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K SERIES · DUAL FLYING-LEAD ARCHITECTURE
K Series 2–12 kW High Voltage Coolant Heater with HV and LV Flying Leads
A compact PTC liquid-heater configuration for electric commercial-vehicle and off-highway programs that want both electrical interfaces supplied as cable assemblies.
Freeze the high-voltage pigtail, low-voltage control lead, coolant circuit and mounting envelope as one project release.
2–12 kW
Technical-panel rated power
200–800 V
Published operating range
225 × 170 × 105 mm
Published product envelope
Ø25 mm
Published coolant-port reference
DUAL-LEAD BOUNDARY
Release Two Cable Assemblies, Not Just One Heater
The supplied product views show an orange high-voltage pigtail and a black low-voltage pigtail. Their exact parts and electrical definitions are not stated in the artwork, so both must be controlled with the heater configuration.
HV
High-Voltage Lead
Confirm cable construction, length, connector, mating part, keying, HVIL, grounding and service bend radius.
LV
Low-Voltage Lead
Confirm conductor count, gauge, pinout, CAN, enable, power, ground, termination and strain relief.
MECHANICAL PACKAGE
Use the Short Aluminum Housing as the Packaging Baseline
The K-Series enclosure and two opposed coolant ports create a different installation problem from the taller black-housing families.
Packaging checks
- 225 × 170 × 105 mm published envelope
- Ø25 mm published coolant-port reference
- Opposed hose connections and service clearance
- HV and LV lead routing and bend radii
- Mounting holes, fasteners and orientation
- Released tolerances and vibration loads
RELEASE SEQUENCE
Freeze the Interfaces in the Order the Vehicle Team Uses Them
Treat the product as an integrated thermal and electrical assembly.
01
Heat Duty
Set coolant, flow, inlet and outlet temperatures, target heat-up time and pressure limits.
02
HV Assembly
Freeze voltage window, cable, connector, HVIL, current limits, insulation and grounding.
03
LV Assembly
Freeze pinout, CAN, enable, feedback, diagnostics, termination and vehicle-harness ownership.
04
Package
Freeze ports, hose routing, mounting, cable clips, drainage, vibration and service access.
TECHNICAL DATA
K-Series Published Specification Baseline
The K-series range is 2–12 kW at 200–800 V DC. Confirm the ordered power, rated voltage and rating conditions for the selected configuration.
Rated Power
The K-series range is 2–12 kW at 200–800 V DC. Confirm the ordered power, rated voltage and rating conditions for the selected configuration.
Rated Voltage
Customizable — confirm the released project configuration
Operating Voltage Range
200–800 V
Product Size
225 × 170 × 105 mm in the supplied product display
Coolant Port
Ø25 mm shown in the supplied product display
Weight
4.3 kg
Insulation Resistance
≥100 MΩ at DC1000 V, high-voltage section
Dielectric Strength
≥1200 V, ceramic heating element
Peak Current
≤1.5 × rated current
Ingress Protection
IP67
Operating / Storage Temperature
−40 °C to +85 °C
Communication
CAN bus with enable control
Control
PID control, fault self-diagnosis and automatic power limiting
Protection
Overvoltage, undervoltage, overcurrent, short circuit and overtemperature
EMC
Class 3 is listed; request the applicable standard and report scope
Warranty
2 years is listed; confirm configuration and regional applicability
ELECTRICAL SAFETY
Translate Listed Protections into Vehicle-Level Test Cases
Feature names are not release evidence. Agree the trigger conditions, reaction, reporting, recovery and verification method for the exact hardware and software revision.
- Overvoltage and undervoltage behavior
- Overcurrent and short-circuit response
- Overtemperature derating and shutdown
- Insulation and dielectric verification
- Enable, restart and power-limiting logic
- Fault reporting and diagnostic persistence
A
Trigger
Define the electrical or thermal condition and measurement point.
B
Reaction
Define derating, shutdown, isolation and vehicle notification.
C
Recovery
Define latch, reset, restart and post-fault inspection rules.
D
Evidence
Tie each requirement to a test case and controlled record.
CONTROL INTEGRATION
Define Who Commands, Who Regulates and Who Records
The heater, vehicle controller and validation team need one agreed signal and fault matrix.
ECU
Vehicle Controller
CAN requests, enable logic, wake-up, shutdown, restart and power demand.
PTC
Heater Controller
PID regulation, measurement, derating, automatic power limiting and diagnostics.
DV/PV
Validation Record
Signal timing, thresholds, fault injection, recovery behavior and revision traceability.
APPLICATION EVALUATION
Evaluate the K Series for Bus, Truck and Construction-Machinery Thermal Circuits
The supplied title artwork names electric buses and trucks. Construction machinery is included here as an engineering evaluation path—not as a confirmed application. Final suitability depends on thermal duty, voltage, packaging, environment, interfaces and project validation.
- Battery preheating, cabin or auxiliary liquid heating
- Commercial-vehicle or off-highway voltage and power window
- Available 225 × 170 × 105 mm package space
- Dual-lead routing and connector service access
- Coolant circuit, duty cycle and temperature targets
- Vibration, dust, environment and validation scope
PRODUCT VIEWS
Inspect the Housing, Ports and Dual Cable Exit
Use these views for early review and the released drawing for production packaging.
QUALIFICATION PACKAGE
Request Records for the Exact K-Series Release
The source artwork references company certifications and patents. A vehicle program should qualify the exact heater, both cable assemblies, connectors, software and test scope using controlled records.
- Released product specification and 2D / 3D drawing
- HV and LV harness drawings and bills of materials
- Connector and mating-component definitions
- CAN document and software revision
- Applicable electrical, EMC, ingress and environmental reports
- Prototype inspection and project validation records
FAQ
K-Series Dual Flying-Lead Questions
Answers separate supplied facts from details that require a controlled project release.
The supplied imagery shows separate high-voltage and low-voltage flying leads exiting the heater housing. Cable length, connector termination, pinout, sealing, strain relief and vehicle-side responsibility must be defined for the released configuration.
The K-series range is 2–12 kW at 200–800 V DC. Confirm the selected configuration and rating conditions.
The supplied technical panel lists a 200–800 V operating range and describes rated voltage as customizable. Confirm the nominal voltage, minimum and maximum DC voltage and transient requirements for the exact project.
The supplied product-display artwork lists 225 × 170 × 105 mm and Ø25 mm coolant ports. Treat these as an early packaging reference and use the released drawing for tolerances, mounting and hose engagement.
Confirm cable length and exit direction, conductor size and insulation class, connector and mating part numbers, keying, HVIL, shielding or grounding requirements, bend radius and service access.
Confirm conductor count and gauge, CAN and enable assignments, power and ground, termination, labels, sealing, strain relief, diagnostics and harness ownership.
The supplied panel lists CAN bus with enable control, PID control, fault self-diagnosis, automatic power limiting, and overvoltage, undervoltage, overcurrent, short-circuit and overtemperature protection.
The supplied title artwork names electric buses and trucks. Construction machinery is included as an engineering evaluation path and must be confirmed against the duty cycle, voltage, coolant circuit, packaging, vibration, contamination and validation requirements.
Send the voltage window, heat duty, coolant and flow data, temperature and pressure limits, installation envelope, both harness definitions, CAN requirements, validation scope, sample timing and forecast volume.
PROJECT BRIEF
Send One Complete Input Set for the K-Series Review
The fastest useful response comes from combining thermal duty, both harness definitions and packaging constraints.
01
Electrical
Nominal/min/max voltage, current limit, grounding, insulation and HV interface.
02
Control
CAN protocol, enable logic, feedback, diagnostics, fault response and software revision.
03
Thermal
Heat duty, coolant, flow, temperatures, pressure limits and heat-up target.
04
Program
Vehicle, package, sample timing, validation scope, SOP and forecast volume.