Eaton 45A Single-Phase Definite Purpose Magnetic Motor Starter — 30–45A Overload, 208-240V (10 HP)
The Eaton B27CGF45B057 is a 45 A single-phase definite purpose magnetic motor starter for 10 HP air compressor motors at 208–240V. It combines a 45 A 2-pole contactor with an adjustable bi-metallic overload relay in a NEMA Type 1 enclosure and ships factory pre-wired — no heaters required. Works with your existing pressure switch and helps prevent pressure-switch contact burnout.
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: 45 A inductive full load
- Adjustable overload range: 30–45 A (per supplier sheet), bi-metallic, ambient compensated, Class 10 trip
- Coil voltage: 208–240V
- Horsepower: 10 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 10 HP single-phase air compressors where the starter prevents pressure-switch contact burnout and protects motor windings from overheating.
The Eaton B27CGF45B057 45 A single-phase definite purpose magnetic starter delivers rugged, code-compliant motor control in a NEMA Type 1 enclosure at 208–240V for air compressor duty.
NOTE: Actual product may be different from pictured!
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