Description

PR1-E-24kW High-Capacity Single-Phase Burst Fire Power Controller

The PR1-E-24kW is the high-capacity controller in the PR1-E Series, engineered to manage 24kW (100A) heating loads in HVAC and industrial systems. It delivers efficient, precise control through burst fire technology, minimising electrical interference and ensuring stable load operation.

Equipped with over-temperature trip, phase and sensor fault detection, and alarm relay outputs, the PR1-E-24kW provides robust protection for demanding installations. Designed for large-scale HVAC heater batteries, it supports multiple control inputs, has a rugged enclosed design, and comes CE-marked for compliance.

This controller is the ideal choice for heavy-duty heating applications requiring maximum performance, safety, and reliability.

Applications

• Large HVAC heater batteries

• Industrial heating loads

• Air handling systems

• Commercial heating installations

• Large-scale resistive heating equipment

Features

• High power capacity: up to 24kW (100A)

• Burst fire control for smooth and efficient power delivery

• Over-temperature protection: trip at 90°C, reset at 85°C

• Alarm relay with LED fault indication (2A @ 125V AC)

• Phase and sensor loss detection

• Multiple control input options: 0–10V DC, 0–5V DC, 5kΩ potentiometer

• Rugged enclosed design with heatsink cooling

Technical Specifications

• Power Rating: 24kW (100A)

• Input Voltage: 230V RMS ±10%

• Frequency: 50/60Hz

• Control Input: 0–10V DC (default), 0–5V DC, or 5kΩ potentiometer

• Alarm Relay: 2A @ 125V AC (voltage-free contacts)

• Thermal Protection: Trip at 90°C ±1°C, reset at 85°C ±1°C

• Terminals: 35mm² clamp blocks | Torque 4Nm

• Fusing: 125LET fast-acting semiconductor fuse

• Cooling: Natural convection, with vertical mounting fins

• Dimensions: 200 x 155 x 120mm

• Weight: 2.8kg

Typical Applications

• Large HVAC heater batteries

• Industrial air handling units

• High-capacity process heating systems

The PR1-E-24kW is the largest model in the PR1-E Series, delivering 24kW (100A) of heating control capacity. Designed for heavy-duty HVAC and industrial heating loads, it ensures safe, efficient performance with built-in protections, alarms, and easy-to-read LED status indicators.