Eaton 40A Single-Phase Definite Purpose Magnetic Motor Starter — 24–40A Overload
The Eaton 40 A single-phase definite purpose magnetic motor starter protects single-phase air compressor motors from overload while providing reliable on/off control through your existing pressure switch. It combines a 40 A 2-pole contactor with an adjustable 24–40 A bi-metallic overload relay in a NEMA Type 1 enclosure and ships factory pre-wired — no heaters required.
Key specifications
- Brand: Eaton (Cutler-Hammer B27 definite purpose series)
- Type: Definite purpose magnetic motor starter, across-the-line, non-reversing
- Phase / poles: Single-phase, 2-pole
- Contactor rating: 40 A inductive full load
- Adjustable overload range: 24–40 A, bi-metallic, ambient compensated, Class 10 trip
- Coil voltage options: 110–120V, 208–240V (select below)
- Horsepower: 7.5 HP @ 208–240V single-phase
- Enclosure: NEMA Type 1; trip-free mechanism; shrouded finger-proof terminals
- UL Recognized components; CSA Certified contactor
Typical applications
Ideal for single-phase air compressors in workshops, garages, and auto/paint shops where the starter prevents pressure-switch contact burnout and protects motor windings from overheating.
The Eaton 40 A single-phase definite purpose magnetic starter is a rugged, code-compliant motor control with a 24–40 A adjustable overload in a NEMA Type 1 enclosure, available in 120V and 240V coil voltages for air compressor duty.
NOTE: Actual product may be different from pictured!
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