Noshok
300 Series Compact SPDT Mechanical Switch With Adjustable Hysteresis
300 Series Compact SPDT Mechanical Switch With Adjustable Hysteresis
Key Features
- 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
Application:
- Hydraulic systems
- Industrial machinery or machine tools
- Stamping and forming presses
- Pumps and compressors
SPECIFICATIONS | |
Adjustment ranges | 3 psig to 30 psig through 450 psig to 4,600 psig |
Measuring element | NBR diaphragm < 225 psig; Steel piston with NBR seal > 225 psig |
Media | Diaphragm type, compressed air or not corrosive liquids Piston type, self lubricating fuids 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) |
Electrical connection | Hirschmann (DIN EN 175301-803) |
Environmental protection | NEMA 4:IP65 |
Weight | Approximately 0.2 lb |