Safe Signal EPS120-1 Pres Switch 120PSI SPDT
The Safe Signal EPS120-1 is a supervisory pressure switch with one SPDT contact, used to supervise system air pressure in pipes or pressure tanks and the air or water pressure supplies of automatic water control valves. It is adjustable from 10 to 200 psi with a tool-free adjustment wheel and is factory set for a nominal 115 psi system, responding at 105 psi on decreasing pressure. The enclosure is rated UL 4X / NEMA 4 for indoor or outdoor use.
Key Features
- Low-pressure supervisory switch, one SPDT (Form C) contact
- Field-adjustable from 10 to 200 psi with a pressure adjustment wheel - no special tools
- Factory set to operate at 105 psi on decreasing pressure (nominal 115 psi system)
- Reinforced diaphragm resists pressure spikes
- Two conduit entrances (one knockout, one open hole for 1/2 in conduit fittings)
- UL 4X / NEMA 4 enclosure with tamper-resistant cover screws
- UL and ULC listed, FM approved
- Optional cover tamper switch P/N 546-8000
Specifications
| Contacts |
One set SPDT (Form C) |
| Contact ratings |
10.0 A, 1/2 HP @ 125/250 VAC; 2.5 A @ 6/12/24 VDC |
| Adjustment range |
10 to 200 psi |
| Factory setting |
Operates at 105 psi on decreasing pressure |
| Maximum operating pressure |
300 psi |
| Differential |
Approx. 3 psi @ 10 psi, 9 psi @ 200 psi |
| Pressure connection |
1/2 in NPT male |
| Operating temperature |
-40°F to 160°F (-40°C to 71°C) |
| Enclosure |
UL 4X, NEMA 4, indoor or outdoor use |
| Dimensions |
5.120 in H x 3.325 in W x 4.250 in L (13.0 x 8.4 x 10.8 cm) |
| Shipping weight |
1.2 lb (0.54 kg) |
| Warranty |
3 years |
Compatible With
- Sprinkler system air pressure in pipes or pressure tanks
- Water or air pressure supplies of automatic water control valves
- Fire alarm control panel supervisory circuits
Documents & Downloads
