Astrolkwx B.V.

What Astrolkwx B.V. does

Astrolkwx B.V. is a Rotterdam-headquartered power electronics company and value-added distributor that supplies components, custom assemblies, and proprietary solid-state switching solutions to industrial customers across four primary verticals: maritime, renewable energy, traction (railway), and e-mobility. The company was originally founded as KWx in 2002 and was acquired by Astrol Electronic AG in 2025, after which it was rebranded Astrolkwx B.V. It employs 21 people, of whom roughly half are technical sales consultants specialized by vertical, supported by a Managing Director, Marketing Manager, Purchase Manager, Ambassador, Office Manager, Back Office Support, and a Graphic Designer.

The company's technology stack spans both proprietary products and represented A-brand lines. On the proprietary side, Astrolkwx designs and manufactures a modular solid-state DC breaker Platform B (0.35-6 kA, up to 1.5 kV) with typical breaking times of 6 µs and DP3 marine compliance, plus latching current limiters for battery string protection, and liquid-cooled rectifiers up to 3,500 A. On the distribution side, it represents 12+ manufacturers including Littelfuse, Hitachi Energy, Eaton, Sirio, Danotherm, AIC Europe, morEnergy, Boyd Corporation, MECC-AL, Anysolar, and Petercem, offering semiconductors (IGBTs, SiC MOSFETs, thyristors, diodes), supercapacitors, high-power resistors, transformers, capacitors, fuses, busbars, sensors, and heatsinks. The product portfolio spans power ranges from 50 kW to 10 GW.

The business model is sales-led, anchored on a structured 25-minute "speed date" technical meeting as the first touchpoint, supplemented by Lunch & Learn on-site sessions at system integrators (notably in the marine sector), a technical blog, and active social channels. Revenue is generated primarily through hardware sales of standard and customized components and assemblies on a quote-based, often multi-year contractual basis. Named flagship customers include Kongsberg Maritime (CSOV range), Cadeler (A-Class WTIVs), Eekels Technology/TBI/MarPower (Lake Ontario hybrid electric ferries built by Damen Shipyards), Elkon (Svelvik passenger ferry), and PRE (10 kW EV charging modules). The company is actively expanding into AI data center DC power architectures as a new vertical.

Name

Astrolkwx B.V.

Legal name

Astrolkwx B.V.

Website

https://astrolkwx.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Astrolkwx B.V. is a Rotterdam-based power electronics distributor and manufacturer of proprietary solid-state DC breakers, supplying components and custom assemblies to maritime, renewable energy, railway, e-mobility, and data center customers. It represents 12+ A-brand manufacturers and designs its own modular Platform B DC breaker technology.

Ownership category

akta.pro rank

Product category

Industrial Power Electronics Components

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Semiconductor and Related Device Manufacturing (334413), Electrical Equipment Manufacturing (33531), Relay and Industrial Control Manufacturing (335314), Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Switchgear & Switchboard Apparatus (3613), Semiconductors & Related Devices (3674), Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

High-Voltage & High-Power Conversion (HVDC supplies, traction/rail converters, large rectifiers) (IMAGADAH)

akta.pro secondary industries

Circuit Protection Devices (MCBs, MCCBs, ACBs, fuses, RCD/GFCI, surge protection) (IMAGAEAB), Passive Components (Resistors, Capacitors, Inductors, Ferrites) (IMAGAJAA), Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA), DC/DC Converters & Battery Interface Power Electronics (EUAFAIAD)

Keywords

• Power electronics components
• Solid-state DC breakers
• Maritime power systems
• High-power semiconductors
• Railway electrification components

Headquarters

HQ city

Rotterdam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Power electronics component distribution: Astrolkwx supplies A-brand power electronics components (semiconductors, breakers, rectifiers, capacitors, resistors, transformers, sensors, fuses, heatsinks, busbars) sourced from represented brands including Littelfuse, Hitachi Energy, Eaton, Sirio, Danotherm, AIC Europe, morEnergy, and others. Revenue is generated through the sale of standard and customized components and assemblies to industrial customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Astrolkwx B.V. distributes A-brand power electronics components and develops/manufactures proprietary solid-state DC breakers and latching current limiters. The portfolio spans semiconductors, rectifiers, capacitors, resistors, transformers, sensors, fuses, heatsinks, and laminated busbars, supplied as standard components or as customized assemblies. Customers are industrial buyers in maritime, renewable energy, traction (railway), and e-mobility who need application-specific power conversion, protection, and switching solutions.

Product overview

Astrolkwx B.V. is a power electronics company and distributor of A-brand power electronics components, not a single unified product but rather a comprehensive portfolio of components and solutions. The company supplies standard components and develops tailored customer-specific assemblies in collaboration with partners. The product range centers on solid-state DC breakers (including the modular Platform B series up to 5 kA), various rectifier types (air and liquid-cooled from Littelfuse up to 3.5 MW), power semiconductors from Hitachi Energy (IGBTs, SiC MOSFETs, press-pack modules for 50 kW to 10 GW applications), and supporting components including Eaton supercapacitors (420 kW peak), Danotherm high-power resistors, capacitors, transformers (Sirio), blocking diodes, heatsinks, sensors, fuses, laminated busbars, and CCS systems. The company serves maritime, traction/railway, renewable energy, and e-mobility industries, offering both off-the-shelf components and custom-engineered assemblies.

Differentiator

Problem solved

Functional benefit

Products and services

• Solid-state DC breakers (Platform B) Proprietary solid-state DC circuit breakers using IGBT technology for ultra-fast, arc-free fault isolation in DC power systems. Modular Platform B scales from 0.35 to 6 kA at up to 1.5 kV nominal, with multi-sensor and multi-controller architecture for redundancy and DP3 marine qualification. Intended for system integrators and engineering teams in maritime, renewable energy, traction, e-mobility, and data center DC applications.
• Latching Current Limiters for battery string protection Proprietary current limiting devices designed to protect battery strings from overcurrent conditions in energy storage systems. Offered to engineering teams building battery packs and energy storage installations.
• Air and liquid-cooled rectifiers Power rectifiers for converting AC to DC, supplied in air-cooled (SXC/SXB series) and liquid-cooled (aluminium-nitride water-cooled, up to 3,500 A DC, 3×690 Vac input, compact 429×290×253 mm) configurations. Targeted at industrial customers needing high-current DC supplies.
• Blocking diodes High-power blocking diodes that prevent reverse current flow in DC systems, commonly used in shore-power applications for vessels and in battery string protection. Supplied to maritime and energy storage customers.
• Grid DNA (ONIS by morEnergy) Measurement and monitoring solutions for power grid analysis, enabling precise tracking of electrical parameters. Distributed for industrial customers needing grid diagnostics.
• Supercapacitors (Eaton XLHV) High-reliability supercapacitors such as the Eaton XLHV series with peak power up to 420 kW and up to 20 years of design life. Targeted at backup power, peak shaving, pulsed power, and hybrid power applications across renewable, marine, and industrial customers.
• Capacitors (metal film and electrolytic, AIC Europe) Metal film and electrolytic capacitors (including AIC Europe screw-terminal and snap-in types) with high capacitance-to-volume ratios for power supply, audio amplifier, and filter applications. Supplied to industrial power electronics customers.
• Power capacitors High-power capacitors used for energy storage and power conditioning in industrial applications.
• High-power resistors (Danotherm) Danotherm brand high-power resistors in air-cooled, liquid-cooled, and fan-cooled variants covering a 6–1,450 kW power range. Used as braking resistors, filter resistors, energy-dumping resistors, and ship equipment components for traction, marine, and industrial customers.
• Littelfuse semiconductors Power semiconductors from Littelfuse (including IXYS) covering IGBTs, MOSFETs (Si and SiC), thyristors (SCR and TRIAC), power diodes, gate drivers, power modules, solid-state relays, and stacks/subsystems/assemblies. Supplied to industrial power electronics customers across all four verticals.
• Hitachi Energy semiconductors High-power Hitachi Energy semiconductor portfolio including HiPak IGBT and diode modules, StakPak IGBT press-pack modules, LinPak IGBT and SiC MOSFET modules, RoadPak SiC e-mobility modules, IGCTs, GTOs, PCTs, fast recovery diodes, rectifier/avalanche/welding diodes, 60Pak diode and thyristor modules, IGBT and diode dies, and bypass thyristors. Spans 50 kW to 10 GW applications across traction, renewable, and industrial customers.
• Solid-state Medium Voltage AC breakers Solid-state AC breakers for medium voltage applications in power distribution systems. Targeted at industrial customers needing fast, arc-free medium-voltage switching.
• Solid-state power switches Electronic switching devices for power control applications using solid-state technology. Supplied to industrial power electronics customers.
• Sirio transformers (inductive components) Sirio inductive components including mains transformers, current sense transformers, gate drive transformers, and high-accuracy current transformers for power electronics applications. Supplied to industrial customers.
• Laminated busbars Low-inductance laminated busbars that provide efficient electrical connections in power electronics systems. Supplied to industrial customers.
• Cells Contact System (CCS) Electrical connection systems for battery cells that enable efficient series and parallel connections in battery packs. Targeted at battery pack manufacturers and e-mobility customers.
• High-speed fuses (Eaton Bussmann 180D) Fast-acting fuses including Eaton Bussmann series 180D DC fuses designed specifically for DC grids, providing overcurrent protection in power electronics systems. Supplied to industrial customers.
• Heatsinks (air and liquid-cooled) Thermal management solutions including air-cooled heatsinks and liquid-cooled plates that dissipate heat from power electronics components. Supplied to industrial customers.
• Current and voltage sensors Electrical measurement sensors for monitoring current and voltage parameters in power electronics systems. Supplied to industrial customers.
• Solar cells Solar cell products supplied for renewable energy generation applications. Distributed to industrial customers in the renewable energy vertical.

Quantifiable outcome

• Solid-state DC breakers achieve typical breaking time of 6 µs (maximum 8 µs), enabling ultra-fast fault isolation in DC grids.
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eleven partnerships are on record, tiered core, flagship and supporting.

• Astrol (parent company of Astrolkwx)coreOthersAstrol Electronic AG acquired KWx (now Astrolkwx), integrating the Dutch power electronics specialist under the Astrol group. The Astrol logo appears on the Astrolkwx site header with a link to astrol.com. The parent company provides strategic direction and brand identity.
• Eekels Technology (TBI/MarPower)flagshipImplementation/ SI/ Consulting PartnerLong-standing partner and supplier of power electronics components for Eekels' marine and offshore projects. Together with Astrolkwx and manufacturer Astrol, Eekels participated in the development of the DC breaker series. Eekels uses Astrolkwx components in integrated electrical systems for vessels built by Damen Shipyards.
• Bakker SliedrechtcoreImplementation/ SI/ Consulting PartnerMarine system integrator. Astrolkwx has conducted a Lunch & Learn session at Bakker Sliedrecht's facilities, delivering power electronics knowledge to their technical team. This on-site knowledge engagement indicates a collaborative relationship for marine electrification projects.
• Kongsberg MaritimeflagshipImplementation/ SI/ Consulting PartnerKongsberg Maritime engineered the DC multi-bus ring system and integrated Astrolkwx's 1.5 kV, 3 kA solid-state DC breakers into Cadeler's A-Class WTIVs and Kongsberg's own CSOV vessel range. This is a flagship reference for Astrolkwx's marine DC breaker technology.
• LittelfusecoreTechnology or IntegrationPrimary brand represented by Astrolkwx. Products include liquid-cooled rectifiers (W3708MC300 diodes), air-cooled rectifiers (SXC/SXB series), high-speed fuses, semiconductors, and power stacks. Astrolkwx distributes the full Littelfuse power electronics range including IXYS components.
• Hitachi EnergycoreTechnology or IntegrationKey brand represented by Astrolkwx. Products include IGBT modules (HiPak, LoPak, LinPak, 62Pak), SiC MOSFET modules (RoadPak for e-mobility), press-pack diodes, IGBT dies, thyristors (PCTs), fast recovery diodes, welding diodes, rectifier diodes, avalanche diodes, and bypass thyristors. Power range from 50 kW to 10 GW.
• EatoncoreTechnology or IntegrationBrand represented by Astrolkwx. Products include XLHV Supercapacitors (420 kW peak power, up to 20-year design life), Bussmann Series 180D High Speed DC Fuses for DC grids, and supercapacitor modules for backup power, peak shaving, and hybrid power systems.
• Sirio Inductive ComponentssupportingTechnology or IntegrationBrand represented by Astrolkwx. Products include mains transformers, current sense transformers, gate drive transformers, and high accuracy current transformers for power electronics applications.
• DanothermsupportingTechnology or IntegrationBrand represented by Astrolkwx. Products include liquid-cooled (WHBSA, WHBS series, 6–1450 kW power range) and air-cooled high power resistors used as braking resistors, filter resistors, energy dumping resistors, and ship equipment components.
• morEnergysupportingTechnology or IntegrationBrand represented by Astrolkwx. Products include Grid DNA measurement solutions and ONIS products for power electronics measurement and monitoring.
• AIC EuropesupportingTechnology or IntegrationBrand represented by Astrolkwx. Products include electrolytic capacitors (screw terminal and snap-in types) and supercapacitors with high capacitance-to-volume ratio for power supply, audio amplifier, and filter applications.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ABB: Major industrial power electronics OEM that manufactures solid-state and hybrid breakers, drives, and DC grid protection. Competes with Astrolkwx's proprietary solid-state DC breaker line in marine and rail while also serving as a potential supplier for related components.
• Siemens: Industrial conglomerate with a strong low-voltage and medium-voltage switchgear portfolio, including solid-state switching products. Competes with Astrolkwx in DC protection and electrical distribution, particularly in data center and rail applications.
• Sensata Technologies: Industrial sensor, power management, and electrical protection component manufacturer (including former CCI assets). Comparable to Astrolkwx in producing circuit protection and sensing components for industrial, e-mobility, and energy applications.
• Avnet: Global broad-line electronics distributor with broad semiconductor and power component coverage. Overlaps with Astrolkwx in power electronics distribution but serves a much wider customer and product set.
• Eaton: Major electrical equipment manufacturer whose Bussmann fuses, supercapacitors, and power management products are among Astrolkwx's represented brands. Competes with Astrolkwx as a vertically integrated component supplier while also being a key distribution partner.
• Arrow Electronics: Global broad-line electronics distributor with a sizable power solutions business. Competes with Astrolkwx for large power semiconductor and component contracts, but operates at far greater scale and across all major geographies.

Direct peers

• Rutronik: European broad-line electronic components distributor headquartered in Germany with a strong power semiconductors and embedded portfolio. Mirrors Astrolkwx's model of combining franchise distribution with vertical-focused application support for industrial, automotive, and renewable customers.
• LEM: Specialty manufacturer of current and voltage transducers/sensors for power electronics applications. Highly comparable to Astrolkwx's sensor and measurement product line, and serves overlapping industrial, traction, and renewable energy customers.
• TTI Inc. Specialty electronics distributor (part of Berkshire Hathaway) with a strong discrete and power semiconductor franchise. Comparable to Astrolkwx in selling discrete power components, passives, and connectors to industrial customers with technical sales support.
• Richardson RFPD: Specialty distributor of RF, wireless, and power electronics components, with a power-conversion and semiconductor focus very similar to Astrolkwx. Both combine niche component distribution with application engineering and vertical specialization for industrial customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@astrolkwx
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/astrolkwx
• Instagraminstagram.com/astrolkwx

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Astrolkwx B.V.