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400 Series Heavy-Duty Mechanical Switch

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Wastewater
  • Switch adjustment ranges from vacuum through 4,600 psig depending on model
  • Standard zinc-plated Steel with NBR diaphragm (< 225 psig); Steel piston with NBR seal (> 225 psig) wetted parts
  • SPDT snap-action switch
  • CE compliant to suppress RFI, EMI and ESD
  • RoHS compliant

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SERIES 400V 400 Vacuum Series 400H 400 High Pressure Series  
400L 400 Low Pressure Series      
SWITCH FUNCTION 3 Single Pole Double Throw (SPDT)      
PROCESS CONNECTION 2 1/4" NPT male 19 G 1/4 B female  
5 1/4" NPT female 45 7/16-20 SAE Male, Non-Adjustable  
10 G 1/4B      
400V VACUUM PRESSURE SWITCH ADJUSTMENT RANGES (Max. working pressure) 5/25-vac -5 inHg to -25 inHg (350 psig)      
400L LOW PRESSURE SWITCH ADJUSTMENT RANGES (Max. working pressure) 3/30 3 psig to 30 psig (870 psig) 15/230 15 psig to 230 psig (870 psig)  
7/120 7 psig to 120 psig (870 psig)      
400H HIGH PRESSURE SWITCH ADJUSTMENT RANGES (Max. working pressure) 145/435 145 psig to 435 psig (5,000 psig) 300/2900 145 psig to 2,320 psig (5,000 psig)  
145/1160 145 psig to 1,160 psig (5,000 psig) 300/3600 300 psig to 2,900 psig (5,000 psig)  
145/1750 145 psig to 1,750 psig (5,000 psig) 450/4600 300 psig to 3,600 psig (5,000 psig)  
145/2320 145 psig to 2,320 psig (5,000 psig)      
ELECTRICAL CONNECTIONS† 1 36" Cable attached to option 8 25 M12 x 1 4-Pin*  
8 Hirschmann (DIN EN 175301-803 Form A) 46 Hirschmann with LED Status Indicator  
OPTIONS *** EP EPDM Diaphragm (-40/212 °F) VT FKM Diaphragm (0/212 °F)  
HNBR Low Temp NBR (-40/176 °F)      

Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.

* Available in adjustment ranges to 225 psig
† Other electrical connections available, consult factory

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SPECIFICATIONS
Switching parameters    
    Function
    Contact rating
  
    Repeatability
 
    Hysteresis
    Contact material
    Frequency

SPST or SPDT snap-action micro switch
6A @ 125/250 Vac
6A @ 12/24 Vdc
±2% of full scale of adjustment range
Diaphragm type, 1% to 11% of adjustment range full scale
Piston type, 2% to 8% of adjustment range full scale
Solid Silver, self-cleaning
Max. 200 cycles/min
Pressure ranges 0 psig to 300 psig through 0 psig to 5,000 psig
Adjustment knob from 3 psig to 4,600 psig dependent on full scale range
Service life >1,000,000 load cycles
Temperature ranges Media -4 °F to 176 °F (-20 °C to 80 °C)
Ambient -4 °F to 176 °F (-20 °C to 80 °C)
Storage -13 °F to 185 °F (-25 °C to 85 °C)
Proof pressure 300 psi or 5,000 psi depending on adjustment range
Measuring element NBR diaphragm ≤ 230 psig
Stainless Steel piston with NBR seal ≥ 500 psig
1/4″ NPT and 7/16-20 SAE zinc-plated Steel connections standard,
others available on request
Housing material Zinc die-cast
Environmental rating IP65 for Hirschmann
IP67 for M12 x 1
Shock 30 g’s according to IEC 60068-2-27
Vibration 10 g’s according to IEC 60068-2-6
Weight Approximately 0.66 lb

Options & Accessories

NOSHOK's Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.

View NOSHOK Distribution Manifolds

  • Factory Adjusted Switch Point (Specify)
  • Resist clogging and are self-cleaning
  • Five different sized pistons included with each snubber to ensure the correct amount of snubbing for virutally every application
  • Available in Brass and 316 Stainless Steel in 1/4" NPT, 1/2" NPT or SAE J1926-3: 7/16-20
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2"​​​​​​

Specifications

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Cost effective solution to protect expensive instrumentation
  • Increases gauge readability by smoothing out pressure surges, pulsations and spikes
  • 5 basic elements available for each snubber to accommodate specific application needs
  • Snubbing action achieved by utilizing a corrosion resistant 316 Stainless Steel sintered porous element
  • Exotic materials or intermediate disc grades available
  • Provides long service life with no moving parts to wear out
  • Weight approximately 0.2 lb. for 1/4" & 7/16", and approximately 0.4 lb. for 1/2

Specifications

Dimensions

Replacement Disc Options

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Protect the instrument from the damaging effects of high temperature steam
  • Recommended for use in all steam applications
  • Available in 1/4" and 1/2" NPT sizes in welded steel, welded 316 Stainless Steel or seamless 316 Stainless Steel with ratings to 3,800 psi @ 850 ºF

Specifications

Dimensions

Steam Syphons Temperature 1/4" NPT vs. Pressure charts

Steam Syphons Temperature 1/2" NPT vs. Pressure charts

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Temperature ratings: 15,000 psi @ 200 °F and 3,000 psi @ 1,000 °F
  • Used with gauges and gauge valves to adjust the line of sight
  • Rotates 360° to allow the connected instrument to be positioned in the desired direction
  • The pressure connection is achieved with a tapered cone style compression fitting simply by tightening the swivel hex nut
  • All 316 Stainless Steel construction
  • Standard with 1/2" NPT male process – 1/2" NPT female instrument connections
  • Also available with 1/4" NPT connections, same specifications apply
  • Weight approximately 0.8 lb.

Swivel Adaptor Dimensions


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov