High Tech Systems & Equipment Inc. - Systems & Equipment 
Description
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.
FEATURES:
- 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
TECHNICAL SPECIFICATIONS:
| 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 |
