NOSHOK 200 Series Compact Pressure Switch

Fits hydraulics, pneumatics, pump/compressor, tank, leak-detection, and water-management loops that need a compact mechanical SPST/SPDT pressure switch (200L/200M/200H) with adjustable ranges from about 3–30 psig through 435–4,640 psig.

Key advantages

Wide adjustable bands — About 3–30 psig through 435–4,640 psig by 200L/200M/200H.
SPST or SPDT — Snap-action silver contacts; optional gold plating.
5 A class — 5 A at 125/250 Vac or 5 A at 12/24 Vdc.
Long cycle life — About >9M / >2M / >1M load cycles (200L / 200M / 200H).

Typical applications

Hydraulics and pneumatics set-point switching.
Pump, compressor, and tank monitoring.
Leak detection and water-management interlocks.

Selection guide

Ranges — About 3–30 psig through 435–4,640 psig depending on model (200L/200M/200H).
Contacts — SPST or SPDT snap-action; solid silver; optional gold plating.
Electrical — 5 A at 125/250 Vac or 5 A at 12/24 Vdc.
Repeatability — Maximum about ±2% of full scale at room temperature.
Hysteresis — About 2 psi + 5–10% of set point.
Wetted parts — Zinc-nickel with NBR diaphragm std; piston: PTFE dynamic seal + NBR static O-ring.
Service life — About >9M / >2M / >1M load cycles (200L / 200M / 200H).

Common mistakes

Ordering “200 Series” without 200L vs 200M vs 200H — adjustment range and cycle life differ.
Ignoring hysteresis (about 2 psi + 5–10% of set point) when the process needs a tight deadband.
Specifying gold contacts without stating low-level switching duty.
Mixing diaphragm vs piston wetted constructions without checking media compatibility (NBR / PTFE).

When to RFQ / what to tell us

200L / 200M / 200H and required adjustable set-point band (psig).
SPST vs SPDT, silver vs gold contacts, and load (Vac/Vdc).
Media, process connection, quantity, ship-to country.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	48595
Brand	NOSHOK
Model	200 Series
Product type	mechanicalpressureswitch
Ranges	About 3–30 psig through 435–4,640 psig depending on model (200L/200M/200H)
Contacts	SPST or SPDT snap-action; solid silver; optional gold plating
Electrical	5 A at 125/250 Vac or 5 A at 12/24 Vdc
Repeatability	Maximum about ±2% of full scale at room temperature
Hysteresis	About 2 psi + 5–10% of set point
Wetted parts	Zinc-nickel with NBR diaphragm std; piston: PTFE dynamic seal + NBR static O-ring
Service life	About >9M / >2M / >1M load cycles (200L / 200M / 200H)
Applications	Hydraulics/pneumatics; pumps/compressors; tank monitoring; leak detection; water management
Notes	Specs from NOSHOK 200 Series Mechanical Compact SPDT Pressure Switches datasheet (noshok.com).

Documents

NOSHOK 200 Series datasheet (PDF)

FAQ

Q: 200L vs 200M vs 200H? A: Adjustment range and rated load-cycle life differ (about >9M / >2M / >1M). Match the set-point band first.

Q: What contact rating is listed? A: 5 A at 125/250 Vac or 5 A at 12/24 Vdc; SPST or SPDT with silver contacts (gold optional).

Q: What should I send for a quote? A: L/M/H, set-point band, contact form, media/connection, quantity. Compatible with systems using NOSHOK 200 Series — we do not claim authorized-dealer status.

Parameter	Value
Type	NOSHOK 200 Series mechanical compact SPST/SPDT pressure switch (200L/200M/200H)
Ranges	Switch adjustment ranges from about 3-30 psig through 435-4,640 psig depending on model
Contacts	SPST or SPDT snap-action switch with solid silver contacts; optional gold plating
Electrical	Contact rating 5 A at 125/250 Vac or 5 A at 12/24 Vdc
Repeatability	Maximum about ±2% of full scale at room temperature
Hysteresis	About 2 psi + 5-10% of set point
Wetted Parts	Standard zinc-nickel with NBR diaphragm; piston types use PTFE dynamic seal with NBR static O-ring
Service Life	About >9M / >2M / >1M load cycles for 200L / 200M / 200H respectively
Applications	Hydraulics and pneumatics, pumps and compressors, tank monitoring, leak detection, water management
Document	NOSHOK 200 Series Mechanical Compact SPDT Pressure Switches datasheet (noshok.com)