Kobold KPH300 Specifications

Mechanical Pressure Switch

measuring

•

monitoring

•

analyzing

KPH300

● Switching Ranges: 3...30 PSIG to 450...4600 PSIG

● Field Adjustable Setpoint

● Diaphragm or Piston Type Sensing Element

● SPDT Micro-Switch Contact

● Reliable and Economical

● Excellent OEM Product

KOBOLD companies worldwide:

ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM

05/05-29- 2019

KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205

Main Ofce:

1.800.998.1020

1.412.788.4890
[e-mail]
www.koboldusa.com

Mechanical Pressure Switch Model KPH300

Description

The KPH300 is an excellent choice for pressure switching applications
that require a reliable solution at an affordable price. It utilizes proven
diaphragm or piston sensing technology, depending on the measuring
range. The setpoint and hysteresis are both field adjustable and
their access is protected from the elements beneath the DIN 43 650
electrical connector. These can also be factory-set at your specified
setpoint for a small additional charge. The SPDT micro-switch contacts
are silver-plated for extended service life. The combination of reliability
and low cost also makes the KPH300 an excellent choice for many
OEM applications.

Technical Details

Switching Ranges: 3...30 PSIG to 450...4600 PSIG
Media

Diaphragm Type: Compressed Air or Non-Corrosive Liquids
Piston Type: Self-lubricating fluids, e.g. Hydraulic Oil

or Grease

Process Connection: 1/4" Male NPT (Others Available in OEM

Quantities)

Measuring Element
≤ 15/225 PSIG: NBR Diaphragm
≥ 150/425 PSIG: Steel Piston with NBR Seal

Wetted Materials: Zinc-plated Steel and NBR
Housing Material: Zinc-Plated Steel
Media, Ambient and
Storage Temperature: -4...176 °F
Proof Pressure
≤ 15/225 PSIG: 870 PSIG
≥ 150/425 PSIG: 5000 PSIG

Dimensions

Switchpoint/Hysteresis Adjustment

Switch

Funtion

Hysterisis

Funtion

Setpoint Repeatability: ±2% of Full Scale Range
Setpoint Hysteresis

Switching Output Schematic

≤ 15/225 PSIG: ~7-15% of Full Scale Range
≥ 150/425 PSIG: ~7-10% of Full Scale Range
Max. Contact Rating: 2 A up to 28 VDC,

4 A up to 125 VAC,
4 A up to 250 V

AC

Service Life: >1,000,000 Load Cycles

Ingress Protection: IP65
Weight: 0.2 lbs. Approx.

Order Details (Example: KPH300-12 150/1700 8 P; 200 PSI Falling)

Model Switch Fitting Switching Pressure Range (Adjustable) Electrical Connection

..3/30.. = 3...30 PSIG

KPH300-

..C = Plug Connector (DIN 43 650) with ½" NPT Conduit (With Electrical Connection 8)

..P = Factory-set Switchpoint (Please Specify the Desired Pressure Switchpoint and upon Rising or Falling Pressure)

2

..1.. = Single

SPDT
Contact

..2.. = ¼" NPT Male

(Standard)

..7/115.. = 7...115 PSIG

..15/225.. = 15...225 PSIG

..150/425.. = 150...425 PSIG

..150/1150.. = 150...1150 PSIG

Options

www.koboldusa.com

..150/1700.. = 150...1700 PSIG

..150/2300.. = 150...2300 PSIG

..300/2900.. = 300...2900 PSIG

..300/3600.. = 300...3600 PSIG

..450/4600.. = 450...4600 PSIG

..1 = Plug Connector

(DIN 43 650)
with 36" Cable

..8 = Plug Connector

(DIN 43 650)
(Standard)

No responsibility taken for errors;

subject to change without prior notice.