Features
● UL LISTED
● VIBRATION RESISTANT
● NEMA 3 RAINTIGHT
● ADJUSTABLE SETTING
● UNIQUE UNION
Application
Model 8253 Temperature Switches are ruggedly constructed and have precise set point adjust-ments for use where reliable monitoring of critical tempera-ture conditions such as high water or oil temperature is necessary in engine installations or other high or low temperatures in heavy duty industrial applications.
Operation
Vibration Resistant - Model 8253 Temperature Switches are specifically designed for use on vibrating equipment such as heavy duty engine, compressor, pump and other industrial applications. They are suitable for control, safety and warning systems on both mobile and stationary en-gines, generator sets, irrigation and sprinkler systems, air and gas compressors, turbines, pumps, marine systems, machine tools, injection molding machines, etc.
U.L. LISTED - NEMA 3 Raintight housing is precision cast aluminum with baked enamel finish.
Snap action switching is provided by vibration resistant snap switches to operate electrical alarm or shut down circuits. The Snap switch has single pole double throw (SPDT) contacts so the switch can be used either normally open (N.O.) or normally closed (N.C.). The high capacity contacts are suitable for AC or DC current loads.
RANGES - Temperature sensing is by reliable and long life expanding wax elements. Temperature settings are avail-able in 5ûF increments from 65ûF to 250ûF. Switching levels are fully adjustable within temperature ranges avail-able.
UNIQUE UNION - A unique union nut connects the switch housing to the temperature sensor allowing the sensor to be installed in tight quarters or the switch to be easily swiveled to align with conduit connections. Once tight-ened, it provides a rigid connection between the switch and the sensor well
Specifications
Certifications .................................... U.L. Listed, Nema 3
Housing Material ..................... Precision Cast Aluminum
Internal Parts........................ Stainless and Plated Steels
Temperature Element Materials ......... Bronze and Brass
Maximum Pressure on Element ....... 800 psi (5510 kPA)
Maximum Pressure on Well* ....... 5000 psi (37,900 kPA)
Vibration .............................. resistant up to 4G at 100 Hz
Switch Ratings....SPDT ...... 125/250/460 VAC - 15 amp
.................................................... 125 VDC - 1/2 amp
.................................................... 250 VDC - 1/4 amp
......................................................... 30 VDC - 5 amp
....................................................... 15 VDC - 15 amp
Net Weight ......................................... 0.83 lbs. (0.38 kg)
|