Aux Heat EW4-800V DC – 10KW PTC Electric Water Heater

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Aux Heat EW4-800V DC – 10KW PTC Electric Water Heater

Safe, reliable and powerful auxiliary heating for high-voltage applications.

The EW4-800V DC is Grayson’s highest-output PTC electric water heater, delivering 10kW of variable heat output for demanding battery-electric and fuel cell vehicle applications. Ideal for larger coolant circuits or extreme cold conditions, the EW4-800V DC is built for seamless integration into 800V EV architectures, offering intelligent CAN-controlled capability, durable construction, and proven performance in low ambient off-highway and industrial environments.

Key Benefits

Maximum Heating Power

10kW output (nominal operating voltage 800V DC, coolant temp 60°C, flow rate 12L/min) handles demanding heating tasks.

Developed for 800V+ Architectures

Ready for the next generation of high-voltage battery electric and hydrogen fuel-cell electric applications.

Seamless Integration

Modular, plug-and-play design simplifies installation and system design, with intelligent thermal control via CAN or LIN.

Strong and Safe

Self-regulating PTC technology, IP6K9K-rated for durability and built-in safety features including high-voltage monitoring and no coolant flow detection.

Overview

Features

Technical

Applications

Overview

Features

Technical

Applications

Recommended Products

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Aux Heat EW3-800V DC – 7KW PTC Electric Water Heater

Compact 800V DC PTC electric water heater for electric and fuel cell applications.

Resistive Electric Water Heater

The Grayson Resistive Electric Water Heater series delivers critical heat to full electric, hydrogen or hybrid vehicles’ driver/passenger cabins or batteries in even the coldest of conditions.

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