications.
Key Features
- Adjustable pressure range: 10–100 PSI
- 1/2" NPT pressure connection for standard system integration
- Weatherproof enclosure for outdoor and harsh environments
- Designed for HVAC, compressor, and industrial applications
- Durable construction for long-term reliability






