3M Blue Polypropylene Connector 804 – Brass Tin‑Plated, 18‑16 AWG

Description

Product Overview

The 3M blue polypropylene connector, model 804, is engineered to deliver a secure, low‑resistance connection point for a wide range of wiring applications. Constructed from a durable polypropylene housing, the connector provides excellent electrical insulation while resisting impact, chemicals, and environmental stressors. Inside the housing, a brass element—enhanced with a tin plating—offers superior conductivity and corrosion resistance, ensuring a stable electrical path even in harsh industrial settings. The connector is sized to accommodate 18‑16 AWG solid or stranded wire as well as 14 AWG stranded wire, giving installers flexibility across multiple gauge requirements. Its color‑coded blue shell simplifies wire identification, reducing the chance of mis‑wiring during complex installations. Designed for temperatures up to 167 °F (75 °C), the connector maintains its mechanical integrity and electrical performance in high‑heat environments such as motor control panels, lighting fixtures, and automotive engine bays. The compact dimensions—8.8 x 8.8 x 6.7 inches and a weight of 4.55 pounds—allow the connector to be used in tight spaces without sacrificing strength. The product carries the reputable 3M brand, known for rigorous quality control and compliance with industry standards, making it a trusted choice for professional electricians, system integrators, and maintenance engineers.

Usage

This connector excels in a variety of control circuit wiring scenarios where a reliable splice is required without interrupting the existing conductor. In commercial building automation, it can be used to tap into power or signal lines for lighting control modules, HVAC sensors, and security system loops. For fixture wiring, the connector provides a quick, tool‑free method to extend or branch circuits for recessed lighting, pendant fixtures, and decorative LED strips. Appliance wiring benefits from the connector’s robust construction, allowing safe splicing of power cords for kitchen equipment, laundry machines, and industrial-grade appliances. In automotive and marine contexts, the connector’s resistance to moisture and vibration makes it suitable for wiring harnesses, auxiliary power feeds, and audio system installations. The blue color coding assists technicians in quickly locating the correct gauge during troubleshooting, while the tin‑plated brass element ensures low voltage drop even under load. Because the connector is intended for industrial and occupational use only, it meets the stringent requirements of NEC and IEC standards for permanent installations, providing peace of mind for compliance audits and safety inspections.

Why Choose Us

Choosing the 3M blue polypropylene connector means selecting a component that combines decades of material science expertise with practical design features. The polypropylene housing is flame‑retardant and UV‑stable, extending the service life of the connector in outdoor or exposed installations. The brass element’s tin plating not only improves conductivity but also forms a protective barrier against oxidation, which is critical for long‑term reliability in humid or salty environments. Each connector undergoes rigorous testing for tensile strength, dielectric withstand, and temperature cycling, ensuring that it performs consistently across the full range of operating conditions. 3M’s global supply chain guarantees that the product is sourced responsibly and delivered on schedule, minimizing downtime for projects that rely on timely component availability. In addition, 3M provides comprehensive technical support, including wiring diagrams, installation guides, and a dedicated helpline staffed by experienced engineers. This level of after‑sales service helps customers resolve any integration challenges quickly, reducing labor costs and project delays. By investing in a connector that is both technically superior and backed by reliable support, users can achieve higher system uptime, lower maintenance expenses, and greater overall confidence in their electrical infrastructure.

Key Features

• Blue polypropylene housing provides durable insulation and easy visual identification.
• Brass element with tin plating ensures excellent conductivity and long‑term corrosion resistance.
• Accepts 18‑16 AWG solid or stranded wire and 14 AWG stranded, offering versatile sizing options.
• Operates safely up to 167 °F (75 °C), suitable for high‑heat industrial and automotive environments.
• Supported by 3M technical assistance and warranty, delivering reliable after‑sales service.

FAQ

Can this connector be used with stranded wire?

Yes, the connector is designed to accommodate both solid and stranded conductors. It accepts 18‑16 AWG solid or stranded wire as well as 14 AWG stranded wire, allowing flexibility for a variety of wiring projects.

What temperature range does the connector support?

The connector is rated for continuous operation up to 167 °F (75 °C). This rating covers most industrial, automotive, and marine applications where elevated temperatures are encountered.

Is the connector suitable for outdoor installations?

While the polypropylene housing offers good resistance to UV exposure and moisture, the connector is primarily intended for indoor or protected environments. For fully exposed outdoor use, additional sealing measures should be employed.

How does the tin plating improve performance?

Tin plating on the brass element provides a smooth, non‑oxidizing surface that enhances electrical conductivity and protects the metal from corrosion, especially in humid or salty conditions.

What support does 3M provide after purchase?

3M offers technical documentation, wiring diagrams, and a dedicated support line staffed by engineers. Customers also benefit from a standard warranty that covers material defects, ensuring peace of mind for long‑term installations.