3KW to 15KW across 6 models — one platform covers forklifts, electric buses, and 200KW hydrogen fuel cell systems
99% thermal efficiency — your vehicles convert nearly all input power to usable heat, with minimal draw on the battery
Self-regulating PTC element — no external temperature controller needed; overheating is physically impossible by design
IP67-rated, CAN & LIN bus compatible — integrates into your existing vehicle architecture without custom interfaces. Titan-E10 and Titan-E15 are ECE-R10 certified for electromagnetic compatibility.
ODM available — custom voltage, power output, and connector specs for your production line
Where Vvkb PTC Coolant Heaters Are Used
Electric Bus & Coach
Your bus has no engine waste heat — passengers freeze in winter without a dedicated heating source. The PTC coolant heater warms the cabin via the hydronic loop and pre-conditions the battery pack before departure, maintaining range in sub-zero temperatures.
Recommended: Titan-E4 (350V 5KW)
Electric Truck & Commercial Vehicle
Battery performance drops sharply below 14°F (-10°C). Pre-heating the battery pack to 59–77°F (15–25°C) before charging or operation restores full capacity and extends battery lifespan — critical for fleets running overnight in cold regions.
Recommended: Titan-E4 / Titan-E5
Passenger EV & Plug-In Hybrid (PHEV)
Battery EVs and PHEVs have no engine waste heat for the cabin — and below -4°F (-20°C), a heat pump alone can’t keep up. The PTC coolant heater warms cabin air through the heater core and pre-conditions the pack for fast charging. In a PHEV it covers the gap whenever the engine shuts off in electric mode.
Recommended: Titan-E4 (350V 5KW)
Forklift, Construction Machinery & Backup Power
Indoor electric forklifts and outdoor construction equipment need reliable warmth during cold-weather shifts. The Titan-E3 runs on 80V — compatible with most industrial EV platforms — and draws low standby current when the system is dormant.
Recommended: Titan-E3 (80V 3KW)
Hydrogen Fuel Cell Systems
PEMFC stacks cannot cold-start below 14°F (-10°C). The PTC coolant heater pre-warms the coolant loop to 149–167°F (65–75°C) before ignition — allowing reliable cold starts down to -22°F (-30°C). Once the stack reaches operating temperature, it self-sustains; the heater steps back automatically.
Recommended: Titan-E4 Pro / E5 / E10 / E15 (600V, matched to 60–200KW stack output)
Battery Energy Storage Systems (BESS)
Grid-scale and commercial energy storage systems (ESS) lose charging efficiency below 32°F (0°C). A PTC coolant heater pre-warms the battery pack to 59–95°F (15–35°C), so your ESS charges fast and holds cycle life through cold seasons. The self-regulating element runs unattended for years — no controller to fail across a 10–15 year storage deployment.
Recommended: Titan-E4 / Titan-E5
How the Titan-E Heats Your System
A PTC coolant heater — also called a high-voltage water PTC (wPTC) heater — warms your coolant loop with a self-regulating ceramic element instead of a fuel burner. The Titan-E doesn’t just heat coolant — it does it faster and more efficiently than conventional liquid heaters, thanks to two design decisions that work together.
S-Shaped Flow Channel
Coolant enters cold and exits hot — but the path matters. The S-shaped wave channel maximizes contact time between the coolant and the PTC heating surface, extracting more heat per liter than a straight-flow design. The wavy runner surface increases turbulence, eliminating cold spots.
Self-Regulating PTC Element
As the PTC ceramic element heats up, its electrical resistance rises sharply — automatically reducing current draw. No thermostat. No external controller. No relay to fail. When your coolant reaches the target temperature, the heater holds it there without any intervention from your vehicle’s BMS.
One-Piece Die-Cast Housing
The entire assembly is die-cast as a single unit — no joints, no gaskets between sections. Combined with IP67 sealing on all connectors, the Titan-E handles vibration, moisture, and thermal cycling that would degrade a multi-piece design over time.
The Titan-E Series — 6 Models, One Platform
Which Titan-E Is Right for Your Application?
| Model | Voltage | Power | Best For |
|---|---|---|---|
| Titan-E3 | 80V | 3KW | Forklifts, construction machinery, backup power |
| Titan-E4 | 350V | 5KW | EV air conditioning, light commercial vehicles |
| Titan-E4 Pro | 600V | 5KW | Hydrogen fuel cell systems 60–80KW |
| Titan-E5 | 600V | 7KW | Hydrogen fuel cell systems 80–120KW |
| Titan-E10 | 600V | 10KW | Hydrogen fuel cell systems 120–160KW |
| Titan-E15 | 600V | 15KW | Hydrogen fuel cell systems 160–200KW |
Not sure which model fits your system? Send us your voltage range, coolant flow rate, and target output — we’ll confirm the right spec within 24 hours.
Titan-E10 / Titan-E15 external dimensions
Full Technical Specifications
| Model | Titan-E3 | Titan-E4 | Titan-E4 Pro | Titan-E5 | Titan-E10 | Titan-E15 |
|---|---|---|---|---|---|---|
| Specification | 80V 3KW | 350V 5KW | 600V 5KW | 600V 7KW | 600V 10KW | 600V 15KW |
| Output Power | (Coolant=0°C , 10L/min) 3000W±10% | (Coolant=0°C , 10L/min) 5000W±10% | (Coolant=0°C , 10L/min) 5000W±10% | (Coolant=0°C , 10L/min) 7000W±10% | (Coolant=0°C , 10L/min) 10000W±10% | (Coolant=0°C , 10L/min) 15000W±10% |
| Low Voltage | Voltage range: 9V~16V, Un=13.2V, Imax=70mA, ≤1mA when sleeping | Voltage range: 9V~16V, Un=13.2V, Imax=70mA, ≤1mA when sleeping | Voltage range: 9V~36V, Un=12/24V, Imax=150mA, ≤1mA when sleeping | Voltage range: 9V~36V, Un=12/24V, Imax=150mA, ≤1mA when sleeping | Voltage range: 9V~36V, Un=12/24V, Imax=80mA, ≤1mA when sleeping | Voltage range: 9V~36V, Un=12/24V, Imax=80mA, ≤1mA when sleeping |
| High Voltage | Voltage range: 60V~100V Un=80V, Imax=37.5A | Voltage range: 250V~450V Un=300V, Imax=30A | Voltage range: 450V~750V Un=600V, Imax=25A | Voltage range: 450V~750V Un=600V, Imax=25A | Voltage range: 450V~750V Un=600V, Imax=33A | Voltage range: 450V~750V Un=600V, Imax=50A |
| Pressure Resistance | ≥1900Vac/2800Vdc | ≥1900Vac/2800Vdc | ≥2100Vac/3000Vdc | ≥2100Vac/3000Vdc | ≥2500Vac/3500Vdc | ≥2500Vac/3500Vdc |
| Insulation Resistance | ≥50MΩ | ≥50MΩ | ≥100MΩ | ≥100MΩ | ≥100MΩ | ≥100MΩ |
| Protection Class | IP67 | IP67 | IP67 | IP67 | IP67 | IP68 |
| Application Scenarios | Forklifts, Construction machinery, Backup power | New Energy Vehicle Air Conditioning | 60~80KW fuel cell system | 80~120KW fuel cell system | 120~160KW fuel cell system | 160~200KW fuel cell system |
System Architecture & Hardware Design
Every Titan-E unit runs on two isolated automotive-grade MCU chips — one handling low-voltage control signals (CAN/LIN), one managing high-voltage power switching (IGBT). The two sides are fully isolated at ≥1500V, so a fault on the power side never reaches your vehicle’s control network.
Titan-E hardware architecture — dual MCU, isolated high/low voltage domains, CAN & LIN bus output
| Project | Parameter |
|---|---|
| Low voltage input voltage | 9V~36V |
| Low voltage input current | < 150mA |
| Dormant current | < 1mA |
| High and low voltage isolation | ≥1500V |
| High voltage input voltage | 450V~750V |
| High voltage input current | < 35A |
| CAN Communication | 250Kbps |
| LIN Communication | 19.2Kbps |
| Operating temperature | -40°C~120°C/-40℉~248℉ |
Operating temperature range: -40°F to 248°F (-40°C to 120°C) — tested for year-round operation in all climates.
Titan-E10 Pressure drop curve
Vvkb Coolant Heater Titan-E10 Voltage Power Curve
Why Manufacturers Choose Vvkb
30 Years of Thermal Management Manufacturing
Vvkb has been manufacturing vehicle heaters since 1996 — before most EV brands existed. Your engineering team gets access to 30 years of application data, failure analysis, and cold-climate testing across 53 countries.
ODM From Day One
Your production line has specific voltage rails, connector standards, and mounting constraints. Vvkb’s engineering team has delivered custom PTC heater designs for more than 15 vehicle manufacturers — send your specs, and we’ll build to them. 3D STEP files, 2D drawings, and datasheets are available on request, so your engineers can package the unit into the vehicle layout before committing to tooling.
CE Certified, Built for Real-World Conditions
Every Titan-E unit is CE certified and tested to IP67 or IP68. Titan-E10 and Titan-E15 carry ECE-R10 electromagnetic compatibility certification — required for vehicle type approval in Europe and most regulated markets. The PTC element is rated for 10+ years of continuous operation, with no external temperature controller to fail. Every Titan-E model is engineered to ISO 26262 functional safety and ISO 16750 environmental standards — the framework OEM engineering teams require for design-in. Each unit ships with a 2-year warranty backed by lifelong technical support.
Frequently Asked Questions
Vvkb is the manufacturer — we design, tool, and build every Titan-E unit in our own facility, not a trading supplier reselling other factories' parts. You get direct engineering support, ODM control over voltage and connectors, and traceable quality from one source.
The PTC element is self-regulating. When flow stops, element temperature rises, resistance spikes, and power draw drops to near zero automatically — no burnout, no thermal runaway. This is a physical property of PTC ceramics, not a software protection that can glitch.
Each model is rated for a voltage range, not a fixed point — for example, the Titan-E5 operates across 450–750V. IGBT-based switching with overcurrent protection handles transient spikes. The low-voltage control side is isolated from the high-voltage power domain at ≥1500V, so bus fluctuations don't affect control signal integrity.
Yes — the heated coolant circulates through your existing thermal management loop. Your system architecture determines how flow is distributed between the battery pack and the heater core. Vvkb's engineering team can advise on flow rate requirements for dual-function setups based on your vehicle's thermal load.
Standard production lead time is 45–60 days. MOQ and sample availability depend on the specific model and configuration. For ODM projects with custom specs, contact us early — our engineering team will confirm feasibility and timeline before you commit to tooling.
Heat pumps lose efficiency below 14°F (-10°C) and typically cannot operate below -4°F (-20°C). PTC coolant heaters operate reliably at -40°F (-40°C) with no performance degradation. Many EV manufacturers use a heat pump as the primary system and a PTC heater as the cold-weather backup — the Titan-E is designed for exactly that role.
All Titan-E models are CE certified. Titan-E10 and Titan-E15 additionally carry ECE-R10 electromagnetic compatibility certification, meeting vehicle type approval requirements in Europe and most regulated markets. Protection class is IP67 (Titan-E3 through E10) and IP68 (Titan-E15). Certification documentation is available on request.
Ready to Spec the Right Heater for Your System?
As a PTC coolant heater manufacturer and supplier, Vvkb has shipped to vehicle makers and system integrators across 53 countries since 1996. Sample units are available for evaluation, with ODM specs built to your production line.