HOBBS PRESSURE SWITCH M‑4007‑4

$49.99

type: Unknown Type
Vendor: CorvairFarmer

Description:

HOBBS PRESSURE SWITCH M‑4007‑4

Brand: Hobbs (Stewart‑Warner Division) Model: M‑4007‑4 Type: Low‑Pressure Switch / Safety Cutoff Switch Condition: New Old Stock (NOS) or New (depending on your unit) Category: Industrial • Generator • Engine Controls • Pressure Safety Devices


DESCRIPTION

For sale is a Hobbs M‑4007‑4 Pressure Switch, a rugged, U.S.‑built low‑pressure safety switch widely used in industrial engines, generators, compressors, agricultural equipment, and aviation‑support machinery. Hobbs pressure switches are known for their reliability, long service life, and consistent actuation under demanding conditions.

This model is part of the Hobbs 4000‑series — a proven family of diaphragm‑type pressure switches designed for low‑voltage control circuits, shutdown systems, and warning indicators.

Perfect for restoration, OEM‑spec replacement, or stocking spares for fleet maintenance.


FEATURES

  • Hobbs 4000‑series diaphragm pressure switch

  • Normally‑open or normally‑closed (varies by sub‑model)

  • Compact, rugged construction

  • Ideal for low‑pressure safety shutdown circuits

  • U.S.‑manufactured reliability

  • Threaded pressure port for easy installation


TYPICAL PRESSURE RANGE

(If you want, I can confirm exact actuation PSI for your specific M‑4007‑4 variant.) Most 4007‑series switches fall in the 3–7 PSI actuation range.

FITMENT / APPLICATION MATRIX

Pressure switches are universal, so the matrix is based on system type and function rather than specific models.

Equipment Type Application Notes
Industrial Engines Low‑oil‑pressure shutdown Common on Kohler, Onan, Wisconsin, Continental
Generators (Gensets) Safety shutdown / warning circuit Used on many 5–50 kW units
Air Compressors Pressure cutoff / safety interlock Works with low‑pressure control circuits
Agricultural Equipment Engine protection Tractors, sprayers, irrigation pumps
Construction Equipment Hydraulic/engine monitoring Skid steers, loaders, compactors
Aviation Ground Support Engine hour‑tracking safety interlocks Hobbs is standard in GSE
Marine Engines Low‑pressure alarm circuits Diesel and gasoline inboards
Custom Projects Any low‑pressure monitoring or shutdown Universal wiring


🔌 ELECTRICAL COMPATIBILITY

Voltage Compatible
12V DC ✔ Yes
24V DC ✔ Yes
48V DC ✔ Some variants
AC Systems ✘ No (DC control circuits only)

IDEAL FOR

  • Industrial engines

  • Generator sets (gensets)

  • Air compressors

  • Agricultural tractors

  • Hydraulic systems

  • Aviation ground‑support equipment

  • Heavy equipment

  • Custom control panels


LOCATION - STEWART WARNER SHELF