WEG

WEG 1 HP 3 Phase Magnetic Starter NEMA 1 460-480V 1.8 - 2.8 Amp ESW-B9D39E-R25

Low stock: 1 available
SKU: ESW-B9D39E-R25
$100.01
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WEG ESW-B9D39E-R25 1 HP Three Phase Magnetic Starter
NEMA 1 Enclosure

Brand new ESW-B9D39E-R25 1 horsepower, three-phase, a 460-480-volt magnetic starter with a NEMA 1 enclosure. This is a great quality starter with a built-in overload that is adjustable from 1.8-2.8 amps and is equipped with a manual reset button.

The WEG magnetic starters are ideal to protect motors and ensure reliable operation year after year. Assembled 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 protects against contact with the enclosed equipment, objects, and personnel from shock hazard, a limited amount of falling dirt, and accidental contact with live parts.

PROFESSIONAL INSTALLATION RECOMMENDED

Specifications:

• HP at 460V: 1
• Overload Range Min (Amps): 1.8
• Overload Range Max (Amps): 2.8
• Coil Voltage: 460-480 Volts
• Phase: Three
• Frequency: 60Hz
• 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

Standard Features

• Fast acceleration and high initial torque
• Bimetallic overload relays - class 10
• Adjustable trip current
• Ambient temperature compensated for -4°F to 140°F
• Phase-loss sensitivity protection
• Selectable manual or automatic reset
• Electrically isolated NO-NC auxiliary contacts
• UL, IEC, and CSA Certified

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.

Overview

Brand WEG
Horsepower Maximum motor horsepower this starter is rated to control at the listed voltage and phase. 1.0 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. 1.8–2.8 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-B9D39E-R25

Contactor & Control

Contactor type The magnetic contactor that switches power to the motor. WEG CWB9
Contactor rating 9 A
Coil / control voltage The voltage that energizes the contactor coil — supplied by the pressure switch or control circuit. 460-480 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 Protection

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 & Physical

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

Ratings & Compliance

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.