Amphenol's Helios H4 Connector Ranked Highest in Independent Test Comparison

Field-assembled and pre-assembled units ranked first and second, respectively

Sep 23, 2011, 12:47 ET from Amphenol Industrial Operations

SIDNEY, N.Y., Sept. 23, 2011 /PRNewswire/ -- Amphenol Industrial, a global leader in interconnect systems, has announced that its Helios H4 connector has achieved the two top ranked positions in an independent annual test comparison of solar connectors performed by Photon, The Solar Power Magazine.

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Beating out 26 competing connectors, the Helios H4 performed exceptionally well in a series of tests including contact resistance, separation force and high voltage withstand. The tests were carried out before and after exposing the connectors to accelerated aging in an environmental test chamber. The Helios H4 was the only connector that consistently showed a very low contact resistance of less than one milli-Ohm.  

Photon annually tests and compares the most important photovoltaic connectors in their own test lab, using real-world test criteria. The Photon test is the largest and best known comparison of PV connectors in the industry.

Amphenol's H4 connectors received ratings of 1.7 for the field-assembled unit and 1.9 for the factory-assembled connector, based on a scale of 1 to 6, with 1 being the best and 6 failing.  

Amphenol's Helios H4 is a dual-rated (UL/TUV) PV connector that meets NEC 2008 without the need for extra locking collars and locking sleeves.  This cost-effective interconnection uses Amphenol's RADSOK technology to achieve higher current ratings and lower contact resistance, resulting in lower power losses.

The Helios H4, used to connect solar panels and inverters, mates with industry standard connectors. This RoHS-compliant connector uses a simple unlocking tool for easy unmating in the field, and is TUV, UL and CSA approved.  

Helios H4 connectors are available through Amphenol's solar distribution network. For high volume inquiries contact Amphenol's customer service at 1-888-364-9011 or

For more information, please visit or e-mail

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UPCOMING TRADESHOW:  SolarPower International 2011, Dallas, TX, 10/17-20

READER SERVICE INQUIRIES: Please forward all reader service inquiries to Gerry Sui at Amphenol Industrial Operations, Amphenol Corporation, 40-60 Delaware Ave, Sidney, N.Y., 13838-1395; e-mail:; Web:  

Editor's Note:  Amphenol Industrial Operations, headquartered in a 675,000 square foot facility in Sidney, N.Y., provides a full range of high reliability connectors and interconnection systems specifically for the industrial markets including base stations, rail/mass transit, process control, automotive manufacturing, heavy equipment, and petrochemical/power generation.  

Products include ruggedized-for-industry cylindrical, fiber optic, rectangular, and industrialized versions of Amphenol's MIL-C-5015 cylindrical, MIL-C-26482 miniature cylindrical and GT reverse bayonet cylindrical connectors. It employs more than 1,400 people and is both ISO9001 and MIL-STD-790 certified.  

Amphenol Industrial Operations is a division of Amphenol Corporation, Wallingford, CT, one of the largest manufacturers of interconnect products in the world, with year 2010 sales topping $3.6 billion.

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SOURCE Amphenol Industrial Operations