Eurotherm EA51 Series Medium Torque Actuator Barber Colman EA51-1, EA51-3, EA51-21370, EA51-370



In stock

EA51: *


Eurotherm EA51 Series Medium Torque Actuator Barber Colman

EA51-1, EA51-3, EA51-370

The Eurotherm EA51 medium torque actuator is ideal for proportional positioning of a fuel valve, butterfly valve, damper and similar applications. Units are available with either fixed or adjustable speed. Timing of adjustable speed units can be increased (decreasing the speed) by turning a slotted adjustment screw on the outside of the case. Adjust range is approximately ten times rated. Standard features include a 100ž feedback slidewire and a single SPDT switch. All models, except those with transformers, are UL/cUL listed.

  • Proportional actuators with built-in feedback potentiometer
  • Open/Close contact closure input
  • 24Vac, 120Vac and 240Vac models
  • 60, 220 and 450 in-lbs torque
  • Compatible with VB series valves


Control Action: Floating. Requires SPDT switch with floating (center off) position rated at 0.9 amps. Proportional electric with slidewire feedback.
Connections: Coded screw terminals.
Shaft Rotation: Reversible proportional can stop at any point in the stroke. Adjustable 45-320º
Auxiliary Switch: Adjustable SPDT snap acting. Factory set to close one contact and open the other at end of clockwise rotation.
Ambient Temperature: -40 to 136°F (-40 to 58°C)
Humidity: 5 to 95% rh, non-condensing.
Case: Die cast aluminum with two 1/2″ conduit knockouts each side
Motor and Gear Train: Oil immersed
Mounting: Damper – upright recommended.
Valve – upright with actuator above centerline of valve body.
Dimensions: 7″ H x 5-3/8″ W x 6-5/16″ D
Weight: 8 lbs.
Power Consumption: 45W

Additional information

Weight 10 lbs
Dimensions 13 × 11 × 10 in

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