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Cooler PE1

The PE1 line of air-to-liquid coolers offers compact, single-fan solutions for power electronics, traction motors, and inverters.

Available in 24V DC and 800V DC (standard) fan configurations, the PE1 offers flexible, plug-and-play solutions with optional integrated header tanks and CAN-enabled controllers. Proven globally, it ensures critical components maintain optimal temperatures, preventing overheating, derating, and premature failure, ensuring reliable and efficient operation in demanding applications.

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Overview

The PE1 line delivers compact, single-fan air-to-liquid coolers engineered to maintain stable coolant temperatures for power electronics, inverters, and traction motors. In a closed-loop system, coolant circulates via a pump through the components and rejects heat through the high-quality tube-and-fin radiator and integrated fan, providing proven passive cooling.

Models include 24 V DC fans and the new 800 V DC fan cooler (standard) for high-voltage platforms. Options such as integrated header tanks and Grayson’s Intelligent Thermal Controller with proprietary thermal logic offer enhanced control and simplified packaging.

Grayson also works with OEMs to configure or develop new coolers tailored to duty cycles, modelling ambient limits, coolant flow, heat rejection, and target temperatures to provide fully tested, proven, or custom solutions.

Features

With robust construction and efficient design, our coolers provide effective thermal management across a wide range of applications.

  • Air-to-liquid cooling: Keeps coolant at safe operating temperatures to protect inverters and motors.
  • 24V DC and 800V DC fans: Low- and high-voltage options for multiple platforms.
  • Compact footprint: Single-fan design for applications with restricted packaging space.
  • Optional header tanks: Simplifies coolant management and installation.
  • Smart CAN-enabled control: V3 controller optimises fan operation and stability.
  • Proven reliability: Over 100,000 coolers in service across multiple markets.
Technical

Dimensions, weights and cooling performance depend on PE1 model. For full overview of the PE1 technical specifications, contact our team.

Each technical element contributes to consistent performance, enabling the cooler to operate reliably in demanding environments.

  • Fan configuration: 1-fan
  • Voltage options: 24V DC / 800V DC (standard)
  • Options: Integrated header tank, CAN-enabled V3 controller
  • Design: Tube-and-fin air-to-liquid cooler
  • Applications: Power electronics, traction motors, inverters, stationary power
Model Variations

Our cooler range includes multiple variants tailored to diverse vehicle platforms, duty cycles, and space requirements.

  • 1A-6064-0A01 – 1-fan 800V DC high voltage cooling pack      
  • CP-6082-100 – 1-fan 24V DC system with integrated header tank         
  • CP-6082-000 – 1-fan 24V DC system without integrated header tank   
  • 1A-6808-0A00 – 1-fan 24V DC system, 2 x heat exchangers
  • GK-6508-400 – 1-fan 24V DC system with integrated header tank (LH)      
  • GK-6508-500 – 1-fan 24V DC system with integrated header tank (RH)      
  • 1A-6856-0A00 – 1-fan 24V DC system with fan controller and a thermistor interface
Voltage Options

24V DC / 800V DC

Supports both conventional and high-voltage vehicle platforms.
Fan Configuration

1-Fan Design

Compact, lightweight coolers for space-limited installations.
Air-to-Liquid Cooling

Tube-and-fin design

Transfers heat from coolant loop to airflow for reliable passive cooling.
Control Options

V3 Controller with CAN

Wide HV compatibility for integration across multiple BEV and FCEV platforms.
Download full specification sheet
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Compatible Applications

Product Benefits​

Discover why leading OEMs choose Grayson PE1 coolers to manage temperatures for inverters, traction motors, and power electronics.

Compact Cooling

Reliable thermal performance in a small, single-fan package.

High-Voltage Ready

800V DC fan model available as standard.

Plug-and-Play Integration

Supplied pre-assembled for fast deployment.

Flexible Configuration

Header tanks and smart controllers available to suit OEM needs.

Contact Us

Looking for more information about our thermal management products, aftermarket parts and servicing, or need technical support from one of our expert engineers? Complete the form below and we will respond as soon as possible.

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Discover More About Grayson

Grayson has spent over four decades supporting global vehicle sectors with high-performance thermal management technologies. We combine technical expertise with reliable service to maximise system performance.