YOU MUST READ THIS BEFORE INSTALLATION

ELECTRICAL SAFETY

INSTALLATION REQUIREMENTS

USER RESTRICTIONS

USAGE ENVIRONMENT

HOT SURFACE WARNING

WARNING: RISK OF ELECTRIC SHOCK

Always consult the Installation & Maintenance Instructions

before connecting this product to the power supply.

WARNING: Disconnect Power Before Servicing

Ensure the electrical supply is safely disconnected before

connecting to any supply, load, or control terminals.

WARNING: Installation by Qualified

Personnel Only

This product must only be installed or fitted by

a competent, qualified installer familiar with

the relevant electrical standards and

installation practices.

WARNING: Not for Use by Vulnerable Individuals

This product is not intended for use by persons

(including children) with reduced physical, sensory or

mental capabilities, or lack of experience and

knowledge, unless they are supervised or instructed

by a person responsible for their safety.

WARNING: Industrial Use Only

This is an industrial-grade product

and is not intended for household

use.

WARNING: Hot Surfaces

On certain models, surfaces marked

with this symbol become hot during

use. Avoid direct contact and follow all

thermal safety precautions.

More Info: https://united-automation.com/general-product-safety-regulation-gpsr/

9 December 2025 | Issue: 5 Page

1 of 2

Variable AC Voltage Regulators

EVR Series

X10767

EVR-1kW | EVR-4kW | EVR-6kW

Phase-Angle Power Controller

0044 (0) 1704-516 501

enquiries@united-automation.com

www.united-automation.com

CONTACT US:

KEY FEATURES:

The

EVR Series Phase-Angle Power Controllers from United Automation are

engineered for smooth proportional control of electrical power in single-phase 230V

applications. Available in 1kW, 4kW, and 6kW ratings, these compact “Mini Stack” units

integrate high-speed semiconductor fuses, convection-cooled heatsinks, and a range of

control signal options.

Each unit operates in phase-angle mode, ensuring precise control over voltage and

current delivery to the connected load. Built with reliability and ease of installation in

mind, the EVR Series is ideal for demanding industrial environments that require

accurate, efficient temperature or process control.



Wide range of control signal

options (manual, voltage, or

current input).



Convection air-cooled

heatsink.



Soft-start function (adjustable

0–20 seconds) to protect loads

and extend component life.



Integrated SCR-type (Triac

protection) high-speed fuse.



Compact, enclosed design for

easy mounting and wiring.



Available in metal enclosure,

DIN-rail, or back-plate

configurations.



Rugged construction for

industrial use with full isolation

and overvoltage protection.

TECHNICAL SPECIFICATIONS

EVR-1kW

EVR-4kW

EVR-6kW

Current Rating

4A

17A

25A

Mains Voltage

230V AC +10% -6%

Control Signal Span (Min.)

0–5V DC

Control Signal Span (Max.)

0–25V DC

Control Signal Zero Offset

0-30% of Span

Signal Input Resistance

5kΩ ±20%

Manual Potentiometer

2kΩ, 5kΩ or 10kΩ

Soft Start Time Constant

0–20 seconds adjustable

Isolation Voltage

2500V RMS

Control Opton-Auxiliary Output

5V DC

Triac limiting RMS current

26A

26A

41A

Peak Single Cycle Surge Current

250A

Max Peak Voltage

600V

Max. Working Temperature

up to 65°C Operational

Replacement Fuse

16 A, 660 V

AC, 10×38

mm, GRB

high-speed

semiconductor

fuse (gR

curve)

20 A, 660–690 V

AC, 10×38 mm,

GRB/Protistor

high-speed

semiconductor

fuse (gR curve)

30 A, 660 V AC,

10×38 mm, GRB

high-speed

SCR-type fuse

(gR curve)

Storage Temperature

0°C to +85°C

Mounting Options

Panel mount -

open style

PCB

Panel-mounted,

fully enclosed

with cable

glands

Metal enclosure,

DIN-RAIL

mounting c/w

Perspex cover,

Back-plate

mounting c/w

Perspex cover.

SKU

Dimensions

(D)x(W)x(H)

Fixing Centres

A407324-AVR

130 x 95 x 78 mm

4x4.7mmØ; FC: 75mm (W) x 119 mm (L)

A407315

150 x 90 x 90 mm

4x5mmØ; 135mm (D) x108mm (W)

A407316-(ENC)

140 x 99 x 87 mm

4x4.5mmØ; 75mm (W) x 120 mm (L)

A407316-(DIN)

112 x 96 x 87 mm

Inc. T535 DIN Rail & Perspex cover

A407316-(AVR)

130 x 95 x 78 mm

4x4.7mmØ; FC: 75mm (W) x 119 mm (L)

APPLICATIONS:

The EVR Series controllers are

designed for precision power

control in a wide range of heating

and industrial processes, including:



Industrial and process heaters



Ovens, dryers, and furnaces



Air curtains and hot plates



Ventilation and HVAC systems



Electroplating and chemical

process control



Controlled rectifiers and

transformer regulation