Condor MDR3 4-Port Air Compressor Pressure Switch — Adjustable Overload, On/Off Lever & Unloader
The Condor MDR3 is a heavy-duty 4-port pressure switch with a built-in adjustable motor overload relay — combining automatic compressor control and motor protection in a single device. As tank pressure rises and falls, the switch starts and stops the motor; the integrated thermal overload trips on excess current to guard the motor windings, effectively acting as a manual motor starter. An on/off lever lets you isolate the compressor, and the 90° compression unloader valve bleeds trapped head pressure so the motor restarts under no load.
Key specifications
- 4-port configuration with 1/4" FNPT connections
- Adjustable thermal overload protection (current ranges from 6.3 A up to 30 A)
- Pressure ranges available from 80–100 PSI through 215–250 PSI
- Maximum switching capacity 30 FLA at 220 V
- Suitable for single-phase and three-phase motors (2-pole and 3-pole models)
- Manual ON/OFF lever for safe isolation
- Integrated 90° compression unloader valve for easy, loaded-free restarts
- NEMA 1 enclosure
Typical applications
Ideal for reciprocating and rotary air compressors where both automatic pressure control and motor overload protection are required — shop and industrial compressors, pumps, and other motor-driven equipment. Select the pressure range to match your tank's cut-in/cut-out and set the overload to your motor's full-load amperage.
The Condor MDR3 4-port pressure switch with adjustable overload, on/off lever, and unloader delivers reliable compressor control and built-in motor protection in one rugged, field-adjustable unit.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
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