Main Lug Interiors

Accepts bolt-on branch circuit breakers

Top or bottom feed

65,000 A Short Circuit Current Rating (SCCR) maximum branch circuit breakers at 480Y/277 Vac.

100,000 A Short Circuit Current Rating maximum branch circuit breakers at 240 Vac.

25,000 A SCCR maximum branch circuit breakers at 600Y/347 Vac.

Series rated to 200,000 A SCCR maximum when supplied by PowerPacT™ circuit breaker or remote Class J or T Fuse.

125 and 250 A interiors are suitable for use as cULus service entrance with back-fed EDB, EGB, or EJB circuit breakers.

Factory-installed main lugs on all interiors

125–600 A main lug interiors are convertible to main circuit breaker interiors by adding a main circuit breaker adapter kit and a main circuit breaker.

125 A, 250 A, 400 A, 600 A and 800 A interiors may be suitable for cULus service entrance with vertical main breakers and applicable service entrance barriers.

800 A interiors are fully assembled into a 8.75 in. (222 mm) deep NEMA Type 1, 3R, 5, or 12 enclosure.

Several bus options:

• Silver/Tin-plated copper or tin-plated aluminum bus (aluminum is standard)

• Tin-plated copper bus and silver-plated copper bus are also available

• 600 and 800 A only available with copper

Branch connector fingers are tin-plated copper:

• Silver-plated branch connector fingers are optional

Line lugs are suitable for 75⁰C copper or aluminum wire