SELCO
SELCO ApS is a Danish industrial electronics manufacturer, founded in 1984, that designs and sells certified control, protection, monitoring, and diagnostics equipment — alarm monitors, engine and generator controllers, protection relays, and arc flash detectors — for the global marine industry and land-based industrial power markets, distributed through 50+ country networks and direct subsidiaries in the USA and China.
- Company typePrivate
- Founded1984
- HeadquartersRoskilde, Denmark
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What SELCO does
SELCO ApS is a Danish private industrial electronics company founded in 1984 and headquartered in Roskilde, Denmark, with regional subsidiaries in Norcross, Georgia (USA) and Shanghai (China). The company designs, manufactures, and sells electronic equipment for control, protection, monitoring, and diagnostics of power generation and distribution systems, primarily serving the global marine industry and secondarily land-based industrial power applications. Its product portfolio spans alarm monitoring units (M1000 Plus), marine engine controllers (M2500), integrated generator controllers (C6200 FlexGen), modular power management systems (SIGMA), a full range of marine-certified protection relays (T-Line) and cost-optimized industrial relays (G-Line), arc flash detection systems (AF0100, AF0500, PGR-8800), accessories, and long-term service and spare parts support for legacy installations dating back more than 30 years. Most products carry type approvals from major marine classification societies including ABS, Bureau Veritas, DNV, CCS, KRS, Lloyd's Register, GL, RMRS, and others, and the company operates under ISO 9001 quality management certification.
The company's revenue model is primarily hardware sales — proprietary embedded electronic devices sold through a global authorized distributor network covering 50+ countries — supplemented by a smaller service and repair revenue stream with fixed test/repair pricing and standardized handling fees for out-of-warranty returns. Go-to-market is channel-led: SELCO relies on regional distributors for most territories and on its two wholly-owned subsidiaries for the USA and China, while engaging directly with shipyards, OEMs, and system integrators for enterprise and classification projects via its internal sales engineering team. SELCO's products are designed for interoperability within an integrated SELCO stack and expose standard industrial protocols (Modbus RTU/TCP, SAE CAN J1939, CAN Bus, RS-232/485) for SCADA/HMI integration, which both strengthens customer lock-in and constrains the addressable competitive set to vendors with comparable marine certifications. The company employs 51–100 people and is independently owned, with no disclosed external investors, parent entity, or M&A activity.
SELCO firmographics
Firmographics- Name
- SELCO
- Legal name
- SELCO ApS
- Website
- https://selco.com
- Company type
- Private
- Founded year
- 1984
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- SELCO ApS is a Danish industrial electronics manufacturer, founded in 1984, that designs and sells certified control, protection, monitoring, and diagnostics equipment — alarm monitors, engine and generator controllers, protection relays, and arc flash detectors — for the global marine industry and land-based industrial power markets, distributed through 50+ country networks and direct subsidiaries in the USA and China.
- Ownership category
- akta.pro rank
SELCO industry classification
Industry- Product category
- Marine Power Control and Protection Systems
- NAICS
- Relay and Industrial Control Manufacturing (335314), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Electrical Equipment Manufacturing (33531), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Electronic & Other Electrical Equipment (No Computer Equip) (3600), Measuring & Controlling Devices, Nec (3829), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)
- akta.pro primary industry
- Marine Automation, Control & PLC/SCADA Systems (IMAJAJAC)
- akta.pro secondary industries
- Integrated Marine Electrical Systems & Switchboards (IMAJAJAA), Electrical Engineering & Power Distribution (Generation, Switchboards, Cabling, Lighting) (IMAJAGAF), Propulsion Control, Monitoring & Automation (ECS, PMS interface) (IMAJAHAH)
Keywords
Where SELCO is headquartered
LocationHeadquarters
- HQ city
- Roskilde
- HQ country
- Denmark
- HQ region
- Europe
Offices3 records
Markets served
SELCO business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales, Infrastructure
Revenue model
- Electronic Equipment Sales: SELCO develops, manufactures and sells electronic equipment for control, protection, monitoring and diagnostics. Products include alarm monitoring systems, engine controllers, generator controllers, protection relays, and accessories. Revenue is generated through direct product sales and through distributor network.
- Service & Repair: The company provides repair services for defective products. Repair work is performed by SELCO's service team with fixed prices for test and repair work. Handling fee of 150 EUR applies if guarantee does not apply and customer declines repair.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Repair services with fixed pricing and handling fees |
Go-to-market motion2 records
Distribution channels1 record
Marketing channels4 records
SELCO product offering
Product offeringCore offering
SELCO develops, manufactures and sells electronic equipment for control, protection, monitoring and diagnostics in the marine industry. The product portfolio spans alarm monitoring units, marine engine controllers, generator controllers (FlexGen C6200 and modular SIGMA system), protection relays (T-Line marine-certified and G-Line land-based), and arc flash detection systems. Products are engineered to operate in harsh environments, comply with major marine classification society standards, and integrate with industrial SCADA/HMI systems via Modbus and CAN Bus protocols.
Product overview
SELCO is a Danish company that develops, manufactures, and sells electronic equipment for control, protection, monitoring and diagnostics in the marine industry. The product portfolio centers on three interconnected solution areas: Alarm Monitoring (M1000 Plus) for surveying alarm inputs; Engine Control (M2500) for marine engine management; and Generator Control comprising the FlexGen (C6200) integrated controller and the modular SIGMA system (S6000, S6100, S6500, S6610) for power management. Supporting these are T-Line marine-certified protection relays (reverse power, overcurrent, voltage, frequency, insulation monitoring) and G-Line cost-optimized relays for land applications. Arc Flash Detection systems (AF0100, AF0500, PGR-8800 with sensors) provide safety solutions. Accessories and service/spare parts complete the offering. All products support industrial protocols including Modbus RTU/TCP and CAN Bus for SCADA/HMI integration.
Differentiator
Problem solved
Functional benefit
Brands
- FlexGen: Integrated generator controller product line built on state-of-the-art technology platform
- SIGMA
- T-Line
- G-Line
Products and services
- M1000 Plus Alarm Monitor A compact 10-channel alarm unit engineered for demanding marine and industrial environments with IP56 protection rating. Features Ethernet (Modbus TCP), embedded web server, built-in alarm log, USB configuration interface, RS485 MODBUS-RTU, and expandable alarm systems capability. Designed for shipboard and land-based electrical installations requiring reliable alarm surveillance.
- M2500 Engine Controller Marine engine controller for control, monitoring and protection of engines in marine applications including auxiliary generators, emergency generators, harbour generators, and propulsion engines. Supports SAE CAN J1939 and discrete sensors with 90 configurable alarms and 12 programmable output relays.
- C6200 FlexGen Generator Controller Integrated generator controller providing protection, frequency stabilization, voltage stabilization, check and automatic synchronization, active and reactive load sharing, programmable inputs and outputs, and data acquisition for diesel generators. Supports grid paralleling and Power Factor control with RS485 MODBUS RTU communication.
- SIGMA Power Management System Modular generator protection and control system consisting of S6610 Power Management, S6500 User Interface, S6100 Control Module, and S6000 Protection Module. Provides 3-phase measurement, short circuit protection, overcurrent protection, reverse power protection, excitation loss protection, and 2-level load shedding for marine and industrial power management.
- T-Line Protection Relays Complete range of marine-certified protection relays for generator control and power monitoring including reverse power relays, excitation loss relays, overcurrent relays, frequency relays, voltage relays, insulation monitoring, and auto-synchronizers.
- G-Line Protection Relays Generator protection relays for land-based applications providing cost-effective solutions with high quality measuring techniques and programmable options. Includes voltage relays, frequency relays, and current relays for DIN rail or screw mounting.
- Arc Flash Detection System Rapid arc flash detection systems including AF0100 and AF0500 arc flash relays, PGR-8800 relay, fiber-optic sensors (PGA LS20, PGA LS30), and point sensors (PGA LS10 series). Generates tripping pulse in less than 1 millisecond using solid-state IGBT switch to detect arc faults in switchboards, transformers, and capacitor load banks, improving personnel safety and minimizing equipment damage.
- Service & Spare Parts Long-term service and legacy spare parts support including original spare parts for marine installations made thirty years ago or more, return material authorization process, and fixed-price repair services with handling fees for declined out-of-warranty repairs.
Quantifiable outcome
- Arc flash detection in less than 1 millisecond using solid-state semiconductor switch (IGBT)
- +2 more outcomes
Companies that use SELCO
Customer profileSegments2 records
Ideal customer profiles2 records
SELCO technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
SELCO partnerships and signals
Strategic signalPartnerships
16 partnerships are on record, tiered standard, regional master and regional subsidiary.
- I S Systems Pty LtdstandardAuthorized distributor for Australia. Located at 14 Laverick Avenue, Tomago NSW 2322. Contact: Mr. Matthew Keegan. Serves Australian marine and industrial markets.
- AMS&S bvbastandardAuthorized distributor for Belgium. Located at Groendreef 11, BE-2920 Kalmthout. Contact: Mr. Philippe van Reeth.
- DECKMA GmbHstandardAuthorized distributor for Germany (Marine Applications). Located at Bahnhofstraße 79, 21224 Rosengarten-Klecken. Contact: Mr. Frank Politz.
- DSL-electronic GmbHstandardAuthorized distributor for Germany (Land Applications and Inland Navigation). Located at Textilstrasse 2, 41751 Viersen. Contact: Mr. Tony Alkier.
- Kims Marketing Pte Ltdregional masterAuthorized distributor for Singapore, Malaysia, Indonesia, Thailand, and South East Asia. Located at 18 Tuas Avenue 9, Singapore 639177. Contact: Mr. Chong Chee Leong.
- OMCONS Engineering Pvt. LtdstandardAuthorized distributor for India and Sri Lanka. Located in Pune, India. Contact: Mr. Prashant Prabhakar Satpute.
- ELTECO ASstandardAuthorized distributor for Norway. Located at Telemarksporten 3996, Porsgrunn. Contact: Mr. Svein Holla.
- SELCO USA, INC.regional subsidiaryRegional subsidiary office serving United States and Canada markets. Located at 4560 River Bottom Drive, Norcross, GA 30092. Contact: Mr. Anders Molte Jakobsen.
- SELCO China Ltd.regional subsidiaryRegional subsidiary office serving China market. Located at Room 428, 550 Mincheng Road, Pudong, Shanghai 200135. Contact: Mr. T. P. He.
- DSF Technologies S.a.r.lstandardAuthorized distributor for France. Located at Allée Charles Victor Naudin, Zone des Templiers - Sophia Antipolis, 06410 Biot. Serves French marine and industrial markets.
- Stavros Kassidiaris Ltd.standardAuthorized distributor for Greece. Located at 97 Agchialou & Aegaleo Str., 185 44 Piraeus. Contact: Mr. Stratos Karounias.
- MARIC Automation s.r.l.standardAuthorized distributor for Italy. Located at Via Giotto 7, 20032 CORMANO - MI. Contact: Mr. Michele Rizzi.
- Controlin BVstandardAuthorized distributor for Netherlands. Located at Glasblazerstraat 1-3, 2984 BL Ridderkerk.
- Emcomp International ABstandardAuthorized distributor for Sweden (Pulsteknik branch). Located at von Utfallsgatan 16A, SE-415 05 Göteborg.
- Wright Technologies Ltd.standardAuthorized distributor for New Zealand (Wellington Branch - Head Office). Located at 23 Fitzherbert Street, Petone, Wellington. Contact: Mr. Colin Hamer.
- KCG-Electronics LtdstandardAuthorized distributor for United Kingdom. Located at 45 Maple Avenue, Sandiacre, Nottingham NG10 5EF. Contact: Mr. sales team.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
SELCO competitors and assessment
Company assessmentBroad incumbents
- Woodward: Woodward is a US-based large-scale controls specialist for engines, turbines, and power management in aerospace, marine and industrial markets. It overlaps with SELCO on engine controllers and power management modules but addresses a much broader portfolio of platforms and OEMs.
- ABB Marine & Ports: ABB's Marine & Ports division supplies integrated power and automation systems, including generator controls and protection, for commercial vessels and offshore platforms. It is a broad incumbent that competes with SELCO on power management and switchboard control for shipyards, with deeper digital and software offerings.
- Kongsberg Maritime: Kongsberg Maritime provides vessel automation, power and energy management systems for commercial marine and offshore customers. It is a broader incumbent in integrated vessel automation that overlaps with SELCO's protection, alarm monitoring, and power management portfolio.
- Cummins Onan / Cummins Power Generation: Cummins supplies marine and industrial generator sets along with paralleling controls and power management systems. It overlaps with SELCO's generator controllers and protection relays, typically as part of an integrated genset offering rather than standalone control hardware.
- Siemens Energy Marine Solutions: Siemens Energy provides marine electrical systems, including power management, drives, and switchboards, for shipyards and offshore installations. It competes with SELCO's generator controllers and protection relays but typically as part of full integrated vessel electrical packages.
- Wärtsilä Marine Power: Wärtsilä supplies integrated marine power and propulsion systems including generator controls, power management, and automation for shipyards and operators. Its UNIC and SmartShip platforms compete broadly with SELCO's SIGMA and FlexGen offerings as part of larger vessel electrical systems.
- Schneider Electric Marine: Schneider Electric supplies power distribution, protection relays, and energy management solutions to marine and offshore customers. Its protection and monitoring relays overlap with SELCO's T-Line and G-Line products, though Schneider typically bundles these into larger electrical and digital energy management offerings.
- Eaton Marine: Eaton provides electrical power management solutions including marine-certified switchgear, protection relays, and arc flash detection. Its arc flash detection line overlaps directly with SELCO's AF0100/AF0500/PGR-8800 portfolio and competes in the same shipboard and offshore switchboard market.
Direct peers
- ComAp: ComAp (Czech Republic) designs and manufactures controller and power management products for diesel and gas gensets, marine engines, and CHP. It directly overlaps SELCO's FlexGen and SIGMA generator controller and engine controller product lines with a similar modular approach and global marine approvals.
- DEIF: DEIF is a Danish manufacturer of generator controllers, engine controls, and power management solutions for marine, offshore, and land-based applications. It is the closest direct peer to SELCO, competing head-to-head on integrated generator controllers, protection relays, and alarm monitors for marine switchboards.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
SELCO social profiles
Digital presenceSELCO compliance and trust
Trust signalCompliance15 records
SELCO financial estimates
Financial estimateRevenue estimate
Valuation estimate
SELCO leadership team
Management profileNumber of profiles
SELCO subsidiaries and ownership
Company hierarchySubsidiaries2 records
SELCO funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SELCO M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SELCO
What does SELCO do?
SELCO develops, manufactures and sells electronic equipment for control, protection, monitoring and diagnostics in the marine industry. The product portfolio spans alarm monitoring units, marine engine controllers, generator controllers (FlexGen C6200 and modular SIGMA system), protection relays (T-Line marine-certified and G-Line land-based), and arc flash detection systems. Products are engineered to operate in harsh environments, comply with major marine classification society standards, and integrate with industrial SCADA/HMI systems via Modbus and CAN Bus protocols.
Is SELCO a public or private company?
SELCO is a private company. It is classified as unknown and is currently operating.
When was SELCO founded?
SELCO was founded in 1984. It employs 51 to 100 people.
Where is SELCO based?
SELCO is headquartered in Roskilde, Denmark, in the Europe region.
How does SELCO make money?
Two revenue lines are on record. Electronic Equipment Sales are the primary driver. The others are service & Repair.
Who are SELCO's main competitors?
Broad incumbents on record are Woodward, ABB Marine & Ports, Kongsberg Maritime, Cummins Onan / Cummins Power Generation, Siemens Energy Marine Solutions, Wärtsilä Marine Power, Schneider Electric Marine and Eaton Marine. Direct peers are ComAp and DEIF.
Does SELCO have an API?
Yes. SELCO products support industrial communication protocols including RS485 MODBUS RTU for SCADA/HMI integration, Modbus TCP via Ethernet, RS232 for device communication, and CAN Bus for vehicle networking. The C6200 FlexGen provides Modbus RTU communication with configuration via RS232 commands. The S6000 SIGMA Protection Module includes RS485 MODBUS Slave and CAN Bus connectivity for system integration. Developer documentation is at www.selco.com/selco2016/wp-content/uploads/2016/04/C6200-FlexGen-Modbus-RTU-1.pdf.
What industry is SELCO in?
SELCO's product category is Marine Power Control and Protection Systems. Its primary akta.pro industry code is IMAJAJAC, Marine Automation, Control & PLC/SCADA Systems, with a secondary code of IMAJAJAA, Integrated Marine Electrical Systems & Switchboards. Its NAICS code is 335314 and its SIC code is 3823.