Index switches
Heavy-Duty Pressure Switches
Index pressure switches turn a circuit on or off at a set pressure – for indication, interlocks and control on engines, transmissions, hydraulics, air systems and tanks. They’re proven in harsh underbonnet and off-road conditions.
- 1,000,000+cycles
- NO · NC · COcontact modes
- customset and reset points
How it works
How It Works
Two Snap-Action Elements
A pressure (or temperature) disc snaps over at the set point and triggers a Honeywell MicroSwitch™ – two snap-action elements in series. The result is clean, chatter-free switching that shrugs off vibration and lasts up to a million cycles or more, depending on load and voltage.
Time Delay and Diagnostics
Time-delay switches ignore a normal, momentary pressure spike or dip. Diagnostic switches let the controller tell a broken or shorted wire from a normal open or closed switch.
Why Index pressure switches
Beyond on and Off
Vibration Resistant
Two snap-action elements for clean switching.
Many Fluids
Air, oil, water, coolant, hydraulic and transmission fluid.
Accurate
Tight tolerances and stable, drift-free calibration.
Your Spec
Set and reset pressures, fittings and connectors to suit.
How to choose
Specifying a Pressure Switch
Set and Reset
The pressure it switches at, rising or falling, and where it resets.
Mode
Normally open, normally closed, or changeover.
Thread and Connector
1/8" or 1/4" NPT and others; Metri-Pack, Weather-Pack, Deutsch, spade or flying leads.
Literature & related
More Information
- Pressure switch part list
Mechanical pressure switches by thread, set and reset point · PDF, 9.0 MB - Index product catalogue
Sensors, switches, probes and controls, with OEM cross-references · PDF, 9.0 MB
Not Sure Which One You Need?
Tell us about the job – the machine, the conditions and what it has to do – and we’ll help you choose the right Index Sensors & Controls product.