Product Overview

UL Certified MC4 Connector is listed by Underwriters Laboratories for use in photovoltaic systems installed in the United States and Canada. In the North American solar market, UL listing is not optional - it is the certification that AHJs (Authorities Having Jurisdiction) look for during permit review and field inspection. A connector without UL listing can delay or block project approval in most U.S. jurisdictions.

UL listing for PV connectors involves rigorous testing to UL 6703 (the North American standard for PV connectors and cable assemblies), factory audits, and ongoing surveillance. The UL mark on the connector tells inspectors, installers, and project owners that the product meets the safety requirements recognized by the National Electrical Code.

Specifications

Parameter	Specification
Connector Type	MC4 inline solar connector
Rated Voltage	600V/1000V/2000V DC
Rated Current	30A-50A
Contact Material	Copper alloy, tin or silver plated
Housing Material	UV-resistant engineering polymer
Protection Rating	IP67
Temperature Rating	90°C/105°C (model dependent)
Wire Compatibility	8–14 AWG
Listing	UL 6703
NEC Compliance	Article 690
Locking	Snap-lock, tool-release

Core Uses

UL Certified MC4 Connectors serve the same connection function as any MC4 connector, with the added compliance layer that the North American market requires:

String wiring and module interconnection in NEC-governed installations
Home run and extension cable termination for permitted PV systems
Combiner box and inverter input connections in UL-listed assemblies
Pre-assembled cable harnesses for the U.S. and Canadian market

Application Scenarios

U.S. Residential and Commercial Solar

Every grid-tied solar installation in the United States goes through a permitting and inspection process. Inspectors verify that components carry appropriate listings. UL-certified MC4 connectors pass this check without question, keeping the project on schedule and avoiding the costly delays that come with component rejection at inspection.

Canadian Solar Installations

Canada follows similar certification requirements through CSA standards, and UL listing is widely recognized by Canadian AHJs. UL-certified connectors support smooth permitting in both countries, making them the standard choice for manufacturers and distributors serving the combined North American market.

Utility-Scale Projects with U.S. Interconnection

Large solar projects connecting to U.S. utility grids must meet NEC requirements and often face additional scrutiny from utility interconnection engineers. UL-listed connectors satisfy these requirements and support the documentation package needed for utility approval and insurance.

Selection Guide

UL Certified MC4 Connector is the required choice for any PV installation in the United States or Canada where NEC compliance and AHJ approval are needed. This includes virtually all grid-tied residential, commercial, and utility-scale projects in North America.

For projects outside North America, particularly in Europe, Middle East, and Asia-Pacific TUV certification is typically the relevant standard. Some projects require both UL and TUV certification; dual-certified models are available.

UL vs TUV: Which Certification Do You Need?

	UL Certified	TUV Certified
Standard	UL 6703	IEC 62852
Primary Market	United States, Canada	Europe, Asia-Pacific, Middle East, Africa, Latin America
Required By	NEC/HJ inspection	Local regulations, project finance, EPC specifications
Testing Scope	Safety-focused (fire, shock, mechanical)	Performance and safety (IEC comprehensive)
Factory Audit	UL follow-up inspection program	TUV surveillance audit program