Electric valve actuator SCE300

quarter-turnadjustablecompact

Product overview
The Bettis SCE300 is an intelligent quarter-turn electric actuator designed to control low-torque quarter-turn valves and dampers in industrial plants. Its compact, lightweight design integrates the functions of larger actuators while enabling direct mounting or adaptation to other quarter-turn valve types.

Key features

• Separate terminal enclosure isolated from the electronics and motor compartment; only the wiring terminal is exposed during field installation
• Adjustable torque switches: 50% / 75% / 100% of rated torque
• Manual override permanently engaged for immediate hand operation
• Anodized aluminum housing with epoxy powder coat for corrosion resistance in aggressive environments
• Visual mechanical position indicator for reliable valve position reference
• Permanently-lubricated, self-locking epicyclical gear train to reduce need for motor brakes and ensure smooth operation
• Mechanical travel stops to prevent over-travel during handwheel or motor operation
• Over-temperature motor thermostat and integral speed control, adjustable separately for opening and closing
• Latched-type output contacts for fully open / fully closed remote indication; additional outputs available for monitor/blinker/local selector
• Optional communication and I/O modules increase functionality

Specifications (summary)

• Power source: Electric
• Product type: Quarter-turn electric actuator
• Actuation: Electric
• Control type: On/Off, Modulating
• Certifications: IECEx; FM (US); CSA (Canada); NEPSI (China); CU-TR (CIS); INMETRO (Brazil); CCOE (India); KOSHA (Korea); NEMA; IP-rated variants
• Torque switch settings: 50% / 75% / 100% of rated torque
• Manual override: Always engaged
• Housing: Anodized aluminum with epoxy powder coating
• Position feedback: Visual mechanical indicator; latched output contacts for remote status
• Gear train: Permanently-lubricated, self-locking epicyclical gearing
• Protection: Mechanical travel stops; over-temperature motor thermostat
• Speed control: Independent adjustment for opening and closing
• Optional modules: OM1 (Modulating I/O), OM3 (Local interface), OM9 (PROFIBUS DP V0/V1), OM11 (DeviceNet), OM13 (3-wire)

Typical applications

• Control of ball, butterfly and plug valves (low-torque)
• Dampers and HVAC isolation valves in industrial plants
• Process, petrochemical, power and water treatment facilities requiring compact quarter-turn actuation