Potter Electric PS40-2 Pressure Supervisory Switch

Product Description

The Potter Electric Signal Co. US PS40-2 is a pressure supervisory switch designed to monitor water pressure in fire suppression and wet-pipe sprinkler systems. It signals a supervisory condition when system pressure rises above or falls below a preset threshold, alerting monitoring panels before a fault becomes a failure. The PS40-2 is a field-installed device typically handled by licensed fire protection contractors or sprinkler system technicians during system commissioning or service calls.

The PS40-2 is used in waterflow equipment applications, primarily within commercial and residential fire suppression systems where continuous pressure supervision is required. It is suited for wet-pipe sprinkler installations that feed into a central fire alarm control panel. The switch activates a supervisory signal at the panel when pressure moves outside the monitored range, supporting code-compliant system oversight.

Key Features

• Monitors system pressure to detect supervisory conditions in fire suppression piping
• Triggers a supervisory signal when pressure deviates from the acceptable operating range
• Designed for waterflow equipment category applications in sprinkler system installations
• Single-unit packaging for straightforward field replacement or new installation

Compatibility

Designed as an OEM-style supervisory pressure switch for use in fire suppression and wet-pipe sprinkler system installations requiring pressure monitoring at the panel level.

Installation Notes

Installation should be performed by a licensed fire protection contractor in accordance with NFPA 13 and local authority having jurisdiction requirements. Shut down and depressurize the affected system section before removing or installing the switch. Verify all wiring connections to the fire alarm control panel comply with NFPA 72 low-voltage wiring requirements. Perform a functional supervisory signal test after installation to confirm proper operation before returning the system to service.