PSW-411

## _**HEAVY-DUTY DiVision 1 inDUsTRiAL PREssURE sWiTCHEs**_ 

## _**Vacuum to 3000 psi**_ 

## _**PsW-400 series**_ 

- U **Dual-Chamber Design Isolates Electronics from Pressure Media** 

- U **Heavy-Duty Cast Aluminum with Corrosion-Resistant Epoxy Coating** 

- U **Meets NEMA 7 and 9 Classifications** 

**PSW-405, 3 to 15 psi range, shown smaller than actual size.** 

- U **Gasketed Covers** 

- U **Tamper/VibrationResistant Setpoint Adjustment** 

- U **Surface and Mounting Bracket Standard** 

Designed for applications in hazardous atmospheres, PSW-400 Series pressure switches offer complete reliability thanks to a rugged, die-cast aluminum enclosure with waterproof gaskets and 2 separate chambers for electronics and actuator. Single or dual setpoints are available, with all critical parts made of stainless steel. In addition, the PSW-400 Series employs vibration-resistant setpoints and a calibrated scale. 

**Definition of Division 1:** Locations where hazardous material concentrations exist continuously, intermittently, or periodically under normal operating conditions. 

## **SPECIFICATIONS** 

**Approval:** UL listed; Class I, Divisions 1 and 2, Groups B, C, D; Class II, Divisions 1 and 2, Groups E, F, G; CSA certified **Storage Temp:** -29 to 65°C (-20 to 150°F) 

**Ambient Temp Limits:** -29 to 65°C (-20 to 150°F) 

**Process Temp Limits: Stainless Steel:** 149°C (300°F) **Buna-N:** 65°C (150°F) 

**Mounting bracket included** 

## **Enclosure Classification:** 

NEMA 7 and 9 hazardous location, explosion proof, dust-ignition proof **Setpoint Repeatability:** ±1% of range **Switch Output:** 1 or 2 SPDT switches can be wired “normally open” or “normally closed” 

**Electrical Rating:** 

**10 A:** 125/250 Vac **0.5 A:** 125 Vdc **0.25 A:** 250 Vdc **15 A:** 125/250 Vac **Optional Hermetically Sealed 5 A:** 125/250 Vac 

**Enclosure:** Dual-chamber, epoxy-coated cast aluminum, gasketed 

**Electrical Connection:** 2 ea.[3] ⁄4 NPT electrical conduit hubs 

**Pressure Connection:**[1] ⁄4 FNPT, vacuum to 600 psi;[1] ⁄2 MNPT;[1] ⁄4 FNPT, 1000 to 3000 psi 

**Connection Material** : 

**Vacuum Through inH2O Ranges:** Carbon steel 

**All psi Ranges:** 316 SS **Dimensions:** 

**psi Ranges:** 206 (max) H x 140 W x 70 mm D (from center line) (7.1 H x 5.5 W x 2.8" D from center line) **inH2O Ranges:** W and D = 140 mm (5.5") 

a - hel **Setpoint chamber with 2 adjustable scales.** 

**Weight:** 2.7 kg (6 lb) 

## **OPTIONAL CONFIGURATIONS:** 

**Oxygen Service:** Specify option **“-X6B”** for oxygen cleaning, **and extra cost** (316 SS only) 

**Pressure Switch Options:** (add suffix to part number and extra cost) Hermetically sealed 5 A 125/250 Vac switch for extra protection in severe environments: **“-P”** Single Setpoint. **“-PP”** Dual Setpoint. 316 SS Welded Pressure Activator: **“-S”** 15 to 600 psi ranges only. 

**H-31** 

**H** 

## _**inDUsTRiAL PREssURE sWiTCH WiTH DUAL-CHAmbER DEsign**_ 

**==> picture [234 x 138] intentionally omitted <==**

**----- Start of picture text -----**<br>
Top view shows<br>3⁄4 NPT electrical<br>Gasketed cover. conduit entry<br>Electrical chamber<br>isolated from<br>working fluid<br>**----- End of picture text -----**<br>


## **To Order** 

|**Too Orderrderderr**|**Too Orderrderderr**|**Too Orderrderderr**|**Too Orderrderderr**|**Too Orderrderderr**|**Too Orderrderderr**|
|---|---|---|---|---|---|
|**ADjUSTABLE RANGE**<br> **MODEL NO.**|**ADjUSTABLE RANGE**||**DEADBAND**<br>**METRICSTANDARD UNITS     PRESSURE**|**PROOF**<br>**PRESSURE**|**SWITCH**|
||**STANDARD**|**METRIC**||||
|**SINGLE SETPOINT, ADjUSTABLE DEADBAND, BUNA-N DIAPHRAGM, O-RING,1⁄4 FNPT CONNECTION**||||||
|**PSW-401**<br>~~a~~<br>~~re~~|-6 to -30 inHgvac|-20 to -100 kPa|3 to 27 inHg|250psi|10 A SPDT|
|**PSW-402**<br>~~a~~<br>~~re~~<br>~~rs~~|6 to 30 inH2O|1.5 to 7.5 kPa|3 to 27 inH2O|20psi|10 A SPDT|
|**PSW-403**<br>~~re~~<br>~~rs~~<br>~~es~~|12 to 60 inH2O|3 to 15 kPa|3 to 54 inH2O|20psi|10 A SPDT|
|**PSW-404**<br>~~rs~~<br>~~es~~<br>~~ee~~|30 to 150 inH2O|7.4 to 37 kPa|15 to 135 inH2O|20psi|10 A SPDT|
|**PSW-405**<br>~~es~~<br>~~ee~~<br>~~re~~|3 to 15psi<br>~~CO~~|20 to 100 kPa<br>~~CO~~|2 to 13psi<br>~~CO~~|500psi<br>~~CO~~|10 A SPDT<br>~~CO~~|
|**PSW-406**<br>~~ee~~<br>~~re~~<br>~~a~~|6 to 30psi<br>~~CO~~|40 to 200 kPa<br>~~CO~~|2 to 27<br>~~CO~~|500psi<br>~~CO~~|10 A SPDT<br>~~CO~~|
|**PSW-407**<br>~~re~~<br>~~a~~<br>~~re~~|20 to 100psi<br>~~CO~~|140 to 700 kPa<br>~~CO~~|5 to 90<br>~~CO~~|1000psi<br>~~CO~~|10 A SPDT<br>~~CO~~|
|**PSW-408**<br>~~a~~<br>~~re~~<br>~~rs~~|40 to 200psi|280 to 1400 kPa|13 to 180|1000psi|10 A SPDT|
|**PSW-409**<br>~~re~~<br>~~rs~~<br>~~es~~|80 to 400psi|0.56 to 2.8 MPa|20 to 360|2400psi|10 A SPDT|
|**PSW-410**<br>~~rs~~<br>~~es~~<br>~~es~~|200 to 1000psi<br>~~es~~|1.4 to 7 MPa<br>~~QQ~~|100 to 900<br>~~QQ~~|12,000psi<br>~~QQ~~|10 A SPDT<br>~~QQ~~|
|**PSW-411**<br>~~es~~<br>~~es~~|600 to 3000psi<br>~~es~~|4.2 to 21 MPa<br>~~QQ~~|200 to 2800<br>~~QQ~~|12,000psi<br>~~QQ~~|10 A SPDT<br>~~QQ~~|
|**DUAL SETPOINT, FIXED DEADBAND, BUNA-N DIAPHRAGM, 1⁄4 FNPT CONNECTION**<br>~~esesQQ~~<br>~~a~~||||||
|**PSW-421**<br>~~a~~<br>~~rs~~|-6 to -30 inHgvac|-20 to -100 kPa|0.5 to 1 inHg|250psi|Two 15 A SPDT|
|**PSW-422**<br>~~a~~<br>~~rs~~<br>~~es~~|6 to 30 inH2O|1.5 to 7.5 kPa|0.5 to 1 inH2O|20psi|Two 15 A SPDT|
|**PSW-423**<br>~~rs~~<br>~~es~~<br>~~ee~~|12 to 60 inH2O|3 to 15 kPa|0.5 to 1.3 inH2O|20psi|Two 15 A SPDT|
|**PSW-424**<br>~~es~~<br>~~ee~~<br>~~re~~|30 to 150 inH2O<br>~~CO~~|7.4 to 37 kPa<br>~~CO~~|1.5 to 3 inH2O<br>~~CO~~|20psi<br>~~CO~~|Two 15 A SPDT<br>~~CO~~|
|**PSW-425**<br>~~ee~~<br>~~re~~<br>~~a~~|3 to 15psi<br>~~CO~~|20 to 100 kPa<br>~~CO~~|0.5 to 1psi<br>~~CO~~|500psi<br>~~CO~~|Two 15 A SPDT<br>~~CO~~|
|**PSW-426**<br>~~re~~<br>~~a~~<br>~~re~~|6 to 30psi<br>~~CO~~|40 to 200 kPa<br>~~CO~~|0.5 to 1.5psi<br>~~CO~~|500psi<br>~~CO~~|Two 15 A SPDT<br>~~CO~~|
|**PSW-427**<br>~~a~~<br>~~re~~<br>~~rs~~|20 to 100psi|140 to 700 kPa|1 to 2.5psi|1000psi|Two 15 A SPDT|
|**PSW-428**<br>~~re~~<br>~~rs~~<br>~~es~~|40 to 200psi|280 to 1400 kPa|1 to 4psi|1000psi|Two 15 A SPDT|
|**PSW-429**<br>~~rs~~<br>~~es~~<br>~~ee~~|80 to 400psi|0.56 to 2.8 MPa|4 to 8psi|2400psi|Two 15 A SPDT|
|**PSW-430**<br>~~es~~<br>~~ee~~<br>~~es es~~|200 to 1000psi<br>~~es~~|1.4 to 7 MPa<br>~~Qe~~|7 to 30psi<br>~~Qe~~|12000psi|Two  15 A SPDT|
|**PSW-431**<br>~~ee~~<br>~~es es~~|600 to 3000psi<br>~~es~~|4.2 to 21 MPa<br>~~Qe~~|30 to 70psi<br>~~Qe~~|12000psi|Two 15 A SPDT|
|**DUAL SETPOINT, FIXED DEADBAND, 316 SS DIAPHRAGM, 1⁄4 FNPT CONNECTION**<br>~~es es~~<br>~~Qe~~||||||
|**PSW-445**<br>~~en~~<br>~~es~~|3 to 15psi<br>~~en~~|20 to 100 kPa<br>~~en~~|0.5 to 1psi<br>~~en~~|500psi<br>~~en~~|Two 15 A SPDT<br>~~en~~|
|**PSW-446**<br>~~es~~<br>~~ee~~|6 to 30psi|40 to 200 kPa|1 to 2psi|500psi|Two 15 A SPDT|
|**PSW-447**<br>~~es~~<br>~~ee~~|20 to 100psi|140 to 700 kPa|2 to 4psi|1000psi|Two 15 A SPDT|
|**PSW-448**<br>~~ee~~<br>~~A~~|40 to 200 psi<br>~~A~~|280 to 1400 kPa<br>~~A~~|3 to 8 psi<br>~~A~~|1000 psi<br>~~A~~|Two 15 A SPDT<br>~~A~~|



**H-32**