NOSHOK 400H-3-2-450/4600-8 Mechanical Block Switch 1/4 NPT Male Hirschmann Conn
- 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
List Price $171.57 Original price was: $171.57.$144.20Current price is: $144.20.
45 in stock
NOSHOK 400H-3-2-450/4600-8 Mechanical Block Switch 1/4 NPT Male Hirschmann Conn
- 400 Series Mechanical Heavy-Duty Pressure Switch, 1 SPDT Switch, 1/4 NPT Male, 450 psig to 4,600 psig (5,000 psig), Hirschmann
| 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) |
* Available in adjustment ranges to 225 psig
† Other electrical connections available, consult factory
NOSHOK’s Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.

Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.
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NOSHOK
| SPECIFICATIONS | |
| Switching parameters Function Contact rating Repeatability Hysteresis Contact material Frequency |
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 DIN EN 175301-803 Form A 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 |
Description
NOSHOK 400H-3-2-450/4600-8 Mechanical Block Switch 1/4 NPT Male Hirschmann Conn
- 400 Series Mechanical Heavy-Duty Pressure Switch, 1 SPDT Switch, 1/4 NPT Male, 450 psig to 4,600 psig (5,000 psig), Hirschmann
| 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) |
* Available in adjustment ranges to 225 psig
† Other electrical connections available, consult factory
NOSHOK’s Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.

Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths.
---dimensions.jpg)


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