Eaton 40A 3-Phase Definite Purpose Magnetic Motor Starter — 24–40A Overload
The Eaton 40-amp 3-phase definite purpose magnetic motor starter delivers reliable across-the-line motor starting and overload protection for air compressors and other continuous-duty motor loads. It pairs a 40 A 3-pole contactor with an adjustable 24–40 A bi-metallic overload relay in a NEMA Type 1 enclosure, and ships factory pre-wired — no separate heater elements to select or install.
Key specifications
- Brand: Eaton (Cutler-Hammer A27 definite purpose series)
- Type: Definite purpose magnetic motor starter, across-the-line, non-reversing
- Phase / poles: 3-phase, 3-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, 440–480V (select below)
- Horsepower by voltage: 10 HP @ 208–240V; 20 HP @ 440–480V
- Enclosure: NEMA Type 1 general purpose
- Trip-free mechanism; shrouded, finger-proof terminals; no heaters required; factory pre-wired
- UL Recognized components; CSA Certified contactor
Typical applications
Ideal for reciprocating and rotary screw air compressors, pumps, fans, and other three-phase motor loads that need automatic overload protection to guard windings against over-current and excess heat. Works with your existing pressure switch to provide on/off control plus motor protection.
The Eaton 40 A 3-phase definite purpose magnetic starter offers a rugged, code-compliant motor control solution with an adjustable 24–40 A overload in a NEMA Type 1 enclosure, available in 120V, 240V, and 480V coil voltages for air compressor and industrial duty.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
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