Skip to search Skip to main content Skip to navigation

Welcome to our new website, found an issue or bug? Please report it here

We noticed you are from . Visit your local site for regional offers and live support.

PSW-621-Series

OEM Mechanical Pressure Switch for Indoor Applications

Models In Stock
  • Watertight, Corrosion-Resistant Case
  • Thin Film Sensor for Long Stabile Life – Minimum 1 Million Cycles at Rated Load
  • Reliable in Industrial Environments
  • Field Adjustable
PSW-621-Series
From C$ 197.63
Models In Stock
OEM Mechanical Pressure Switch for Indoor Applications PSW-621-Series PSW-621-Series
loading all models
Product Overview
  • Control Output SPST Relay
  • Cycling < 20 cycles/min
  • Deadband Type Adjustable
  • Diameter 1.1 in
  • Electrical Connection Pigtail Leads
  • Insulation PVC
  • Lead Length 12 in
  • Materials Zinc Alloy
  • Materials, Wetted 17-4 Stainless Steel, Methacrylate Ester, Zinc-Aluminum Alloy with Chromate Finish
  • Process Connection Size 1/8 in
  • Process Connection Type NPT Male
  • Process Temperature, Max 105 °C
  • Process Temperature, Min -55 °C
  • Process Temperature Note -55 to 105°C (-65 to 221°F); 2% setpoint shift can occur below -23°C (-10°F) or above 52°C (125°F)
  • Proof Pressure 150% Full Scale
  • Setpoint Repeatability ± 2%
  • Setpoint Repeatability Note ± 2% of maximum system pressure
  • Switch Single
  • Switch Type SPST
  • Weight 2 oz
  • Wire Gauge 20 AWG
  • Wiring/Connector Table Red = N/C, White = N/O, Black = Common
SPECIFICATIONS
Process Temp: -55 to 105°C (-65 to 221°F) 2% setpoint shift can occur below -23°C (-10°F) or above 52°C (125°F)
Repeatability: ± 2% of max system pressure
Cycling: Not to exceed 20 cycles/min
Warranty: 3 year/1 million cycles
Proof Pressure: 150% Max Pressure
Wetted Parts: 17-7 PH stainless steel, Loctite sealing compound #271, ZA8 alloy, chromate finish
Enclosure: Zinc alloy, chromate finish
Dimensions: 48 L x 28 mm Dia. (1.9 L x 1.1' Dia.)
Pressure Port: 1/8 -27 NPT Male
Electrical Connection: 300 mm (12') pigtail leads, 20 AWG, polyvinyl insulated
Wiring Code (pressure):
Black = Common
Red = N/C
White = N/O
Wiring Code (vacuum):
Black = Common
Red = N/O
White = N/C
Weight: 57 g (2 oz) (approx)
Rated 3 out of 5 by from It works It works as advertised, but adjustment pressure setting is ballpark.
Date published: 2020-06-24
Rated 5 out of 5 by from Great compact switch I installed on a vacuum table and it was perfect for the box size and worked very well, also very easy to set. Great product.
Date published: 2016-04-28
  • y_2025, m_2, d_21, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_CA, sid_PSW-621, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 4ms
  • REVIEWS, PRODUCT

Can this be used on oxygen line

Asked by: Jabma
The PSW-620 cannot be used for oxygen.
Answered by: Applicatrions Engineer JK
Date published: 2023-11-28

what is the wiring for these used in nc operation

Asked by: josephs
Thank you for your question. The unit can be wired ether normally open or closed. The n/c is used mostly for decrease in pressure. Hope this was helpful
Answered by: application engineer je
Date published: 2022-01-04
  • y_2025, m_2, d_20, h_9CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_2
  • loc_en_CA, sid_PSW-621, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 9ms
  • QUESTIONS, PRODUCT
en-CA
en_CA
Save Configuration