The United Electric Controls H121-358 is a heavy-duty electromechanical pressure switch from the 120 Series, designed for pressure monitoring, alarm, and control functions in demanding industrial and hazardous-location applications. The H121 configuration uses a single SPDT switch with external set-point adjustment and a reference dial.
Features
- 0–200 psi adjustable pressure range
- Rugged electromechanical pressure-switch design
- 316L stainless-steel bellows sensing element
- External set-point adjustment with reference dial
- Single SPDT switching contact
- 250 psi proof-pressure capability
- Type 4X enclosure for demanding environments
- Designed for hazardous industrial locations
- Reliable mechanical switching without dependence on a PLC or digital communication system
- Suitable for alarm, control and equipment-protection functions.
Typical Applications
- Pumps and compressors
- Turbines and rotating equipment
- Industrial pressure monitoring
- High/low pressure alarm systems
- Oil and gas processing
- Chemical processing systems
- Combustion equipment
- Process-control systems
- Equipment shutdown/interlock circuits
- Marine and offshore auxiliary systems
- Hydraulic and pneumatic systems
