Product Overview

Spirax Sarco EL4600 Series Electric Actuator is a high-precision actuator designed for DN15-DN50 control valves, featuring linear stroke and 2000N thrust with proportional signal control. Compatible with multiple input signals and customizable output signals, it works with LE/LEA, KE/KEA, and QL (DN15-DN50) series valves for precise industrial valve control.

Key Features

• Overload Protection: Built-in torque switch protects valve and actuator from damage
• Auto Stroke Setting: Automatically recognizes 0-100% stroke range
• Speed Selection: Choose between 100 or 200 step operation speeds
• Stable Operation: Synchronous motor maintains consistent speed under voltage fluctuations

Technical Specifications

Model Specifications

Model	Power	Thrust	Stroke	Speed	Power (VA)	Rated Load (A)	Capacitor (μF)
EL4611	220Vac	2kN	20mm	0.36mm/s	16.5	0.069	34
EL4613	24Vac	2kN	20mm	0.36mm/s	10	0.075	0.474

Control & Feedback Signals

• Control Signal: 0-10Vdc, 2-10Vdc, 4-20mA (selectable)
• Feedback Signal: Same as input control signal
• Handwheel: Included on all models

Environmental Specifications

Parameter	Value
Storage Temperature	-40 to +75°C, 5-95% RH
Operating Temperature	-15 to +65°C, 5-95% RH
Max Medium Temperature	250°C
IP Rating	IP54 (DIN40050)
Motor Insulation	Class E (IEC standard)

Materials

Component	Material
Yoke	Cast Aluminum
Base	Cast Aluminum
Gears	Steel
Electrical Connection	PF½

Product Structure

Selection Guide

LE/LEA, KE/KEA Series Valves - Maximum Shut-off Differential Pressure (bar)

Valve Size	Stroke	Kvs	PTFE Stem Seal	Graphite Stem Seal
DN15	20mm	4	40	40
DN20	20mm	6.3	40	40
DN25	20mm	10	38.3	27.7
DN32	20mm	16	19.8	14.3
DN40	20mm	25	12.0	8.5
DN50	20mm	36	6.7	4.7

QL Three-Way Valves - Maximum Shut-off Differential Pressure (bar)

Valve Size	Stroke	Kvs	PTFE Stem Seal	Graphite Stem Seal
DN15	20mm	4	40	39.6
DN20	20mm	6	40	39.6
DN25	20mm	10	32.1	23.2
DN32	20mm	17	19.5	14.0
DN40	20mm	25	12.3	8.8
DN50	20mm	35	7.4	5.2

Dimensions & Weight

• Weight: Approx. 3.9kg
• Refer to installation manual for detailed mounting dimensions.

Installation Notes

Installation Guidelines

• Install valves on horizontal pipelines; actuator position depends on valve type and medium temperature
• Do not install actuator directly below the valve
• Avoid installation in humid environments
• Follow terminal definitions in installation manual for electrical connections

Ordering Information

When ordering, specify:

• Actuator model (EL4611 or EL4613)
• Valve model and size
• Power supply type
• Control signal type
• Required accessories and adapters

Example: EL4613 actuator for LE33 DN20 valve, 24Vac power, 0-10Vdc input signal, with connection adapter and EL4911 connector.