High Voltage PTC Heaters

High Voltage PTC Heaters for Electric Vehicles & Industrial Applications

KLC High Voltage PTC heater for electric trucks, buses, and special EVs — STW Type of High Voltage PTC heater

KLC High Voltage PTC Heaters deliver fast, reliable, and energy-efficient heating across a wide voltage range from 12V to 999V, with UL/CSA approvals for 12V–600V systems. Designed for electric vehicles, industrial machinery, and battery heating, our heaters ensure stable thermal performance while extending equipment life and optimizing energy usage.

With decades of R&D experience and IATF 16949-certified manufacturing, KLC provides customizable solutions tailored to your specific high-voltage heating needs.

Key Features

Self-Regulating Technology: Automatically limits current as temperature rises, preventing overheating and energy waste.
Wide Voltage Range: 12V ~ 999V (UL/CSA approved: 12V ~ 600V), compatible with EVs, industrial machinery, and high-power systems.
High Power Output: Up to 30,000W (depending on size and design) for fast heating even in extreme environments.
Multi-Stage Heating: Adjustable power output for optimized energy use, cabin comfort, or process heating.
Safety & Reliability: Certified under IATF 16949, with UL, CSA.
Versatile Applications: EV cabin heating, battery heating, cold-start assistance, industrial heating, and more.

High Voltage PTC Heater Models

UL/CSA approvals for 12V–600V
12V~999V: STW type
12V~500V: MH(W), MSH(W), SH(W), TH(W) and OH(W) types

Voltage Range	Model	Dimensions (mm)	Tube No.	Fin Width (mm)	Fin Pitch (mm)	Standard	Wired
12~500V	MH(W)	26 x 90 x L (70~492)	2 or 3	90	1.2 / 2.0 / 2.6	Terminal type	Available
12~500V	MSH(W)	26 x 65 x L (70~492)	3	65	1.68 / 2.6	Terminal type	Available
12~500V	SH(W)	26 x 65 x L (70~492)	2	65	1.68	Terminal type	Available
12~500V	TH(W)	26 x 45 x L (70~492)	2	45	2.0	Terminal type	Available
12~500V	OH(W)	26 x 30 x L (30~492)	1	30	1.68	Terminal type	Available
12~ 999V	STW	10 x 10 x 10 ~ 999 × 337.5 × 25	–	–	–	–

Applications

Charging Stations: Efficient heating during battery charging, especially in cold climates, improving charging efficiency and equipment longevity.
Electric Trucks: Consistent heating for vehicle performance, passenger comfort, and component protection.
Electric Buses: Stable cabin and system heating, enhancing passenger comfort and operational efficiency.
Construction Machinery: Uniform heat for electric construction equipment, preventing downtime due to cold temperatures.
Agricultural Machinery: Maintains optimal temperatures for electric agricultural machinery for effective operation.
Electric Cars: Rapid cabin and component heating, improving comfort and energy efficiency.
Special Electric Vehicles: Ideal for emergency vehicles, service trucks, and other specialized EVs requiring precise heating.
Industrial Equipment: Supports machinery requiring controlled heating for processes or sensitive components.
Railway & Special-Purpose Vehicles: Reliable heating in harsh operational environments.
HVAC Systems: Efficient air heating for commercial and residential buildings.

Request a Custom Solution →Contact KLC Team Now!

Why Choose KLC High Voltage PTC Heaters?

Fast Warm-Up – Efficient heating even at -20℃ cold-start conditions.
Energy Efficient – Reduces power consumption up to 20% compared with conventional heaters.
Automotive & Industrial Grade – IATF 16949 certified, UL, CSA approvals ensure global compliance.
Engineering Support – Full 3D simulations, lab testing, life-cycle validation, and integration assistance.
Customizable Designs – Flexible sizing, power output, and voltage options to meet your system needs.

Technical Specifications

	Range
Voltage	12V ~ 999V (UL & CSA approved: 12V ~ 600V)
Power Output	Up to 30,000W (depends on size & design)
Heating Element	PTC Ceramic (self-regulating)
Certifications	IATF 16949, UL, CSA, VDE (optional)
Applications	EV cabin heating, battery heating, industrial heating, cold-start assistance

FAQs – High Voltage PTC Heaters

What voltage ranges do KLC High Voltage PTC Heaters support?

12V–999V. UL/CSA approvals available for 12V–600V systems.

What are the available models for 400~500V applications?

MH(W), MSH(W), SH(W), TH(W), OH(W), each with different dimensions, tube numbers, and fin configurations. Learn more…

Are these heaters certified?

Yes. IATF 16949 certified, with UL, CSA, and optional VDE approvals.

What applications are suitable?

EV cabin & battery heating, charging stations, electric trucks & buses, construction & agricultural machinery, special-purpose vehicles, industrial equipment, railway applications, HVAC systems.

Do they come with wired options?

Yes, all 400~500V models are wired; STW model wiring is customizable.

How to choose the right model?

Depends on voltage, dimensions, power, operating temperature, and application. KLC’s engineers can provide guidance for optimal selection. See step by step guide to select your PTC heater and Contact us for your thermal solutions.