Description

DMPR3-E-54kW 415V – Three-Phase Thyristor Power Controller (Enclosed)

The DMPR3-E 54kW is a fully enclosed three-phase thyristor power controller designed for reliable control of both resistive and inductive loads at 415V supplies. Built for demanding industrial environments, this unit offers user-selectable control modes including phase-angle, burst fire, or a hybrid combination of both, providing exceptional flexibility across heating and power regulation applications.

With integrated high-speed semiconductor fuses, robust heatsinking, and frequency tracking from 30–80Hz, the DMPR3-E performs consistently even where mains supplies are unstable. Accessible internal power and signal terminals, along with multiple cable entry points, make installation straightforward for panel builders and system integrators.

Ideal for furnaces, ovens, dryers, air curtains, ventilation systems, and transformer control, the DMPR3-E delivers dependable high-power regulation up to 54kW (75A).

Key Features

• Dual mode control: Phase-Angle, Burst Fire, or Hybrid operation
• Frequency tracking: 30–80Hz for unstable supply environments
• Integrated high-speed semiconductor fuses for protection
• Adjustable soft start ramp: 0–30 seconds from power up
• Selectable load type: Resistive or Inductive (SW4)
• Over-current trip and warning indication (LED2 / LED3)
• Accessible internal terminals for simplified installation
• Multiple cable entry knock-outs

Benefits of DMPR3-E-54kW

• Stable control in fluctuating power conditions
• Suitable for both heating and inductive applications
• Smooth power-up reduces stress on elements and transformers
• High protection level with built-in fusing and monitoring
• Reduced installation time for panel builders
• Robust enclosed construction for industrial environments

Applications

• Heating systems: furnaces, ovens, dryers
• Ventilation systems: air curtains, hot plates
• Inductive loads: transformers
• Industrial process heating and power control panels

Technical Specifications

Power Ratings

• 54kW (75A) @ 415V RMS nominal

Electrical

• Input Voltage: 415V RMS ±10%
• Frequency Range: 30–80Hz

Control Input Options

• Signal: 0–5V, 0–10V
• Manual: 5kΩ potentiometer
• 4–20mA input

Load Selection

• Resistive or Inductive (SW4 selectable)

Ramp Control

• Adjustable from 0 to 30 seconds on power-up

Over-Current Protection

• Trip level: 0–100mV DC or 0–25V DC
• Warning indication: LED2 / LED3 alternating pulse

Fusing

• 36kW model: 63ET high-speed fuse
• 54kW model: 100ET high-speed fuse
• Semiconductor type protection

Connections

• Phase Power: M6 stud terminal with nut & washer
• Earth: M6 stud terminal with clamp washer
• Cable Entry: 6 × 20mm knock-outs + 2 × 12mm holes (front side)
• Terminal Torque: 4.5 to 5.5Nm (power & earth)

Mechanical

• Dimensions (D × W × H): 232 × 340 × 124 mm
• Fixing Centres: 322 mm (W) × 200 mm (D) – 4 × 6mm holes
• Weight: 5.2 kg
• Maximum Operating Temperature: 65°C

This controller is ideal for industries requiring precise and reliable control of heating and ventilation systems.