EPack — compact thyristor power controller, 1/2/3 phase, up to 125 A, up to 500 V

Country: United Kingdom · Model: EPack

The EPack compact thyristor power controller is made in single-phase, two-phase and three-phase versions for currents up to 125 A at 100–500 V. It is designed for electric heating, from a single heater to a three-phase furnace, and is mounted in the cabinet with no gaps between units.

Versions: 1PH single-phase; 2PH three-phase load, two phases controlled; 3PH all three phases controlled
Rated current: 1PH: 1–125 A; range up to 125 A
Voltage: 100–500 V
Modes: phase-angle control, burst firing

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Technical specifications

Versions	1PH single-phase; 2PH three-phase load, two phases controlled; 3PH all three phases controlled
Rated current	1PH: 1–125 A; range up to 125 A
Voltage	100–500 V
Modes	phase-angle control, burst firing
Regulation	by true power; current limiting
Loads	constant and variable resistance, short-wave IR emitters, loads through a transformer
Diagnostics	load break and partial load break (PLF/PLU), alarms; in 3PH, per-phase measurements, impedance, energy counter, reactive power
Inputs	analog and logic
Communication	EtherNet/IP, Modbus TCP, ProfiNet; EtherCAT for 1PH
Cybersecurity	enhanced protection (according to the manufacturer)

Replacement for

ROT-63 (EPack-1PH, single-phase, up to 125 A, up to 500 V)

selected by purpose and main parameters, please confirm with the manager

Replacement pages: РОТ-63, РОТ-630, РОТ-630М

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

The series has three versions. EPack-1PH is a single-phase controller for 1–125 A. EPack-2PH controls a three-phase load through two phases, which is economical for balanced loads connected directly or through a transformer; burst firing with whole cycles creates no harmonics and reduces reactive power consumption. EPack-3PH regulates every phase, so it holds the setpoint accurately even on an unbalanced load. The modes are phase-angle control and burst firing, with regulation by true power and current limiting. Current and voltage measurements provide diagnostics of load break and partial load break and alarms, and the 3PH also offers impedance monitoring, an energy counter and reactive power. For communication there are EtherNet/IP, Modbus TCP and ProfiNet, with EtherCAT added in the 1PH.

How to choose

The number of phases is chosen by the load. For one heater the 1PH is suitable, for a balanced three-phase furnace the 2PH is more economical, and if the phases are loaded unevenly the 3PH is needed. The single-phase EPack-1PH is suitable for replacing the ROT-63 and other low-current thyristor controllers when digital communication with a PLC is required. For currents above 125 A the same range has the modular EPower for 50–630 A, and for simple tasks without fieldbuses the EPack Lite and EFit.

Request a price and lead time

EPack — compact thyristor power controller, 1/2/3 phase, up to 125 A, up to 500 V. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

What is the maximum current of EPack?

The series is rated for currents up to 125 A; for the 1PH version the range is 1–125 A at 100–500 V.

How does EPack-2PH differ from 3PH?

The 2PH controls a three-phase load through two phases and suits balanced loads. The 3PH regulates every phase, so it also works on an unbalanced load.

Which industrial networks does EPack support?

EtherNet/IP, Modbus TCP and ProfiNet, and the single-phase version also supports EtherCAT.

What load diagnostics does EPack have?

Load break and partial load break and alarms. The 3PH additionally has impedance, an energy counter and reactive power.