Transportation & Rail Equipment One-Stop Fan Platform
A rail-grade RT series already benchmarked part-for-part against European brands — plus the EC axial, backward-curved, forward multi-wing and mixed-flow platforms behind them, applied across rail transit, trucks, marine and containers.
Why LONGWELL for Transportation & Rail
Five reasons mobile-equipment OEMs shortlist LONGWELL — each one tied to a released platform, a benchmarked part number or a test report, not to a brochure claim.
Dedicated rail programme platform
The LWBE(RT) and LWBA(RT) series — 280 to 400 mm class — is already specified into traction and auxiliary converters, air-conditioning exhaust units, inverter cooling units and locomotive filter cubicles.
One BOM across six incumbent brands
EBM, Rosenberg, ZIEHL-ABEGG, Airscrew, SIEMENS and NICOTRA/Gebhardt footprints are mapped model-for-model in the RT benchmarking matrix — see §3.
From 12 V mobile to 110 V vehicle bus
12 / 24 / 26 / 48 V mobile platforms are released; 80 V DC (50–100 V) and 110 V DC (60–143 V) vehicle buses have been evaluated and quoted on real programmes.
One EC motor platform behind all of them
Axial, backward-curved centrifugal, forward multi-wing centrifugal, mixed-flow and EC blowers — the right wheel for each on-board air path, not one wheel forced into every duty.
Original PDFs in one business day
Aerodynamic figures tested per AMCA 210/211, L10 bearing life to ISO 281, EMC to EN 55014 / FCC Part 15 — issued as original reports, complimentary for project-intent customers.
Why Transportation Is a Strategic Platform for LONGWELL
Transportation concentrates every capability the rest of the fan business develops separately. Wide-temperature electronics come from the heat-pump and cold-chain programmes. High-static compact wheels come from the EC retrofit range. Vibration, potting and surface-finish discipline come from years of export manufacturing behind LONGWELL's 35-year history and motor exports to 30+ countries.
The demand side is moving the same way. As ZIEHL-ABEGG frames it on their mobile applications segment page, road vehicles are going electric and low-noise in cities, rail keeps expanding from metros to high-speed, and containers — refrigerated, energy-storage or generator — all need fans that survive salt, dust and fluctuating temperatures. Every one of those duties maps to a LONGWELL platform released today.
Where LONGWELL's rail engagement starts is specific: rail transit, public transport, automotive electronics and elevator cooling — the four applications the LWFE3G160 and LWBE3G190 rail variants were developed for — and the RT series that carries them into traction converters and filter cubicles.
What's Inside · 6 Sections
- Application Architecture · 4 mobile segments — rail, trucks, marine, containers
- Product Platform · 5 impeller families and their on-board roles
- Rail Transit · RT series & six-manufacturer benchmarking
- Road · truck & transport refrigeration, ebm-papst cross-reference
- Marine & Containers · segment requirements & configuration
- Evidence · certification matrix, standards, six real programme threads, engagement paths
4 Mobile Segments, One Fan Platform
The same four segments the leading European suppliers organise their mobile business around — each with its own failure modes, and each mapped to released LONGWELL platforms.
Rail & Rail Transit
Traction and auxiliary converters, saloon and driver-cab HVAC, air-conditioning exhaust units, inverter cooling units, locomotive filter cubicles.
Trucks & Transport Refrigeration
Reefer and deep-freeze trailers, vans and mobile refrigeration units; cab HVAC; automotive electronics cooling; e-mobility auxiliary cooling.
Marine Applications
Cabin and saloon HVAC, engine and machine rooms, bilge ventilation, galley extraction — from cargo ships to passenger liners.
Containers
Refrigerated containers (reefer), energy-storage containers, generator enclosures and data-centre containers.
5 Impeller Families and Their On-Board Roles
One EC motor driving source, five wheel philosophies. Selecting on board starts from the air path — then the wheel follows.
Axial fans
Mainstay of air-conditioning systems — condensers, saloon and cab air supply, machine-room ventilation.
Backward centrifugal
Auxiliary systems and air conditioning — converter cabinets, inverter cooling, filter cubicles, higher-static positions.
Forward multi-wing centrifugal
Air-conditioning systems needing high static pressure in a small envelope — compact rail and public-transport HVAC.
Mixed-flow fans
Auxiliary-system duty between axial and centrifugal — pressure higher than an axial, straighter path than a scroll.
EC fans & blowers
The EC motor is the driving source across all five families — speed-controllable, brushless, demand-matched.
5 Products × 4 Segments · Mapping Matrix
| Platform | Rail & Rail Transit | Trucks & Reefer | Marine | Containers |
|---|---|---|---|---|
| EC Axial LWAE3G · LWBA(RT) | ✓ Condensers, machine rooms — LWBA(RT)400/355/320 in the benchmark matrix | ✓ Cab HVAC & reefer condensers — 12/24/48 V DC variants | ✓ Interior HVAC, single- or dual-duct | ✓ Reefer & ESS container cooling |
| Backward-Curved Centrifugal LWBE3G · LWBE(RT) | ✓ Traction converters, inverter cooling, filter cubicles — LWBE(RT)320/280 in the matrix | ✓ High-static condenser & electronics positions | ✓ Engine-room & machinery ventilation | ✓ Genset & ESS enclosures |
| Forward Multi-Wing Centrifugal LWFE3G160 · LWFE3G146 | ✓ Rail-transit HVAC — LWFE3G160-072NS / 092NS, LWFE3G146-092DS-09 double-inlet | ✓ Automotive-electronics cooling positions | ✓ Compact cabin air paths | ✓ Compact circulation duty |
| Mixed Flow | △ Auxiliary systems — evaluated per programme | △ Per programme | △ Per programme | △ Per programme |
| EC Blowers / Drivers | ✓ Common EC driving source across all families | ✓ 12 / 24 / 48 V DC platforms | ✓ Corrosion-protected builds | ✓ Standard-dimension builds |
✓ released platform family · △ evaluated per programme. The LWFE3G160 rail variants (LWFE3G160-072NS-01, LWFE3G160-072NS-02, LWFE3G160-092NS-03) cover rail traffic, public transport, automotive electronics and elevator cooling; the LWBE3G190 rail variants — LWBE3G190-072PS-02, LWBE3G190-072PS-12, LWBE3G190-072NS-23, LWBE3G190-072NS-28 — are designated for rail transit, and LWFE3G146-092DS-09 (forward double-inlet) completes the rail set.
RT Series · Benchmarking Six Foreign Manufacturers
Twelve released RT models, each mapped to the incumbent part it replaces or parallels. This is the table procurement asks for first: which competitor footprint does LONGWELL already match.
| LONGWELL Model | Benchmarking Foreign Fan Model | Manufacturer | Application Environment |
|---|---|---|---|
| LWBE(RT)320-PT-01 | K3G280-AK54-21 | EBM | Traction and auxiliary converters |
| LWBE(RT)320-PW-03 | GKHR315-CIW.080.5FA | Rosenberg | Air conditioning exhaust unit |
| LWBE(RT)320-PT-04 | GR31C-ZID.DC.1R(182208) | ZIEHL-ABEGG | Traction and auxiliary converters |
| LWBE(RT)320-PT-05 | K3G280BD14N2 | EBM | Traction and auxiliary converters |
| LWBE(RT)280-NW-01 | RH25C-61K. BA. CR | ZIEHL-ABEGG | Air conditioning exhaust unit |
| LWBA(RT)400-NW-01 | 3EST112-648 | Airscrew | Traction and auxiliary converters |
| LWBA(RT)355-PW-01 | 2CS7352-1RG81-OCK1 | SIEMENS | Traction and auxiliary converters |
| JLWBA(RT)355-PW-02 | 2CS7352-1RG11-3BH3 | SIEMENS | Traction and auxiliary converters |
| LWBA(RT)320-NW-08 | DKH_W315_F_098.6FA | Rosenberg | Air conditioning exhaust unit |
| LWBE(RT)280-NW-02 | RLA 51-2528-2D-S-177422 | NICOTRA/Gebhardt | Locomotive filter cubicle |
What rail duty demands from the fan
Vibration and shock, continuously
Roof-mounted and underfloor equipment sees random vibration and shock for the vehicle's whole life. Bearing choice, PCB potting and impeller surface finish are engineering decisions, not options.
−25 to +60 °C — and −40 °C starts
Rolling-stock HVAC specifications routinely call for −25 to +60 °C; cross-reference targets in this segment reach −40 °C start-up. Cold-start capability is verified, not assumed.
Tonal content, not just dB(A)
Passengers complain about the blade-pass tone, not the overall level. Wheel philosophy and speed control are chosen to keep tonal content down at full load — where the HVAC unit is loudest.
Rail standards — cited as requirements, stated honestly
The compliance framework ZIEHL-ABEGG publishes for railway technology is the market's requirement set, and we quote it as exactly that: what your programme will demand. The third column is LONGWELL's actual position on each item — including where we say no.
| Standard | What it demands |
|---|---|
| DIN EN 50155 Rolling stock · electronic equipment | Supply-voltage range, temperature class, EMC, shock and vibration requirements applied to the fan's electronics. |
| DIN EN 61373 Shock and vibration tests | Random-vibration and shock profiles by category and class (Cat 1 Class A/B for body-mounted equipment). |
| DIN EN 45545-2 Fire protection · materials | Fire behaviour of materials and components, hazard levels HL1–HL3 by vehicle category and location. |
| DIN EN 50121-3-2 EMC · rolling stock apparatus | Emission and immunity limits for apparatus on board rolling stock — tighter than industrial limits. |
| DIN EN 50124-1 Insulation coordination | Clearances and creepage distances for the supply and overvoltage class of the installation. |
| DIN EN 60721-3-5 Environmental conditions · ground vehicles | Classification of environmental parameters and severities for ground-vehicle installations. |
| DIN EN 60349-2 Converter-fed AC machines for rail | Rating and type-test rules for converter-fed AC motors on rail and road vehicles. |
| EN 15085 CL1 Welding of railway vehicles | Welding quality management and classification level for rail vehicle structures. |
Truck & Reefer Duty · Set Points That Cannot Drift
Transport refrigeration is judged by one metric: the cold chain never breaks. The fans must run for the whole journey, survive loading shocks and weather, and modulate precisely when doors open.
Weather, UV and road shock
Snow, rain, heat, cold, UV radiation — plus vibration and shock from driving, loading and unloading, on top of the fan's own movement. Materials and coatings are chosen for the road, not the lab.
Demand-based speed control
EC drives let the system hold the set point to the degree and compensate door-open transients by adjusting fan speed — supporting the relevant transport, storage and hygiene requirements.
Protection matched to the position
Composite or aluminium impellers, insulated and gas-tight builds, special heat, cold and dust protection — specified per position rather than per product family.
Typical transport set points the system must hold
| Cargo | Set point | Fan implication |
|---|---|---|
| Frozen fish | ≤ −18 °C constant | Continuous condenser duty; any downtime risks the whole load |
| Frozen meat / egg products | ≈ −14 °C | Steady-state evaporator & condenser airflow |
| Fresh meat, sausage, fresh fish | ≈ 0 °C, max 2–3 °C | Tight modulation; EC speed control earns its keep here |
| Dairy products | ≈ 4 °C | Low-load precision; partial-load efficiency matters |
| Flowers, fruit, vegetables | +4 to +8 °C | Multi-zone trailers run separate set points at once |
Recommended configuration · road platforms
| Position | Platform | Why this wheel |
|---|---|---|
| Reefer condenser | LWAE3G / LWAE DC axial, 12 / 24 / 48 V DC | Mobile-voltage platforms shared with the vehicle market; corrosion-protected builds for road weather |
| Cab HVAC & air distribution | LWCD 24 V DC cross-flow | Long uniform air curtain across the cab — Ø60–65 mm, up to 1,100 mm barrels; single/double/triple builds |
| Automotive electronics cooling | LWFE3G160 forward multi-wing | High static pressure in a compact envelope; rail-transit-grade build reused for automotive-electronics duty |
| Trailer evaporator circulation | LWBE3G190 / LWAE3G by duct static | Backward-curved where coils and ducts add resistance; forward multi-wing where the envelope is tight |
ebm-papst commercial-vehicle cross-reference
The twelve-volt-class incumbent landscape, from the ebm-papst BL-DC Fans for Commercial Vehicles catalogue (Edition 2019-10, product overview pp. 8–9). LONGWELL counterparts are released platform and size; selection is confirmed at the duty point.
| ebm-papst | Ø mm | Nominal V | Airflow m³/h | LONGWELL counterpart |
|---|---|---|---|---|
W3G250EC | 250 | 26 VDC | 1,240 / 1,815 | LWAE3G-250 ✅ |
W3G300ME | 300 | 26 VDC | 2,510 / 3,085 | LWAE3G-300 ✅ |
W3G300QX Heavy Duty | 300 | 26 VDC | 3,160–3,685 | LWAE3G-300 HD + IP66 ⚠ dust-test |
W1G300EC Basic | 300 | 13 / 26 VDC | 2,340 / 2,840 | LWAE3G-300 ✅ |
R3G280 RadiCal | 280 | 26 VDC | 2,740 / 3,345 | LWBE3G-280 (DC) ✅ |
R1G250 / R1G220 | 250 / 220 | 12 / 24 VDC | 1,095–1,375 / 990–1,125 | LWBE3G-250 / -220 ✅ |
R3G146 | 146 | 26 VDC | 815 | LWCD cross-flow / compact centrifugal ⚠ wheel-type differs |
K3G097 dual centrifugal | 97 | 26 VDC | 1,110–1,575 | — 🔴 no counterpart |
| AxiForce 120 / DiaForce | 120 | 12–48 VDC | — | — 🔴 no counterpart |
Salt, Movement and Sealed Boxes
Ships and containers share one truth: the fan runs continuously, the air is hostile, and service windows are far away. The design conversation is about corrosion class, continuous duty and standard dimensions that fit cramped spaces.
Marine — what the segment demands
Ventilation on board runs in continuous operation under constant movement, shock, vibration, humidity and salty air. Fans are needed in nearly every area: wheelhouse and accommodation HVAC, engine and machine rooms, bilge ventilation where exhaust gases and condensate collect, galleys, and reefer-container cooling on cargo ships. Systems inside watertight areas or fire zones must be designed as self-sufficient, and fans for potentially explosive atmospheres need the appropriate approval.
Ships sailing internationally are subject to the rules of classification societies — DNV, ABS, BV and peers under the IACS umbrella. LONGWELL supplies to these requirements as programme items: the corrosion-protection builds, water-resistant motor options and material selections are engineered per vessel and position, with classification testing scoped honestly at enquiry rather than implied.
- Axial + centrifugal coverage — single- or dual-duct HVAC, machinery ventilation, spark-free and water/gas-tight builds evaluated per programme.
- Corrosion strategy — impeller material (composite / aluminium / steel), coating system and motor build fixed per position; 96 h salt-spray programme per §6.
- Retrofit-friendly — compact frames and standard dimensions suit newbuild and refit alike.
Containers — the sealed-box duty
A container is a flexible space that must hold its climate regardless of ambient: refrigerated containers protecting perishable cargo, energy-storage containers, generator enclosures, data-centre containers. All of them need compact, standard-dimension fans that survive dust, salt and fluctuating temperatures.
LONGWELL's cold-chain programme already supplies this duty: the same EC axial platform lines that serve supermarket refrigeration serve reefer and ESS containers, which is why one supplier file can cover transport, warehouse and retail refrigeration together.
ZIEHL-ABEGG's container range spans reefer, ESS, generator and data-centre containers with AC or EC drives and biomimetic wheels. LONGWELL's counterpart mapping for container positions follows the same platform logic — EC axial for condenser and ventilation duty, backward-curved where static rises.
Recommended configuration · marine & containers
| Position | Platform | Duty note |
|---|---|---|
| Accommodation / cabin HVAC | LWAE3G EC axial | Condenser and supply air; corrosion-protected builds; continuous-duty bearings |
| Engine & machine rooms | LWAE3G large-frame axial | High-volume extraction and air renewal; robust mechanical builds |
| Bilge & humid spaces | LWAE3G with water-resistant motor build | Corrosion protection and water-resistant motors are the spec, not options |
| Reefer container cooling | LWAE3G / LWAE DC axial | Cold-chain continuity; same platform family as truck reefer duty |
| ESS / genset / DC containers | LWBE3G backward-curved + LWAE3G | High-static enclosure cooling; wide ambient; compact standard dimensions |
Certifications, Standards & Test Files
Three states only. ✅ Held — the certificate or report exists today and is issued as an original PDF. ⚠ Programme item — base evidence exists, the transport-specific qualification runs per programme. 🔴 Out of scope — we do not hold it and will not imply that we do.
Certification matrix held today
| Certification | Standard | Coverage |
|---|---|---|
| CE | EU marking · Machinery / EMC / LVD | LWAE3G all 13 sizes · LWBE3G all 12 sizes |
| EMC ★ | EN 55014-1 / EN 55014-2 Class B | Full EC platform |
| LVD | EU Low Voltage Directive 2014/35/EU | All sizes |
| UL | UL 1004-1 (motor) + UL 507 (fan) | Selected larger sizes, expanding |
| ETL | Intertek mark · US / Canada NRTL | Selected larger sizes |
| FCC ★ | FCC Part 15 Class B (US EMC) | Full EC platform |
| CCC | China Compulsory Certification | China-market models |
| RoHS / REACH | EU 2011/65/EU + (EC) 1907/2006 | All sizes |
| ErP Tier 2 ★ | EU Energy-related Products Tier 2 | Full EC platform |
| ISO 9001 / 14001 / 45001 + BSCI | Quality · Environment · Safety · Social compliance | ✓ Certified |
Test report library
T1 = original PDF issued within one business day, complimentary for project-intent customers. Report scopes are model-specific and stated on the report itself.
| Test type | Standard | Models | Status |
|---|---|---|---|
| Aerodynamic P-Q curves | AMCA 210-16 / ISO 5801 | Selected sizes, expanding | ✅ T1 ready |
| Acoustic Lw / Lp | ISO 3744 / ISO 13347 | LWAE3G all 13 sizes | ✅ T1 ready |
| Vibration | ISO 14694 / ISO 10816 | LWAE3G all 13 sizes | ✅ T1 ready |
| L10 bearing accelerated life | ISO 281 (60,000 h @ 40 °C) | Selected sizes | ✅ T1 ready |
| Electrical safety | UL 1004-1 / CSA C22.2 No.100 | NA-certified models | ✅ T1 ready |
| EMC full band | EN 55014-1/−2 + FCC Part 15 | Full EC platform | ✅ T1 ready |
| Ingress protection rating | IEC 60529 IP54 / IP55 / IP66 | Selected sizes | ✅ T1 ready |
| Cold-climate start (−25 °C) | LONGWELL internal test spec | Heat-pump and outdoor models | ✅ T1 ready |
| Salt spray corrosion 96 h | ISO 9227 / ASTM B117 | Outdoor and marine builds | ⚠ Scheduled |
| EN 61373 Cat 1 Class B vibration | IEC 61373 | Per programme | ⚠ Per programme |
| EN 45545-2 HL classification | EN 45545-2 | Per part number | ⚠ Per programme |
Six Real Programme Threads Behind This Pack
Every item below is a real project thread from LONGWELL's own correspondence — an anonymised case reference, the counterparty described by industry and buying role only, the actual dates from first contact to close, the length of the email thread and, where an invoice is on file, the order value band as invoiced. Customer names, domains, unit prices and commercial terms are withheld. Evidence grade A means controlled documents or test reports are on file for that thread; grade B means a structured enquiry and specification are on file.
01 · Roof-mounted rail HVAC main fan, 3-phase 400 V EC
- LWBE3G310-138NT-05 with integrated inlet ring — fan 319 × 319 × 238 mm, inlet ring 348 × 348 × 60.5 mm, 980 W, 3 ph 400 VAC 50/60 Hz, 1.64 A, 2,600 rpm, Class F, IP54, −25 to +60 °C. Product page
- Engineering proposed replacing the specified LWBE3G225-092NS-02 with LWBE3G225-072NS-07 — better head and system efficiency inside the same mounting envelope. Product page
- Nameplate traceability on file — model, rating, IP class, insulation class and build date 2023.03, with the wiring definition alongside: L1/L2/L3 phases, Y/G PE, and the Vcc / Vsp / GND / FC control leads with rotation direction.
02 · 1,009 Pa from a 190 mm frame — high-static EC centrifugal plus 48 V DC axial
- LWBE3G190-072NS-06: 190 × 190 × 101.8 mm, 1 ph 220 V 50 Hz / 230 V, 170 W, 1.3 A, 973 m³/h at 1,009 Pa, 4,100 rpm, 72 dBA, PA6+GF impeller, IP55, −25 to +60 °C. Product page
- Paired with LWAD250S-7PB-02 — 48 V DC axial, aluminium impeller, IP44 — for the lower-pressure positions, plus LWBE3G225-092NS-11. Product page
- Every aerodynamic figure was issued as tested per AMCA 210/211 methods, so the customer could run their own duct-resistance calculation instead of accepting a catalogue number.
03 · ebm-papst cross-reference on a 110 V DC vehicle bus
- Target R3G310-AN13-11: 110 V DC (87–143 V), 2,500 rpm, 345 W, 3.2 A, 2,785 m³/h at 0 Pa, IP42, ambient −40 to +50 °C, 5 kg, 310 mm frame.
- Plus an AC forward-curved scroll fan that had to keep identical mounting holes and dimensions.
- A 1:1 parameter comparison was issued against the LWBE3G range with matched flange dimensions and performance curves; initial quantity five units per model.
04 · Wide-input DC and RS-485 cross-reference programme
- Targets included D1G133-DC55-16 (110 V DC, 60–143 V, 120 W, 1,100 m³/h at 560 Pa, IP44), R3G190-RY87-P2 (80 V DC, 245 W, 4,800 rpm, IP54), R3G250-RR09-P1 (110 V DC, 540 W, 500 m³/h at 1,500 Pa, 3,800 rpm) and R3G280-RR10-P1.
- Requirements included static pressure up to 2,000 Pa, Modbus RS-485 with a floating status relay, and IP44 / IP54 / IP55 by position.
- Evaluation covered both tooling match and control-board development against the LWBE3G and LWAE3G platforms. On this kind of programme the EC driver board is what has to survive the wide DC bus, the cold start and years of vibration — which is why potting and isolation are specified on the board, not on the fan.
05 · Surface finish change after a transit review
- Following a transit-damage review, the impeller surface treatment was changed — the fix was made on the part, not argued in the claim.
- A mill-finish backward-curved wheel was then supplied for the customer's approval ahead of series build. Part photograph and approval record are on file in the published case profile.
06 · 24 V DC cross-flow for bus, refrigerated vehicle and air-curtain positions
- LWCD-65820M-20 — Ø65 mm, 24 V, 1.80 A, 1,800 rpm, 65 Pa, 920 m³/h, 53 dB(A).
- LWCD-651100M-30 — 24 V, 4.20 A, 1,600 rpm, 55 Pa, 1,225 m³/h, 56 dB(A).
- LWCD-60870M-20 — 24 V, 1.0 A, 1,800 rpm, 52 Pa, 550 m³/h, 49 dB(A).
- Single, double and triple refer to the number of impeller sections coupled inside one housing — clarified in writing, because the internal and external model coding for these variants is a recurring source of confusion.
- A 284-day, 83-email thread is the honest cost of bringing a distribution account onto a DC platform. The same part then covers bus, refrigerated-vehicle and cab air distribution, which is why the segment table lists it once.
Source: all six threads — with the roof-unit nameplate photograph, the mill-finish impeller photograph and the 24 s EC-driver-board clip — are published in the Rail and Vehicle HVAC case profile on longwellfans.com. Model definitions, current availability and datasheets: select.longwellfans.com.
Transportation Programme Engineering Capabilities
From duty point to series supply — the pathway we run with mobile-equipment programmes, and the commercial terms behind it.
Programme pathway
Concept
Day 1–7Duty-point review, LWAE3G / LWBE3G / RT shortlist, environmental-class and standard-scope check, outside-range call if applicable.
Design
Day 8–21Curve, dimensional drawing, inlet-ring geometry, electrical data, connector and loom definition, control options (0–10 V / PWM / RS-485), enclosure interface.
Sample
Day 22–45Sample units (stock models 1–3 days), bench-test support in your rig, vibration-profile and cold-start support, five-unit maintenance-replacement batches.
Production
15–30 days from orderProduction release, AQL 2.5 inspection, document pack per part number and per destination, PPAP-format documentation on request.
Durations are typical and confirmed per programme. Stock-model sampling in 1–3 days applies to released catalogue sizes only.
Warranty, lead times & ordering
| Term | Standard |
|---|---|
| Mass production — standard model | 15–30 days · 100–500 units MOQ (varies by size) |
| Maintenance-replacement entry | Five units per model — the normal first order in this segment; production MOQ applies only at series release |
| Sampling | Stock catalogue sizes 1–3 days · custom builds 22–45 days |
| Standard warranty | 12 months from customer factory receipt date |
| Extended warranty | 18–24 months, negotiated per project agreement; available to strategic programmes |
| Designed service life | 10-year service-life framework; L10 = 60,000 h @ 40 °C continuous |
| Documentation per shipment | Test report set, dimensional drawing, curve and catalogue sheet held per part number and per destination; nameplate carries model, rating, IP class, insulation class and build date |
Four Engagement Paths
Pick the one that matches where your programme is today. Each path has a first step you can complete this week.
Rail OEM Programme
Truck, Reefer & Mobile Equipment
Marine & Container Programme
Maintenance Replacement & Cross-Reference
Transportation Sales Contacts
From traction converters to reefer containers. Engineered by LONGWELL.
Send the duty point, the ambient class and the incumbent part number. We answer with a model, a curve, a drawing and the documents that belong to that part number — within one business day.