Pressure Mechanical Compact SPDT Switch with Adjustable Hysteresis 300 SERIES * Ranges available from 3 psig to 30 psig through 450 psig to 4,600 psig * Rugged zinc-plated steel housing and process connection * Proven diaphragm or piston type sensing technology provides excellent reliability, repeatability, and affordability * Micro switch contacts are silver plated for extended service life and exceptional dependability * Switching functions are field adjustable while under pressure * SPDT single changeover contact configuration * Hirschmann electrical connection * RoHS compliant SPECIFICATIONS Adjustment ranges Measuring element Media FEATURES Measuring ranges from 3 psig to 30 psig through 450 psig to 4,600 psig Field adjustable switching point Diaphragm or piston type sensing element Micro-switch technology Hirschmann electrical connection APPLICATIONS Hydraulic systems Industrial machinery and machine tools Stamping and forming presses Pumps and compressors 58 3 psig to 30 psig through 450 psig to 4,600 psig NBR diaphragm < 225 psig; Steel piston with NBR seal > 225 psig Diaphragm type, compressed air or not corrosive liquids Piston type, self lubricating fluids such as hydraulic oil or grease Process connection 1/4 NPT standard, others available on request Connection material Zinc-plated steel, optional stainless steel or brass Case Zinc-plated steel Switching function SPDT, micro switch with silver-plated contacts, gold-plated contacts available on request Maximum working pressure Diaphragm type: 870 psi; Piston type: 5,000 psi Hysteresis Adjustable, 10-30% depending on switch point Repeatability 2% of full scale adjustment range Contact rating Up to 28 Vdc 2A Up to 125 Vac 4A Up to 250 Vac 4A Switch frequency Max. 100 cycles/min Durability >1,000,000 cycles Temperature ranges Storage -4 F to 176 F (-20 C to 80 C) Media -4 F to 176 F (-20 C to 80 C) Ambient -4 F to 176 F (-20 C to 80 C) Hirschmann (DIN EN 175301-803) Electrical connection NEMA 4:IP65 Environmental protection Weight Approximately 0.2 lb. Special Note: RoHS compliant 300 SERIES ORDERING INFORMATION DIMENSIONS WIRING DIAGRAMS ELECTRICAL CONNECTIONS ORDERING INFORMATION SERIES SWITCH FUNCTION PROCESS CONNECTION ADJUSTABLE RANGES (Max. working pressure) 300 1 2 3/30 7/115 Single changeover contact, SPDT 1/4 NPT Male 3 psig to 30 psig (870 psig) 7 psig to 115 psig (870 psig) 150/1700 150 psig to 1,700 psig (5,000 psig) 150/2300 150 psig to 2,300 psig (5,000 psig) 15/225 15 psig to 225 psig (870 psig) 300/2900 300 psig to 2,900 psig (5,000 psig) 150/425 150 psig to 425 psig (5,000 psig) 300/3600 300 psig to 3,600 psig (5,000 psig) 150/1150 150 psig to 1,150 psig (5,000 psig) 450/4600 450 psig to 4,600 psig (5,000 psig) ELECTRICAL CONNECTIONS 1 36 Cable (connected to option 8) 8 Hirschmann (DIN EN 175301-803 form A) Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information. 300 EXAMPLE - 1 - 2 - 15/225 - 8 Additional Ordering Information Switch Set Point(s) (please specify) Series ........................................................300 Switch function ...Single changeover contact Process connection ...............1/4 NPT Male Adjustable range .............15 psig to 225 psig Electrical connection .................Hirschmann Outline Dimensions 1.97" (50 mm) Switching Output Schematic 2 / WHT 3 / RED 1.06" sq. (27 mm) 1 / BLK P 1.10" (28 mm) Switch Function Hysteresis Function 1.13" (44.5 mm) psi psi 1.0625" HEX (27 mm) 0.47" (12 mm) 1 2 1/4" NPT 1.06" (27 mm) 3 59