In the fast-moving world of electrical and industrial purchasing, digital catalogs are essential.
This article highlights 10 of the leading online catalogs in 2025, from highly specialized platforms like Nassau National Cable to broad distributors like Grainger and Fastenal. Each brings a unique combination of product depth and service capabilities.
Product range includes:
SER, SEU, URD, DLO, MC, TC-ER, PV wire, medium voltage cable
NM-B(ROMEX), THHN, XHHW-2, RHW-2, USE-2
SOOW, SEOOW, W type, welding cable, pump and marine cable
Conduit, boxes, disconnects, fittings, panels, grounding devices
PLCs, HMIs, relays, power supplies, terminal blocks, and sensors
Motors, fasteners, tools, PPE, lighting, adhesives, HVAC
Connectors, lugs, cable ties, mounting clips, heat shrink, connector sets
We have selected products based on:
Scope and selection
Specialization and depth
Digital capabilities
Service and logistics (delivery, complete packing, etc.).
Supply chain transparency
Without further ado, let’s dive into our lineup:
1. Nassau National Cable
NNC is known for specializing in electrical wires and cables. It offers one of the most comprehensive online catalogs dedicated to power distribution, industrial systems, renewable energy and underground infrastructure. Nassau has evolved from a surplus dealer to a full-scale cable distributor, serving commercial, residential and utility markets across the country since launching its e-commerce platform in 2013.
NNC sells both copper and aluminum conductors across a wide range of insulation types (PVC, XLPE, EPR, Nylon, Thermoplastic Rubber)
Covers Construction wire (NM-B ROMIX, THHN, XHHW-2), Service entrance (SER, SEU), and Underground distribution (Double, Triple, and Quadruple URD)
Offers Drawer Cable (TC-ER) For industrial use, DLO and W type For flexible portable energy, Soo and sio For harsh environments, and PV wires For solar installations
Includes Armored cable (MK), Control cable, Pump cable, Submarine cableand The hardware cable is shielded
Accessories include lugs, wire pulling compounds, heat shrink tubing, and connectors
A wide variety of Specialty cableincluding:
Fiber optic cable (224 SKU)
Submarine cables and shipyards (374 SKUs)
Leading automotive wiring and electronics (153 SKUs)
Submersible pump cables, mining and industrial cables with medium voltage (up to 35 kV) and low voltage options
Also holds Belden Cables, Generator Cables, Portable Cords, Category Cablesand Electrical cable with EMEA specifications
Accessories included More than 2000 SKUs: Wire lugs, connectors, heat shrink, pull-ups, mounts, displays, enclosures, and outlet boxes
Features customization Clearance department And support for Custom quotes
Most products can be ordered By foot With cut accuracy and real-time quotes
Best for: Contractors, engineers and ordinary electrical buyers who supply any electrical cables. NNC’s premier cable storefront supports both everyday wiring needs and complex industrial specifications with cut orders, real-time quotes, and product sourcing across thousands of SKUs, all with fast turnaround and project-based support.
2. Grainger
This platform is known for its huge catalog of maintenance, repair, overhaul, and industrial supplies that supports commercial, industrial, and institutional buyers across the United States. Since 1927, Grainger has been a one-stop shop for everything from wiring equipment to facility maintenance tools.
THHN electrical catalog includes THHN wiring, conduits, outlets, switches, enclosures, and controls.
Expanding to include plumbing, lighting, engines, safety equipment, HVAC, and janitorial supplies
The store is divided into intuitive industry categories with real-time inventory and contract pricing
Best for: Large purchasing departments and facility managers supply across multiple electrical and industrial categories.
3. Amazon Business
Amazon Business is Amazon’s B2B affiliate platform. This platform is known for bringing the convenience of Amazon B2C to the business world, offering millions of SKUs that include tools, meters, wiring accessories, and various electrical components.
Lists coils of wire, connectors, conduit fittings, hand tools, testers, and breaker panels
Fast and familiar checkout experience with tax-free tools and quantity discounts
The Marketplace model provides product depth and technical information varies by seller
Best for: Small teams and merchants who prioritize convenience and fast shipping over product specialization.
4. McMaster Carr
This platform is known for its accurate catalog and exceptional speed. It focuses on wiring accessories and infrastructure devices.
Products include terminals, connectors, clips, conduits, enclosures and cable support devices
Provides drawings and technical specifications for almost every item
The simple design supports quick reordering and technical matching
Best for: Engineers and technicians who need high-precision mechanical accessories and components quickly.
5. RS Americas (RS Group)
RS Americas has a strong focus on industrial automation and panel building components. It serves OEMs and system integrators. The platform is formerly known as Allied Electronics.
Holds PLCs, relays, connectors, sensors, power supplies, terminal blocks, and control wires
Provides the best brands with a wide range of specifications
The catalog supports industrial design and building automation
Best for: Control board designers, integrators and automation engineers source wiring components.
6. Newark (Item 14)
Newark is known for supporting electronics laboratories, prototyping environments, and R&D teams. It focuses on board-level components and small-scale wiring needs.
Products include lead wire, test leads, meters, kits, and prototyping tools
It also offers sensors, switches, development boards, and soldering equipment
Wide range filtering by electrical specifications and insulation type
Best for: Electronic engineers and designers work with circuits, not conduits or building wires.
7. Al-Sahm Electronics
Arrow Electronics has deep expertise in embedded systems, IoT and peripheral components. It provides OEMs with the essential elements for modern connected devices.
Products include sensors, microcontrollers, development kits, edge computing modules and boards
It also offers engineering support tools and digital design resources
Do not focus on field wires or cables
Best for: Developers and manufacturers build embedded or connected systems.
8. Sonepar USA
Sonepar USA offers integrated electrical distribution to commercial and industrial contractors. Sonepar combines online tools with branch-based logistics support.
Holds cables, conduits, lighting, circuit protection, panels and controls
Supports national accounts and project-based demand
Online ordering is available with branch pickup
Best for: B2B clients manage larger electrical constructions across multiple trades.
9. Standard Electrical Supplies Company
This platform is best known for serving industrial control and automation customers with a focus on panels, enclosures and programmable components.
The product range includes PLCs, HMI devices, push buttons, relays and safety devices
Powerful in controlling wiring accessories and mounting hardware
The catalog supports both price-based ordering and online ordering
Best for: Factory automation teams and OEMs need control and fencing components.
10. Fixed
The company combines branch-based service with an extensive online catalog. Originally a fastener supplier, Fastenal now serves industrial customers with selected tool, safety and electrical products.
Provides wiring tools, personal protective equipment, cable clamps, attachments, test equipment and conduit fittings
Known for its vending machines and on-site supply management
Limited in cable, but durable for jobsite accessories
Best for: Industrial teams and construction teams who want local access, job site refurbishment and general tooling support.
