Castor

What Castor does

Castor AS is a Norwegian private limited company founded in 1978 by Thor G. Pettersen, headquartered in Solbergmoen in the Drammen area of Buskerud county. The company develops, produces, and sells fastening materials and cable pulling tools targeted at professional electrical installers, building contractors, power utilities, and trade schools. Its core technology centers on specialized installation hardware for fastening cables, pipes, and conduits, and on cable pulling systems — including own-brand nylon, glass fiber, and steel pull springs (RP1, RP5, GF3), cable and drum rollers (XB 300/500), fishing rod sets (RunpoSticks), and electric and petrol-powered pull line blowers (EZ15/50/100/300) — augmented by patented features such as the RunpoGlider RG7 swivel guide head and the C-pack assortment case system. The portfolio also includes cable protection systems (Kabelvern) with Magnelis C5 corrosion protection for EV charger and demanding outdoor installations.

The business model is hardware sales through a multi-tier channel: a direct engagement layer serving project customers and building contractors on landmark Norwegian projects (Drammen Sykehus, Radium Hospitalet Oslo, Gardermoen Lufthavn, IKEA Slependen, Den norske Opera, Telenor Arena), and a wholesale distribution layer via Ahlsell, Solar Norge, Onninen, Berggård Amundsen, Elektroimportøren, and ELdirekte. In parallel, Castor is the Norwegian marketing/distribution partner for international specialty manufacturers Runpotec (177 SKUs), Wiska (52 SKUs), nVent CADDY, Edding, Multifly, and Zeitler, giving it a portfolio breadth that single-brand manufacturers cannot match domestically. Pricing is quoted in NOK excluding VAT, with freight and small-order surcharges (e.g., NOK ~250 on orders under NOK 1,500, NOK ~145 per Euro pallet); no public price list is published.

The company is described as one of Norway's leading players in the electrical installation market, with products delivered across Norway, Sweden, and Finland, and it holds Miljøfyrtårn (Eco-Lighthouse) environmental certification (dated 01.09.2025). GTM is anchored in a biennial flagship presence at Eliaden, Norway's largest electro/energy/automation trade fair (20,000+ visitors in 2024), supported by content marketing, an online catalog, email newsletter, and active LinkedIn, Facebook, Instagram, and YouTube channels.

Name

Castor

Legal name

Castor AS

Website

https://castoras.no

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

11–50 employees

Short description

Norwegian supplier of fastening materials, cable pulling tools, and installation accessories for professional electrical contractors, distributing its own-brand portfolio alongside international brands (Runpotec, Wiska, nVent CADDY, Edding, Multifly, Zeitler) via Norwegian wholesalers across Norway, Sweden, and Finland.

Ownership category

akta.pro rank

Headquarters

HQ city

Drammen

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Sales - Fastening Materials: Sale of proprietary and third-party branded fastening materials including clamps, anchors, screws, plugs, wire, chain, threaded rods, shot-firing systems, saddles, beam clamps, profile rails, and mounting hardware for roofs and ceilings.
2. Hardware Sales - Cable Pulling Tools: Sale of cable pulling equipment including pull tapes/springs (nylon, glass fiber, steel), rollers, fish tape sets, winches, pulling ropes, blowing tools, pull socks, lubricant, cameras, and cable length meters.
3. Hardware Sales - Tools, Marking, Cable Protection & Accessories: Sale of tools (insertion tools, drill bits, bits & socket wrenches), marking products, cable protection systems, and nipples/accessories for pipes and boxes.

Go-to-market motion2 records

Distribution channels7 records

Marketing channels5 records

Core offering

Castor AS develops, produces and sells fastening materials, cable pulling tools, cable protection products, and nipples (cable glands) with accessories for the electrical installation market. The company offers its own Castor-branded portfolio together with distributed international brands including Runpotec, Wiska, nVent CADDY, Edding, Multifly, and Zeitler. Products are sold through Norwegian electrical wholesale distributors and directly to project customers across Norway and neighboring Nordic markets.

Product overview

Castor AS is a Norwegian company established in 1978 that develops and supplies fastening materials, cable pulling tools, cable protection, marking products, nipples, and accessories for the electrical installation market. The company's product portfolio includes both own-brand products and distributed international brands. Own-brand offerings center around Castor clamps (pipe clamps, cable clamps, beam clamps), Trekkefjær cable pulling springs (nylon RP series and glass fiber GF series in various lengths), Roller cable/pipe rollers (XB 300, XB 500 series), Fiskesett fishing rod systems (RunpoSticks), Blåsemaskin blowing machines (EZ series), Kabelvern cable protection systems, and comprehensive C-pack assortment cases. Castor distributes several international brands: Runpotec (177 products - cable routing, rollers, cameras), Wiska (52 products - cable entries and nipples), nVent CADDY (fastening solutions), Edding (marking materials), Multifly (ceiling mounting), and Zeitler (cable installation technology). The company focuses on time-saving and innovative solutions for installers and electricians, serving customers throughout Europe.

Differentiator

Problem solved

Functional benefit

Products and services

• Castor Clamps (Castor klammer)

Quantifiable outcome

• Eliaden trade fair 2024 attracted over 20,000 professional visitors; Castor distributed over 1,400 goodie bags

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core.

• RunpoteccoreTechnology or IntegrationRunpotec is an innovative Austrian manufacturer specializing in cable routing systems, cable rollers, inspection cameras, and cable length meters. Products are produced in-house in modern factories. Castor distributes Runpotec products (177 products listed on castoras.no), including the RP5 cable pulling system, RunpoSticks fishing rods, XB-500/300 cable & drum rollers, and the Capstan winch CW800E. Products are characterized by high quality and fast delivery.
• WiskacoreTechnology or IntegrationWiska is one of Europe's leading manufacturers of cable glands with nipples and accessories. With roots dating back to 1925, when they launched the world's first plastic cable gland, they offer a broad range in plastic, brass, and stainless steel. Castor distributes Wiska products (52 products listed), including cable glands, counter-nuts, reduction nipples, quick-lock nipples, and membrane nipples.
• nVent CADDYcoreTechnology or IntegrationnVent CADDY is a globally recognized supplier of fastening solutions for electrical systems, HVAC, data communications, fire protection, and mechanical installations. Since 1956 they have delivered safe, efficient and user-friendly products that simplify installation work and improve productivity, while meeting applicable building regulations and industrial standards. Particularly known for their broad range of fasteners, strut rails, and lighting suspension from steel structures.
• Zeitler AGcoreTechnology or IntegrationZeitler AG is a Swiss manufacturer specializing in cable installation technology. Since 1957 the company has developed innovative solutions that simplify and streamline the process of pulling cables in pipes and ducts. Their product portfolio includes blow machines for passing through pipes in a very time-saving way. These products are designed to be compact, user-friendly and efficient, covering a wide range of applications from fiber optic installation to electrical cables in buildings and underground infrastructure. Castor distributes Zeitler products (16 products listed), including the EZ15, EZ50, EZ100, and EZ300 pull line blowers.
• Ahlsell NorwaycoreChannel Partner/ Reseller/ DistributorMajor Norwegian electrical wholesale distributor. One of the primary distribution channels through which Castor products reach end customers in the Norwegian market.
• Solar NorgecoreChannel Partner/ Reseller/ DistributorMajor Norwegian electrical wholesale distributor. One of the primary distribution channels through which Castor products reach end customers.
• Onninen NorwaycoreChannel Partner/ Reseller/ DistributorNorwegian electrical wholesale distributor. One of the primary distribution channels for Castor products in the Norwegian market.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Würth: World's largest direct-selling distributor of fastening, assembly, and installation materials to trade professionals. Closely comparable model to Castor's in terms of trade-channel distribution of screws, anchors, clamps, and consumables, with a much wider product range and global footprint.
• OBO Bettermann: Major European manufacturer of cable management, fastening, and electrical installation systems. Comparable to Castor in serving electrical installers with clamps, cable supports, and routing accessories, but with a much broader own-manufactured portfolio and direct country subsidiaries rather than single-distributor model.
• Hilti: Global broadline supplier of fastening, drilling, and installation tools for construction and electrical trades. Directly comparable to Castor in serving professional installers with fastening hardware, though Hilti is much larger, more global, and operates a direct sales force rather than wholesale-channel model.
• REHAU (Building Solutions): European supplier of installation systems for electrical, plumbing, and heating trades, including pipe clamps and fastening systems. Comparable to Castor in selling fastening systems through wholesale to installers, although broader and manufacturer-led versus Castor's distribution-and-own-brand hybrid.

Direct peers

• Runpotec: Austrian manufacturer of cable routing and pulling systems (RP series, RunpoSticks, XB rollers) that Castor distributes in Norway. Directly comparable as a product-line peer in cable-pulling tools, even though the business relationship is principal-distributor rather than competitor.
• Wiska (Marc KG): European manufacturer of cable glands and entry accessories since 1925, distributed by Castor in Norway. Directly comparable as a peer brand in the cable gland and accessory category, and a sister-product overlap to Castor's own nipples range.
• nVent CADDY: Globally recognized fastening-solutions brand for electrical, HVAC, and mechanical installations - one of Castor's principal distributed brands and a peer in the same cable-and-conduit fastener category. Comparable because it is a brand competing alongside Castor's own Castor clamps and C-fix ranges for the same installer specification.

Others

• Ahlsell (Nordic distribution): One of the largest Nordic technical wholesale distributors for installation, tools, and supplies. Comparable as a channel partner (Castor sells through them) and adjacent as a peer for who controls the customer interface for electrical installers in Norway.
• Solar Norge: Major Norwegian electrical and technical wholesale distributor and a key channel partner for Castor. Comparable as an adjacent peer in the trade channel, illustrating both the leverage and dependence of Castor's go-to-market on a small number of large wholesalers.

Regional players

• Elko (Schneider Electric brand): Norwegian market leader in electrical installation products (sockets, switches, mounting boxes) under the Elko brand. Comparable as a Norwegian electrical-installation supplier selling through the same wholesale channels (Solar, Onninen, Ahlsell), though their focus is wiring accessories rather than fastening and pulling tooling.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@CastorAS
• Facebookfacebook.com/CastorNorge
• LinkedInlinkedin.com/company/castor-as
• Instagraminstagram.com/castor_as

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Castor