Heavy Duty Connector Manufacturer — HDC for Industrial Power, Signal & Hybrid Cabling
Verchil is a specialized heavy duty connector (HDC) manufacturer producing rectangular industrial connectors compatible with Harting, ILME, and Weidmüller standards.
Engineered for the harshest industrial environments, every Verchil HDC features a zinc die-cast aluminum housing with powder-coated RAL 7037 grey finish, stainless steel locking levers, NBR sealing gaskets rated −40°C to +125°C, UL 94 V0 flame retardancy, and IP65 protection per DIN EN 60529 when fully mated.
Trusted by industrial automation OEMs, robotics integrators, rail and transit manufacturers, wind power equipment builders, and CNC machinery brands across 70+ countries, Verchil delivers Harting-cross-reference compatibility, complete hood and base options (top entry / side entry / straight / angled), and full OEM/ODM customization on insert configurations and branded markings.
Explore Our Heavy Duty Connector Series
HDC-HA Series
Compact entry-level HDC for low-density power and signal applications. Frame sizes H3A, H10A, H16A, H32A. Insert pin count 3–32. Ideal for small machinery, control panels, and space-constrained installations.
HDC-HQ Series
Reduced-height HDC designed for low-clearance cabinet installations. Same Harting cross-reference footprint as HA but with optimized hood depth. Common in compact automation cells and mobile equipment.
HDC-HE Series
The most widely deployed HDC series — frame sizes H6B, H10B, H16B, H24B, H32B, H48B. Insert pin count 6–48, current 16A per pin. Industry default for general industrial machinery, conveyors, and packaging equipment.
HDC-HEE Series
Increased pin count within the same H-size frame as HE — roughly 2× the contacts per frame. Used where signal-heavy machinery or robotics need many low-current paths through one connector body.
HDC-HD Series
Higher pin density with stronger contact rating than HEE — ideal for hybrid power + signal applications in industrial robots and CNC machining centers.
HDC-HDD Series
The highest pin count per frame in the Verchil range — up to 128 pins in an H48 frame. Specified for complex robotics, automated test equipment, and instrumentation cabinets where every channel matters.
HDC-HSB Series
Large contact inserts rated 35A per pin (vs 16A standard). Used for motor connections, heating circuits, and power distribution where a single connector must carry significant current.
HDC-HK Series
Modular frame system that accepts mixed inserts — power, signal, Ethernet (CAT5/CAT6), pneumatic, and fiber — within a single connector body. The flagship solution for modern Industry 4.0 cabling.
Heavy Duty Connector Hood and Base HA Series
HDC-H3A-BK-1L
HDC-H3A-BK-1L-SE
HDC-H3A-SE-2B
HDC-H3A-SF-1L
HDC-H3A-TE-2B
HDC-H10A-BK-1L
HDC-H10A-SE-2B
HDC-H10A-SEH-2B
HDC-H10A-SF-1L-CV
HDC-H10A-TE-2B
HDC-H10A-THE-2B
HDC-H16A-BK-1L-CV
HDC-H16A-SE-2B
HDC-H16A-SEH-2B
HDC-H16A-SF-1L-CV
HDC-H16A-TE-2B
HDC-H16A-TEH-2B
HDC-H32A-BK-2L
HDC-H32A-SEH-4B
HDC-H32A-SF-2L
HDC-H32A-TEH-4B
Heavy Duty Connector Hood and Base HB Series
HDC-H6B-BK-1L
HDC-H6B-CCT-1L
HDC-H6B-CCTH-1L
HDC-H6B-SE-2B
HDC-H6B-SEH-2B
HDC-H6B-SF-1L-CV
HDC-H6B-SFH-1L-CV
HDC-H6B-TE-2B
HDC-H6B-TEH-2B
HDC-H10B-BK-2L
HDC-H10B-CCT-2L
HDC-H10B-CCTH-2L
HDC-H10B-SE-4B
HDC-H10B-SEH-4B
HDC-H10B-SF-2L
HDC-H10B-SFH-2L
HDC-H10B-TE-4B
HDC-H10B-TEH-4B
HDC-H16B-BK-2L
HDC-H16B-CCT-2L
HDC-H16B-CCTH-2L
HDC-H16B-SE-4B
HDC-H16B-SEH-4B
HDC-H16B-SF-2L
HDC-H16B-SFH-2L
HDC-H16B-TE-4B
HDC-H16B-TEH-4B
HDC-H24B-BK-2L
HDC-H24B-CCT-2L
HDC-H24B-CCT-2L
HDC-H24B-SE-4B
HDC-H24B-SEH-4B
HDC-H24B-SF-2L
HDC-H24B-SFH-2L
HDC-H24B-TE-4B
HDC-H24B-TEH-4B
HDC-H32B-BK-2L
HDC-H32B-CCT-2L
HDC-H32B-SE-4B
HDC-H32B-SF-2L
HDC-H32B-TE-4B
HDC-H48B-BK-1L
HDC-H48B-SE-2B
HDC-H48B-SF-1L
HDC-H48B-SF-1L-CV
HDC-H48B-TE-2B
The housing of this heavy-duty connector is designed for powerful industrial applications and is characterized by powder coating surface treatment based on zinc die-casting materials to enhance corrosion resistance and durability.
It is available in standard grey colours(RAL 7037) in line with ordinary industrial aesthetics.
The locking mechanism adopts a lever-type design, and the metal elastic compression element is made of stainless steel, which ensures a safe and reliable matching cycle under harsh conditions.
The sealing of the cover and shell is provided by NBR gasket, which has excellent oil resistance, fuel resistance and environmental pollutant resistance.
The connector operates in a wide temperature range of -40°C to + 125°C and is suitable for extreme thermal environments.
According to the UL 94 standard, its flammability grade reaches V0, indicating that it has self-extinguishing and improves fire safety.
In addition, when coupled, it provides IP65 protection in line with DIN EN 60 529 to prevent dust entry and low-pressure water jets in any direction.
What Is a Heavy Duty Connector (HDC)?
A heavy duty connector (HDC) — also known as a rectangular industrial connector or by the genericized brand name “Harting connector” — is a modular electrical and signal connector designed for harsh industrial environments where ordinary connectors fail. Unlike circular aviation connectors or panel-mount adapters, an HDC uses a rectangular metal housing with a hinged locking lever that compresses sealing gaskets and contact inserts under controlled mechanical force, delivering gas-tight, vibration-proof, IP65–IP68 protected connections.
The architecture is built from four standardized components that snap and screw together:
- The hood (or cover) — the outer rectangular shell covering the cable-side connector, available in straight, top-entry, side-entry, and angled configurations to manage cable routing.
- The base (or housing) — the bulkhead-mount counterpart that bolts to the equipment panel.
- The insert — the inner electrical block carrying the contact pins or sockets; chosen by pin count, current rating, and termination type (screw, crimp, spring cage).
- The contacts — the individual electrical terminals, typically silver- or gold-plated, rated from 10A signal-level up to 200A power-class.
Because hood, base, insert, and contacts are independently selectable, a heavy duty connector is best understood as a system — not a single product. The same H10B frame can be configured with 10 signal pins, 6 power + 4 signal pins, or even mixed modular inserts including Ethernet and pneumatic lines.
For a deeper introduction, see our Heavy Duty Connector Guide — 7 Critical Tips for Industrial Reliability.
Anatomy of a Heavy Duty Connector
Understanding the four-component HDC system makes specification dramatically easier.
1 · The Hood (Cable-Side Cover)
The hood houses the insert and protects the cable termination. Verchil offers six standard hood geometries:
- BK — straight hood, single cable entry
- SE / SF — side entry, single or double cable
- TE / THE — top entry, single or double cable
- CCT — closed/dust cover for unused mating sides
- SFH / SEH / TEH — high-profile versions of SF/SE/TE with extra cable space
Each hood is available with 1-lever (1L) or 2-lever (2L) locking depending on frame size.
2 · The Base (Panel-Side Housing)
The base mounts to the equipment panel and accepts the matching insert. Verchil supplies:
- Bulkhead bases for standard panel cutouts
- Surface-mount bases for cabinets without through-cutout
- Inline coupler bases for cable-to-cable joins without a panel
3 · The Insert (Electrical Block)
This is where buyers do most of their thinking. Insert selection determines:
- Pin count — 3, 6, 10, 16, 24, 32, 48, 64, 108, 128
- Current per pin — 10A signal / 16A standard / 35A HSB / 80A and 200A power
- Termination type — screw, crimp, spring cage (Push-In)
- Insert layout — all signal, all power, or hybrid (e.g. 4 power + 8 signal)
4 · The Contacts
Individual silver- or gold-plated terminals fitted into the insert. Verchil supplies pre-loaded inserts (most common) and individual contacts for crimp-style field termination.
5 · The Sealing System
NBR (nitrile rubber) gaskets between hood and base provide IP65 protection. NBR is rated −40°C to +125°C and resists oil, fuel, and most industrial chemicals. For higher temperatures or specialty chemical environments, silicone and Viton gaskets are available on request.
For a focused deep-dive on insert wiring options, see our Heavy Duty Wire Connectors guide.
HDC Frame Sizes & Pin Count Reference
Find your required frame size and insert combination — every variant below is in active Verchil production.
| Frame Size | Available Pin Counts | Locking Mechanism | Typical Current | Common Use |
|---|---|---|---|---|
| H3A | 4 + PE | 1 Lever | 10A signal | Sensors, small actuators |
| H6B | 6 + PE / 12 + PE (HEE) | 1 Lever | 16A standard | Small machinery, control |
| H10A | 10 + PE | 1 Lever | 16A standard | Compact panels |
| H10B | 10 + PE / 20 + PE (HEE) | 2 Lever | 16A standard | General industrial |
| H16A | 16 + PE | 1 Lever | 16A standard | Robotics signal |
| H16B | 16 + PE / 32 + PE (HEE) | 2 Lever | 16A standard | Mid-density industrial |
| H24B | 24 + PE / 48 + PE (HEE) | 2 Lever | 16A standard | High-density signal |
| H32A / H32B | 32 + PE / 64 + PE (HEE) | 2 Lever | 16A standard | Robotics, CNC |
| H48B | 48 + PE / 108 + PE (HDD) | 1–2 Lever | 16A standard | Complex automation |
Hood / Base Combinations available for every frame size:
BK · SE · SEH · SF · SFH · TE · TEH · THE · CCT · CCTH
Mating frame size + insert + hood type + termination style gives the full SKU. For example: HDC-H10B-SE-2B + HDC-H10B-INSERT-10P-16A-CRIMP describes an H10B side-entry hood with crimp-terminated 10-pin 16A insert.
For complete SKU mapping by frame size, please contact our sales team — we’ll match your application to the exact insert configuration.
Heavy Duty Connector vs Other Industrial Connectors
HDC is not the only industrial connector option — choosing between rectangular HDC, circular aviation, and modular bus connectors depends on pin count, modular needs, and serviceability.
| Connector Type | Pin Count | Modularity | Mating Cycles | When to Choose |
|---|---|---|---|---|
| Heavy Duty (HDC) | 3–128 | High (modular inserts) | 5,000+ | High pin count, modular signal+power+data, easy field service |
| Circular Aviation (M12/SP/Y) | 2–26 | Low (fixed insert) | 1,000–5,000 | Lower pin count, faster mating, tighter sealing |
| PowerCon | 3 (AC line) | None | 5,000+ | AC power only, stage and portable |
| Cable Gland | N/A (cable pass) | N/A | Permanent | Permanent enclosure entry, no field service |
Choose HDC when:
- You need more than 10 pins in one connector
- Your application requires mixed signal + power through one body
- You want modular insert architecture for future configuration changes
- Field service technicians need to disconnect and replace modules in minutes
- You need direct Harting / ILME cross-reference for legacy system upgrades
Choose Circular Aviation Connectors when pin count is below 10 and a smaller, lighter, threaded-coupling solution is preferred. See our Waterproof Aviation Connector category.
How to Specify the Right Heavy Duty Connector
A complete HDC specification requires six decisions in sequence. Walk through each step before requesting a quote.
Step 1 · Count Your Circuits
List every wire that must pass through the connector — signal, power, communication, ground (PE). Always add 2–4 spare pins for future expansion or redundancy. This gives you the required pin count, which determines the frame size.
Step 2 · Determine Current per Pin
The highest-current circuit drives your contact selection:
- ≤10A → standard signal insert
- ≤16A → standard power insert (HE/HB)
- ≤35A → HSB high-current insert
- ≤80A or 200A → dedicated high-current single-pin power module
Step 3 · Choose Insert Type by Termination Style
- Screw terminal — easiest for field assembly, no special tools, suitable for low to medium production volume
- Crimp terminal — fast OEM assembly, requires crimp tool, used for high-volume production lines
- Spring cage (Push-In) — fastest field termination, vibration-resistant, popular for modern automation
Step 4 · Choose Frame Size and Hood Configuration
Match the insert to the smallest frame that fits, then pick the hood geometry based on cable entry direction relative to the panel. Side entry (SE/SF) is most common; top entry (TE) when cable comes from above; straight (BK) when cable enters in-line with the mating axis.
Step 5 · Specify Sealing and Environmental Rating
Standard NBR gasket gives IP65, −40°C to +125°C. For:
- Outdoor permanent install → add cable gland with matching IP65/IP67 rating
- Wash-down or chemical exposure → specify Viton or silicone gaskets
- Marine → stainless steel locking levers + brass gland
For a project-specific deep dive, see our Heavy Duty Power Connectors — 7 Expert Buying Tips.
Step 6 · OEM Customization Options
Verchil supports custom housing colors (RAL 7037 grey is standard; black, blue, red available with MOQ 1,000), branded laser engraving on the hood, custom insert configurations (mixed pin layouts on request), and pre-wired assemblies. Tooling lead time for custom configurations is 25–35 days.
Where Heavy Duty Connectors Are Used
Industrial Robotics — Robotic arms generate constant high-speed motion, vibration, and acceleration that would destroy ordinary friction-fit connectors. HDC with double-lever locking and gas-tight crimp contacts maintain reliable connections through millions of motion cycles. Modular HK inserts allow combined power + signal + Ethernet through a single connector at the robot base.
Rail and Mass Transit — HDCs are used in inter-car couplings, under-carriage equipment, and signaling systems where they must survive temperature swings from −40°C to +85°C, salt spray on coastal routes, and constant mechanical shock. EN 45545 fire-rated variants are available for European rolling stock projects.
Wind Power Generation — Inside wind turbine nacelles at 80+ meter heights, HDCs connect control electronics, pitch systems, and generator power lines. Service technicians depend on plug-and-play replacement to minimize downtime — a major economic factor when each hour of outage costs thousands.
CNC Machining & Tooling — Coolant spray, metal swarf, and hydraulic fluid would eat through plastic-housed connectors within months. The zinc die-cast aluminum hood, NBR sealing, and IP65 rating of Verchil HDC survive years in this environment. See our Industrial Rectangular Connectors guide for full CNC selection criteria.
Automated Test Equipment (ATE) — High-pin-count HDD inserts (up to 128 contacts) carry hundreds of test signals between cabinet sections and DUT fixtures. Field-replaceable insert architecture lets technicians swap fixture configurations in minutes.
Mobile & Construction Machinery — Excavators, mining trucks, and harvesters use HSB high-current HDC for motor power distribution and HK modular for combined hydraulics control + sensor signals. Vibration resistance is the critical specification. For outdoor protection, see our Heavy Duty Waterproof Connectors guide.
Packaging & Food Processing — Modular HE-series HDC are the backbone of conveyor controls, filler machines, and labelers. For wash-down areas, IP69K-rated variants with stainless steel housings keep production lines compliant with food-safety regulations.
Why Source Heavy Duty Connectors from Verchil
Direct Harting / ILME / Weidmüller cross-reference compatibility — Every Verchil HDC dimension, mounting hole pattern, and insert pinout matches the corresponding Harting Han series, ILME Squich, and Weidmüller HDC standards. Your existing inventory of cables and panels works directly with Verchil replacements at typically 40–50% lower cost.
18+ years of connector manufacturing — Vertically integrated 3,000 m² factory in Wenzhou, with in-house die-casting, machining, insert molding, electroplating, and assembly.
Full lifecycle testing — Every batch undergoes vibration testing (IEC 60068-2-6), IP65 ingress testing per DIN EN 60529, contact resistance measurement, mating force calibration, and pull-out force testing. Test reports are provided with every shipment.
Custom insert layouts welcome — Beyond standard insert configurations, we manufacture custom layouts (mixed power + signal + Ethernet in non-standard ratios) with MOQ from 500 pieces. Tooling lead time 25–35 days.
Stock + Made-to-Order — Common HA, HB, HE series ship from stock in 7 days. Custom configurations and HK modular assemblies ship in 25–35 days.
Compliance — All standard products comply with CE, RoHS, UL 94 V0 flammability rating, and DIN EN 60529 IP rating standards. Marine, rail (EN 45545), and explosion-proof certifications available on request.
Frequently Asked Questions
What is the housing material and how does it resist impact?
The hood and base are high-strength die-cast aluminum alloy with powder-coated finish (standard RAL 7037 grey, other colors on request with MOQ). The aluminum housing absorbs mechanical shock without cracking and resists corrosion in industrial environments. Locking levers are stainless steel for cyclic strength.
What IP rating does the connector achieve?
When the hood and base are fully mated and the locking lever is engaged, the NBR gasket compression delivers IP65 protection per DIN EN 60529 — dust-tight and protected against water jets from any direction. For higher IP ratings or wash-down environments, specify alternative gasket materials and stainless steel hoods.
What insert wiring/termination options are available?
Verchil supplies three termination styles across all inserts:
- Screw terminal — universal for field assembly, no special tools required
- Crimp terminal — fast OEM line assembly, requires manufacturer crimp tool
- Spring cage (Push-In) — fastest insertion, vibration-resistant, ideal for modern automation
Mixed termination styles within one connector are available for modular HK series.
Do you offer high-current modules (above 16A)?
Yes. The HSB series rates 35A per pin. For higher currents, we offer dedicated power modules at 80A and 200A that fit standard HK modular frames. Mixed module configurations (e.g., 2× 80A power + 12× 16A signal in an H16B frame) are available for OEM projects.
What is the difference between HE, HEE, HD, and HDD series?
All four use the same H-frame footprint (H6B, H10B, H16B, etc.) but differ in pin density:
- HE — standard density, 16A per pin (e.g., H10B-HE = 10 pins)
- HEE — roughly 2× pin count, lower current per pin (e.g., H10B-HEE = 20 pins)
- HD — higher density with hybrid power+signal layout
- HDD — ultra-high density, up to 4× standard (H48-HDD = 108–128 pins)
Choose by total pin count required, then verify current rating per pin.
Can I mix power and signal contacts in one HDC?
Yes — this is exactly what the HK modular series is designed for. The HK frame accepts removable insert modules: standard 16A signal modules, 35A power modules, 80A/200A high-current modules, Ethernet CAT5/CAT6 modules, pneumatic modules, and fiber modules. Mix and match within one frame.
What is the typical lead time?
Standard HA, HB, and HE series ship from stock or 7-day production. Custom insert configurations and HK modular assemblies take 25–35 days. We don't quote 8–12 week lead times.
Do you provide samples?
Yes — Verchil provides 1–3 sample pieces of standard HDC series for qualified B2B buyers, with shipping at your cost. For customized inserts or special hoods requiring tooling, sample fees apply and are credited against the first production order.
What documentation is provided with shipments?
Standard shipments include batch test reports (contact resistance, mating force), IP65 air-tightness test certificate, RoHS and CE compliance declarations, and a detailed packing list. For rail, marine, or specialty certifications, additional third-party test reports are provided on request.
Heavy Duty Connector Resources & Technical Guides
Waterproof and Outdoor HDC
