Sigma ProConnex C-500 Clamp Connector – Zinc Die Cast UL CSA 100-Pack

Description

Product Overview

The Sigma ProConnex C-500 clamp type connector is engineered for electricians and DIY enthusiasts who demand a blend of strength, reliability, and ease of use. Constructed from high‑grade zinc die‑cast material, the connector resists corrosion, impacts, and the wear that can compromise lesser fittings over time. Its robust build ensures a secure mechanical grip on NM cable or flexible cords, while the integrated tri‑combo screws simplify the fastening process, reducing installation time and minimizing the chance of loose connections.

Beyond its physical durability, the C-500 meets stringent safety standards, holding both UL and CSA listings. This dual certification provides peace of mind that the product complies with North American electrical codes, making it suitable for a wide range of applications from residential remodels to commercial construction projects. The connector’s design accommodates a 1/2‑inch knockout, allowing it to be used with standard conduit and box openings without the need for additional adapters or modifications.

Each package contains 100 connectors, a quantity that supports large‑scale installations or multiple smaller jobs without the need for frequent re‑ordering. The connectors are color‑coded for easy identification, and the packaging includes clear labeling of the model number (C‑500) and manufacturer (Sigma Electric), ensuring that professionals can quickly verify they have the correct part on hand. This level of organization contributes to smoother workflow on site and reduces the risk of errors.

Usage

Designed for versatility, the ProConnex C‑500 clamp connector works seamlessly with a variety of cable types. It is compatible with a single 14/2‑10/3 NM cable, as well as multiple configurations such as two 14/2, 12/2, 12/3, or 10/2 NM cables, and even three 14/2 NM cables. This flexibility makes it an ideal choice for complex wiring scenarios where multiple conductors must be terminated into a single knockout.

In addition to NM cable, the connector can secure flexible cords ranging from 0.29‑inch to 0.45‑inch in diameter. This capability is especially valuable in applications like lighting fixtures, appliance connections, and portable equipment where flexible cord termination is required. The connector’s ability to handle both rigid and flexible conductors reduces the need for multiple connector types in a toolbox, streamlining inventory and simplifying the selection process on the job site.

Typical installation environments include new construction, remodels, and repair work in both residential and commercial settings. Whether you are wiring a new kitchen, upgrading an office lighting system, or performing maintenance on industrial equipment, the C‑500 provides a reliable, code‑compliant solution. Its quick‑install design, combined with the included tri‑combo screws, allows electricians to complete terminations efficiently, which can translate into labor cost savings and faster project completion.

Why Choose Us

Choosing Sigma’s ProConnex line means selecting a product backed by decades of industry experience and a commitment to quality. Sigma Electric has a reputation for delivering components that meet rigorous performance criteria, and the C‑500 is no exception. Each connector undergoes thorough testing for tensile strength, corrosion resistance, and electrical continuity, ensuring that the product performs reliably under demanding conditions.

Our focus on safety is evident in the dual UL and CSA certifications, which guarantee that the connector adheres to the most current electrical standards. This compliance not only protects end users but also helps contractors avoid costly re‑work or inspections that can arise from using non‑certified components. The inclusion of tri‑combo screws further enhances safety by providing a secure, vibration‑resistant attachment method that minimizes the risk of loosening over time.

Customer support is a cornerstone of the Sigma experience. Buyers receive access to a dedicated technical assistance team that can answer product‑specific questions, provide installation guidance, and help troubleshoot any issues that may arise. Additionally, our after‑sales service includes a straightforward return policy and warranty coverage, reinforcing our confidence in the durability and performance of the ProConnex C‑500.

Key Features

• Durable zinc die‑cast construction ensures long‑lasting performance in harsh environments.
• UL and CSA certifications provide confidence in meeting North American safety standards.
• Tri‑combo screws included for fast, secure installation without extra hardware.
• Versatile fit for NM cable, flexible cords, and multiple conductor configurations.
• Responsive customer support and warranty backing for peace of mind.

FAQ

What size knockout does the C‑500 fit?

The connector is designed to terminate into a standard 1/2‑inch knockout, making it compatible with most conduit boxes and panels without the need for additional adapters.

Can the connector be used with flexible cords?

Yes, the C‑500 accommodates flexible cords ranging from 0.29‑inch to 0.45‑inch in diameter, allowing it to secure a variety of appliance and lighting connections.

Is the product UL and CSA listed?

Absolutely. The ProConnex C‑500 holds both UL and CSA listings, confirming that it meets the rigorous safety and performance standards required for electrical installations in the United States and Canada.

How many connectors are included in each package?

Each package contains 100 clamp type connectors, providing ample quantity for large projects or multiple smaller jobs, reducing the need for frequent re‑ordering.

What is the warranty coverage for the C‑500?

Sigma offers a limited warranty that covers manufacturing defects for a period of one year from the date of purchase, along with access to technical support for installation assistance.