WEG ESW-B18D39E-R32 10 HP Three Phase 460-480V Magnetic Starter
NEMA 1 Enclosure
Brand new WEG ESW-B18D39E-R32 10 horsepower, three phase, 460-480 volt magnetic starter with a NEMA 1 enclosure. This is a great quality starter with a built-in overload which is adjustable from 11-17 amps and is equipped with a manual reset button.
The ESW magnetic starters are ideal to protect motors and ensure reliable operation year after year. Assembled together in a NEMA 1 enclosure with a RESET button on the cover for quick and easy operation.
The NEMA 1 enclosure is designed primarily for indoor use and provides protection against contact with the enclosed equipment, objects and personell from shock hazard, limited amount of falling dirt, and accidental contact with live parts.
PROFESSIONAL INSTALLATION RECOMMENDED
Specifications
• HP at 230V (3 Phase): 5
• HP at 460V (3 Phase): 10
• Overload Range Min (Amps): 11
• Overload Range Max (Amps): 17
• Coil Voltage: 480 Volts
• Phase: Three
• Enclosure Rating: NEMA 1
• Enclosure Material: Steel
• Push Button Function: Reset
• Weight: 5.05
• Approximate Dimensions (W x H x D): 5-1/2" x 9-1/2" x 4-3/4"
If you are using this starter on an air compressor, you will also need a pressure switch to control the starter. In this application the pressure switch controls the On and Off of the starter according to the pressure setting of the pressure switch.
| Brand | WEG |
|---|---|
| Horsepower Maximum motor horsepower this starter is rated to control at the listed voltage and phase. | 10.0 HP |
| Phase | Three Phase |
| Voltage | 460-480 V |
| Frequency | 60 Hz |
| Overload adjustment range The overload relay’s adjustable trip-current band. Set the dial to roughly 115% of the motor’s full-load amps. | 11.0–17.0 A |
| Enclosure NEMA 1 = general-purpose indoor. NEMA 4X = washdown / outdoor, dust- and corrosion-resistant. | NEMA 1 |
| Country of origin Where this starter is manufactured, per the manufacturer / supplier documentation. | Mexico / Brazil |
| Catalog / part number | ESW-B18D39E-R32 |
| Contactor type The magnetic contactor that switches power to the motor. | WEG CWB18 |
|---|---|
| Contactor rating | 18 A |
| Coil / control voltage The voltage that energizes the contactor coil — supplied by the pressure switch or control circuit. | 480 VAC |
| Control scheme The pilot devices wired in: e.g. Reset only, Start/Stop + Reset, or Hand-Off-Auto (HOA). | Reset only |
| Auxiliary contacts Spare isolated contacts for interlocks, run indication, or a low-oil switch. | 1 NO + 1 NC, electrically isolated |
| Overload relay type Bimetallic relays trip on a heater element sized to the motor current; ambient-compensated means the trip point is stable across temperature. | Bimetallic, ambient-compensated |
|---|---|
| Trip class How long the relay tolerates locked-rotor current before tripping. Class 10 = within 10 s, standard for compressors. | Class 10 |
| Reset mode Manual reset requires pressing the button after a trip; automatic re-closes on cooldown. | Selectable manual / automatic |
| Phase-loss protection Trips the motor off if one supply phase is lost, preventing single-phasing damage. | Yes |
| Enclosure material | Steel |
|---|---|
| Dimensions (H × W × D) Approximate enclosure size from the manufacturer catalog. | 9.5″ H × 5.5″ W × 4.75″ D |
| Weight | 5.05 lb |
| Agency approvals | UL508A listed, cULus certified |
|---|---|
| Ambient temperature range | -4°F to +140°F (-20°C to +60°C) |
| Application notes | Factory pre-wired. For air-compressor use, control the starter with a pressure switch. |
