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W SERIES · NARROW-PACKAGE PTC COOLANT HEATER
W Series 2–8 kW Compact High Voltage PTC Coolant Heater
A 110 mm-wide liquid-heater package for electric light-duty truck thermal systems, with electric bus and construction-machinery programs evaluated project by project.
Confirm the rated-power window, WA connector release, coolant circuit and vehicle validation scope before quotation or production use.
2–8 kW
W-series range: 2–8 kW, 200–800 V DC. The supplied parameter table lists 3.7 kg. Confirm the ordered configuration, electrical interfaces and released drawing.
312 × 110 × 139 mm
Published package reference
Ø25 mm
Published coolant-port reference
3
Vehicle groups shown in source artwork
SELECTION LOGIC
Start with Package Width and Heat Duty
Review the 110 mm-wide package, electrical range and coolant interfaces against your installation requirements.
110 mm
Narrow Installation Width
Evaluate the long, narrow enclosure where lateral package space is constrained.
≤8 kW
Lower-Power Thermal Duty
W-series heating power: 2–8 kW. Confirm the selected output and rating conditions.
LDT
Light-Duty Truck Priority
The product-specific title artwork names light-duty trucks as the primary use case.
PUBLICATION HOLD
W-Series Power and Voltage Selection
W-series range: 2–8 kW, 200–800 V DC. The supplied parameter table lists 3.7 kg. Confirm the ordered configuration, electrical interfaces and released drawing.
A
Heating Power
2–8 kW; maximum power 8 kW; primarily used in light-duty trucks.
B
Operating Voltage
W-series range: 2–8 kW, 200–800 V DC. The supplied parameter table lists 3.7 kg. Confirm the ordered configuration, electrical interfaces and released drawing.
TECHNICAL BASELINE
W-Series Compact Coolant-Heater Specifications
Use these supplied values for early engineering review and the released project documentation for final limits, tolerances and evidence.
Rated power
W-series range: 2–8 kW, 200–800 V DC. The supplied parameter table lists 3.7 kg. Confirm the ordered configuration, electrical interfaces and released drawing.
Rated voltage
Customizable — exact nominal voltage to confirm
Operating voltage
200–800 V listed in the supplied technical panel; confirm W configuration
Package reference
312 × 110 × 139 mm
Coolant ports
Ø25 mm reference
Insulation resistance
≥100 MΩ at DC 1000 V, high-voltage section
Dielectric strength
≥1200 V, ceramic heating element
Peak current
≤1.5 × rated current
Ingress protection
IP67 listed; report and configuration applicability to confirm
Storage / operating temperature
−40 °C to +85 °C / −40 °C to +85 °C
Communication
CAN bus with enable control
Control
PID, fault self-diagnosis and automatic power limiting
W-series range: 2–8 kW, 200–800 V DC. The supplied parameter table lists 3.7 kg. Confirm the ordered configuration, electrical interfaces and released drawing.
MECHANICAL PACKAGE
Validate the 110 mm-Wide Heater Envelope
The narrow enclosure and opposed coolant connections can solve one packaging constraint while creating another. Review the complete service envelope, not only the housing dimensions.
- 312 × 110 × 139 mm published reference
- Opposed Ø25 mm coolant-port geometry
- Mounting feet, fasteners and installation orientation
- Hose engagement, bend radius and drainage
- Connector mating and service clearance
- Released tolerances, vibration and mounting loads
INTERFACE RELEASE
Confirm the WA Connector and Coolant Interfaces
The source-folder label associates this WA configuration with Amphenol, but the artwork does not publish the exact connector series, part numbers, keying or mating definitions.
- High-voltage connector series and mating part
- Low-voltage / CAN connector and pinout
- Keying, HVIL, current rating and grounding
- Connector sealing and service access
- Ø25 mm hose specification and clamping
- Configuration-specific drawing and bill of materials
CONTROL & PROTECTION
Turn Listed Functions into a Vehicle Test Matrix
CAN, PID and protection names help screening; a release needs thresholds, reactions, feedback, recovery and revision traceability.
01
Command
CAN requests, enable logic, wake-up, shutdown and restart behavior.
02
Regulation
PID ownership, power demand, measured values and automatic limiting.
03
Protection
Voltage, current, short-circuit and overtemperature trigger conditions.
04
Evidence
Fault injection, derating, recovery, diagnostics and controlled software revision.
APPLICATION EVALUATION
Prioritize Light-Duty Trucks; Evaluate Bus and Off-Highway Programs
The W-Series title artwork specifically prioritizes light-duty trucks. The supplied application artwork also shows electric buses and construction machinery, so those paths remain project-specific engineering evaluations.
- Battery preheating or temperature conditioning
- Cabin and auxiliary liquid-heating circuits
- 2–8 kW thermal-duty fit to confirm
- Commercial-vehicle or off-highway voltage window
- Available 312 × 110 × 139 mm package space
- Vibration, dust, coolant and validation scope
PRODUCT VIEWS
Inspect the Housing, Mounts, Ports and Connectors
Use the supplied views for early screening and the released drawing for production packaging.
QUALIFICATION EVIDENCE
Request Records for the Exact W-Series Configuration
Factory and certificate-display artwork can support supplier review, but product approval should rely on controlled records that match the exact heater, connectors, software and validation scope.
- Released product specification and 2D / 3D drawing
- WA connector and mating-component definitions
- CAN document and software revision
- Electrical, EMC, ingress and environmental reports
- Prototype inspection and project validation records
- Approved warranty and commercial terms
FAQ
W-Series Compact Coolant-Heater Questions
Answers separate supplied facts from details that need a controlled project release.
The supplied W-Series title artwork describes a high-efficiency coolant heater with a maximum power of 8 kW and identifies light-duty trucks as the primary application. The supplied application artwork also depicts electric buses and construction machinery; every project still requires a duty-cycle and interface review.
W-series range: 2–8 kW, 200–800 V DC. Confirm the ordered configuration and rating conditions.
The supplied technical panel lists 200–800 V and describes rated voltage as customizable. Confirm nominal voltage, minimum and maximum DC voltage and transient requirements for the exact W-Series configuration.
The product-display artwork lists 312 × 110 × 139 mm and the interface drawing marks Ø25 mm coolant ports. Use those figures as an early packaging reference and request the released drawing for tolerances, mounting and hose engagement.
The source-folder label associates this WA configuration with Amphenol, but the supplied artwork does not publish an exact connector series, part number, keying or mating component. Confirm those items before publishing compatibility or specifying the vehicle harness.
The supplied technical panel lists CAN bus with enable control, PID control, fault self-diagnosis, automatic power limiting, and overvoltage, undervoltage, overcurrent, short-circuit and overtemperature protection. Thresholds and response behavior require project documentation.
The supplied application artwork shows electric buses, electric trucks and construction machinery. The W-Series title artwork specifically prioritizes light-duty trucks; suitability for each vehicle depends on heat duty, voltage, coolant circuit, packaging, vibration, contamination and validation requirements.
Send the vehicle type, voltage window, required heat output, coolant and flow data, temperature and pressure limits, installation envelope, connector requirements, CAN requirements, validation scope, sample timing and forecast volume.
PROJECT BRIEF
Send the Inputs Needed for a W-Series Recommendation
A useful response depends on the thermal duty, package space, exact interfaces and release evidence—not only a target power number.
01
Vehicle & Duty
Light-duty truck, bus or machine; operating profile and ambient conditions.
02
Thermal Loop
Heat duty, coolant, flow, inlet/outlet temperatures, pressure limits and target time.
03
Electrical
Nominal/min/max voltage, connector requirements, grounding, CAN and enable logic.
04
Program
Package envelope, sample timing, validation scope, SOP and forecast volume.