01
Regional Sales Manager
Your first conversation — application, requirements and feasibility
“I have an idea of what I need, but not which part number.”
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Interconnective Solutions
What are you
connecting?
Describe your application, your requirement or your challenge. We'll help you find the right component, the right knowledge or the right specialist — even if you don't have a part number yet.
Not sure where to start?
Our product specialists help you personally. You speak directly to a Regional Sales Manager — no ticket, no call centre.
Talk to a product specialist+31 (0)73-6458458Applications
Engineered for demanding applications.
From industrial machinery and mobility to medical technology, advanced electronics and defence — Belko connects demanding applications with the right cables, connectors and custom assemblies.
Explore all applicationsThree ways to start
Where do you start?
Not everyone arrives with the same question. One has a part number, the next has a problem, and the third is mostly in a hurry. All three roads end in the same place: a connection that works.
- Search the full range by part number, type or property — connectors, cable and wire, backshells, grommets, enclosures and tools.01ProductI'm looking for a product“I know what I need.”Search by part numberFilter by propertyRequest a quote directlyGo to the catalogue
- Start from the environment and the requirements: temperature, vibration, sealing, EMC, service life. We translate that into a component choice that fits.02ApplicationI have an application“I know what it has to do, not what it has to be.”Selection by environmentMaterial and component adviceCompare alternativesDescribe your application
- At Belko you speak directly to a Regional Sales Manager — no call centre, no ticket. For more complex projects a project coordinator joins the conversation.03ExpertI need expert advice“I'd rather talk it through with someone.”Straight to a specialistInput from the design stageA named contactTalk to a specialist
The catalogue
Find the right connection
11,453 products
Search by what you already know. Or tell us what the connection has to do, and we narrow it down with you.
Explore the range
The two brands above carry most of the range. These are the families Belko builds around.
- 01Connectors & backshellsCircular, rectangular and RF connectors, with the backshells and housings that finish them.4,453productsExplore
- 02Cable & wireSingle wire, multi-conductor, ribbon and coax — by the metre or on the drum.4,493productsExplore
- 03Cable assembliesAssembled, tested connections. Or start from your own requirements and build one.1,263productsBuild your cable assembly
- 04AccessoriesSeals, grommets, glands and the supporting parts around cable and connector.136productsExplore
- 05EnclosuresModICE modular enclosures for electronics that have to go into the field.On requestAsk a specialist
- 06ToolsCrimping and assembly tooling, including versions to military specification.176productsExplore
Can't find it?
Not every connection starts with a part number.
Tell us what you are trying to connect. A Belko specialist helps you find it — and sources it worldwide if it isn't in the catalogue.
Anatomy
A connection is not a part number
It is a stack of decisions: conductor, insulation, shielding, jacket, sealing, connector. Every layer answers a question, every wrong layer comes back later as interference, wear or downtime — and in the end all of it has to become one connection you can actually plug in.
- 01JacketWhat does the outside have to survive?
- 02ShieldingFoil, braid or both?Shielded vs unshielded connectors
- 03ConductorDoes the signal make it across?
- 04SealingDoes what belongs outside stay outside?Not a layer of the cable — it is decided at the termination.Understanding IP ratings for connectors
- 05ConnectorHow does the cable become the connection?How to select an industrial connector
fig. 01 · Illustrative cable assembly anatomy
From the outside in, then into the connector
- 01JacketPUR · PE · LSZH
- 02BraidShielding
- 03FoilShielding
- 04InsulationAround every core
- 05ConductorStranded copper
- 06Strain reliefBend and pull protection
- 07TerminationWhere sealing is decided
- 08Contacts7-pin interface
Ready to define your assembly?
Start with what you know
You will not have every answer up front, and you do not need one. Begin with the part you are sure of — a Belko specialist works through the rest with you and stays responsible for whether it fits your application.
How Belko helps
We pick it up wherever you are
An interconnect question rarely arrives finished. One visitor is still choosing a component, the next already has a drawing, and the third has a supply problem that started two years ago. Belko works at four stages of the same connection — and you can come in at any of them.
- 01
Find
Product selection and application support
“Which component fits this environment?”
Start from the part number if you have one, and from the environment if you don't: temperature, vibration, sealing, EMC, service life. Belko sources components worldwide — if it isn't in the catalogue, we go and find it.
- Search by part number, type or property
- Selection by environment and application
- Compare alternatives
- Sourcing components worldwide
Go to the catalogueSource · Products · Supply chain management
- 02
Design
Design support
“What if nothing that fits exists yet?”
Our engineers think along in the design phase, identify bottlenecks and propose improvements — so you develop more efficiently, reduce cost and limit risk.
- Material selection and specification
- Choice of cable and connector
- Mechanical and electrical requirements
- Prototype before series production
About design supportSource · Design support · Custom cable design
- 03Start here
Build
Cable assemblies
“How is it made reproducible?”
Single wire, multi-conductor cable, ribbon and coax — crimped, soldered, braided, overmoulded and tested on Schleuniger, Komax and GWL equipment.
- Automated cutting and stripping
- Crimping — by hand and by press
- Soldering, braiding, twisting and overmoulding
- Electronic programmable and continuity testing
Start with what you know. Build a project brief and let a Belko specialist complete the technical configuration.
Start your cable assemblySeven short steps. No part number needed, no account, nothing to install.
Source · Cable assemblies
- 04
Manage
Supply chain and vendor management
“And will it still be available next year?”
We handle everything from the moment of your enquiry: purchasing, material procurement, sourcing and logistics — and, if you want, the administrative and financial tasks.
- Just-in-time stock control
- Vendor Managed Inventory
- Call-off orders from heated warehouses
- A balance sheet free of dead stock and fewer transport movements
About supply chain managementSource · Supply chain management · Vendor management
Whichever stage you come in at, you get a named contact rather than a ticket — and the stage after it is already covered.
Where it has to work
Built for environments where the connection matters
An environment is not a label on a brochure. It is a list of things a connection has to survive — and the list is different in every one of them. Pick the one you work in.
What this environment asks
- Vibration
- Temperature
- Reproducibility
01 — Automotive & transport
“This connection has to vibrate, run hot and still be identical ten thousand times over.”
Connections that have to be identical thousands of times over and keep doing the same thing for years.
fig. 01
Where the connection sits
- Charging infrastructure
- Vehicle wiring
- Sensor connections
- Test rigs
Belko Knowledge
Knowledge from practice
Organised by the question you are asking, not by the date we answered it. 12 topics from the work of our engineers.
- Technical Guides
How to select an industrial connector
A structured way to choose an industrial connector: define the electrical load, the mechanical and environmental conditions at the connector, the termination and the mating regime, then let each requirement rule out connector families. Ratings are only meaningful together with the conditions under which the datasheet states them.
- Standards & Compliance
Understanding IP ratings for connectors
The IP code of IEC 60529 states how well an enclosure keeps out solid objects and water under defined test conditions. For connectors, the code is only meaningful together with the state in which it was tested — mated, unmated or capped — and it says nothing about temperature, chemicals or seal ageing. ISO 20653 adds K-suffixed codes such as IPX9K for road vehicles.
- Engineering Insights
Shielded vs unshielded connectors
A shield only improves electromagnetic compatibility when it is continuous from cable to housing to panel, with low impedance at the frequencies that matter. This article explains how foil and braid shields work, what transfer impedance measures, why 360° termination outperforms pigtails, how to approach shield grounding, and when an unshielded connection is the better engineering choice.
- Technical Guides
Connector selection for high-vibration environments
Vibration rarely breaks a connector outright; it degrades the contact interface through micromotion, fretting and intermittent interruptions. This guide explains the failure mechanisms, the connector and cable features that resist them, and how sinusoidal, random and shock tests are used to qualify a connection.
- Engineering Insights
Contact resistance and connection reliability
Contact resistance is set by a few microscopic contact spots and the films that cover them, not by the apparent contact area. This article explains constriction and film resistance, the roles of normal force, wipe and plating, how contact resistance is measured, and how it links to temperature rise and current derating.
- Standards & Compliance
RoHS and REACH explained
RoHS restricts ten substances in electrical and electronic equipment; REACH regulates chemicals in the EU and, for articles such as connectors and cables, creates a duty to communicate Candidate List substances above 0.1 % by weight. This article explains scope, thresholds, exemptions, the SCIP database and what a supplier declaration does and does not tell you.
Knowledge is not marketing at Belko, it is the work itself: the same engineers who write these pieces also answer your question.
All Belko KnowledgeThe people
Behind every connection is someone who knows it
No ticket system and no call centre. Your question reaches the role that knows something about it.
02
Design support engineer
Material and component choice, mechanical and electrical requirements
“Will this jacket hold up at 125 °C with daily flexing?”
EN · NL
03
Project coordinator
More complex projects, from prototype to series production
“We're going from 20 pieces to 8,000 a year. What changes?”
EN · NL
04
Key account manager
Stock agreements, VMI, call-off orders and security of supply
“I never want to see these eight items on backorder again.”
EN · NL · DE
Contact
Tell us what you're looking for
You don't have to have it worked out. A description of the application is enough to start.
- Your question reaches a technical specialist, not a form inbox.
- You don't need a part number — a description of the application will do.
- Attach a drawing, datasheet or photo if you have one; it usually saves a round trip.
Part of IBG Group
- Becatech
- Incotech
- ModICE
- IBG Industries