Product News: Electrical Equipment & Systems

Explosion Proof LED Light features manhole mounted design.

Press Release Summary:

Aug 21, 2014 - Measuring 16 in. in diameter, Model MMLP-1MLED-B-24OD-12P is attached to 24 in. supporting plate which allows fixture to hang inside tank or railcar while supporting plate rests on lip of man-way opening. Fixture operates with 100-277 Vac and provides 10,000 lm of light while drawing 150 W. Constructed with copper-free aluminum alloy body that is powder coated for durability, light is Class 1 Division 1, Group B approved for use in environments where hydrogen is always present.

Original Press Release

Larson Electronics Releases a Temporary Manhole Mounted Explosion Proof LED Light Fixture for Applications Requiring Group B Approvals

Press release date: Aug 15, 2014

Explosion proof lighting specialists Larson Electronics have announced the release of a Group B approved temporary manhole mount LED light fixture that provides operators with a powerful and highly convenient alternative to traditional string or tank lights. This Class 1 Division 1 & 2 explosion proof light fixture provides 10,000 lumens of high quality light while drawing only 150 watts.

An innovative 24” man-way support bracket combined with a compact design and LED technology make this lamp an excellent lighting solution for operators working within storage tanks, railcars, and other locations where entry is through a 24” manhole opening. The MMLP-1MLED-B-24OD-12P from Larson Electronics is Class 1 Division 1, Group B approved for use in environments where hydrogen is always present. The copper free aluminum alloy body is powder coated for added durability and an attractive aesthetic appearance. A special heat dissipating design in conjunction with advanced LED technology helps this fixture achieve an excellent 60,000 hour rated lifespan with 80% lumen retention.

This 16 inch diameter LED light is attached to a 24 inch supporting plate which allows the light fixture to hang inside the tank or railcar while the supporting plate rests on the lip of a man-way opening. This mounting system provides an extremely versatile lighting option for those working in confined spaces such as rail cars, storage tanks, ship tanks and the like where entry is through a 24” man-way opening. The light is suspended 12 inches from the lip to lower the light source into the tank. This light is multi-voltage capable and can be operated with 100-277 volts AC without any need for a special ballast. The MMLP-1MLED-B-12P offers excellent convenience and effectiveness with a 24” manhole mounting support bracket that eliminates the need for special mounting fixture or cumbersome string light sets. 

“This manhole mounted explosion proof LED fixture is for those applications where hydrogen is always present in the work area,” said Rob Bresnahan with “This lamp produces 10,000 lumens with a color temperature of 6,000K and a color rendering index of 70, which produces colors and details much more accurately than high pressure sodium luminaires.” 

Larson Electronics produces an extensive line of LED light tower, portable distributions, explosion proof lights for hazardous locations, portable work lights and industrial grade LED area lights. You can view Larson Electronics’ entire line of lighting by visiting them on the web at You can also call 1-800-369-6671 to learn more or call 1-214-616-6180 for international inquiries.