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ALARM / SUPERVISORY PRESSURE SWITCHES
- EPS10-2 Supervisory Pressure Switch Single Circuit
- EPS40-1 Alarm Pressure Switch Two Circuits
EPS10-2 Supervisory Pressure Switch Single Circuit
The EPS10-2 is a field-adjustable pressure switch designed to monitor air, water, or supervisory pressure in fire sprinkler systems. It features two independently wired SPDT (Form C) contacts, making it suitable for both alarm and supervisory functions. The switch activates when system pressure rises or falls to a set threshold, sending a signal to the fire alarm control panel.
Built for durability and reliability, the EPS10-2 comes in a rugged, corrosion-resistant NEMA 4 enclosure for indoor or outdoor use. It is UL Listed and FM Approved for fire protection service, ensuring compliance with NFPA standards.
Key Features:
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Adjustable pressure range: 10 to 300 psi
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Two SPDT (Form C) contacts for multiple monitoring functions
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Suitable for alarm and supervisory applications
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NEMA 4 weatherproof enclosure
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Compatible with all listed fire alarm control panels
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UL Listed and FM Approved for fire sprinkler systems
EPS40-1 Alarm Pressure Switch Two Circuits
The EPS40-1 is a field-adjustable pressure switch specifically designed for use on wet fire sprinkler system risers. It detects a pressure increase when water flows in the system and provides an electrical signal to the fire alarm control panel. The unit includes one SPDT (Form C) contact for alarm activation and is factory-set for reliable waterflow detection.
Housed in a rugged, corrosion-resistant NEMA 4 enclosure, the EPS40-1 is built for both indoor and outdoor applications. It is UL Listed and FM Approved for fire protection service, ensuring compliance with NFPA standards.
Key Features:
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Pressure range: 4 to 20 psi (factory-set at 10 psi)
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One SPDT (Form C) contact for alarm function
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Designed for wet sprinkler riser installations
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NEMA 4 weatherproof enclosure
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Reliable operation in demanding environments
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UL Listed and FM Approved for fire sprinkler systems
PRESSURE SWITCH COMPARISON CHART
| Feature | EPS10-2 | EPS40-1 |
|---|---|---|
| Application | Supervisory pressure monitoring (air, water, or pressure maintenance in dry, pre-action, or deluge systems) | Waterflow alarm switch (wet sprinkler riser pressure detection) |
| Pressure Range | 10 – 300 psi (field adjustable) | 4 – 20 psi (factory set at 10 psi, field adjustable) |
| Contacts | Two SPDT (Form C), independently wired | One SPDT (Form C) |
| Primary Use | Supervisory or alarm functions | Alarm activation on waterflow |
| Enclosure | NEMA 4, corrosion-resistant for indoor/outdoor use | NEMA 4, corrosion-resistant for indoor/outdoor use |
| Listings & Approvals | UL Listed, FM Approved | UL Listed, FM Approved |
| Typical Location | System piping, air supplies, or supervisory points | Wet sprinkler risers |
| Fire Alarm Panel Integration | Sends supervisory/alarm signals for abnormal pressure | Sends alarm signal for waterflow condition |
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