For Non-Linear Loads (200% Rated Neutral)

Main Lug Interiors—Accepts plug-on and bolt-on circuit breakers

Max. No. of Single Pole QO/QOB Circuit Breakers	Mains Rating	Main Lugs Interior Only (Order Branch Circuit Breakers Separately)	Type 1 Enclosure		Types 3R, 5, 12 Enclosures ^[1]
			Box 20"W x 5.75"D ^[2]	MONO-FLAT^® Front ^[3]	Enclosure 20"W x 6.5"D	Height (In.)
		Catalog No. ^[4]	Catalog No.	Catalog No.	Catalog No.	Height (In.)
20" Wide Cabinet—3 Phase 4-Wire
30	100	NQOD430L100CUNL	MH29	MHC29 ( )	MH29WP	29
42	225	NQOD442L225CUNL	MH38	MHC38 ( )	MH38WP	38
42	400	NQOD442L400CUNL	MH53	MHC53V ( )	MH53WP	53

Max. No. of Single Pole QO/QOB Circuit Breakers	Mains Rating	Main Circuit Breaker Adapter Kit ^[5]	Main Lugs Interior Only (Order Branch Circuit Breakers Separately)	Type 1 Enclosure		Types 3R, 5, 12 Enclosures ^[1]
		Main Circuit Breaker Adapter Kit ^[5]		Box 20"W x 5.75"D	MONO-FLAT Front ^[3]	Enclosure 20"W x 6.5"D	Height (In.)
		Catalog No.	Catalog No. ^[4]	Catalog No.	Catalog No.	Catalog No.	Height (In.)
20" Wide Cabinet—3 Phase 4-Wire
30	100	QOB Main Circuit Breaker	NQOD430M100CUNL	MH32	MHC32 ( )	MH32WP	32
42	225	NQODJK NQODQB	NQOD442L225CUNL	MH50	MHC50 ( )	MH50WP	50
42	400	NQOD4	NQOD442L400CUNL	MH68	MHC68V ( )	MH68WP	68

Panelboard Ampacity	Neutral Conductors Required^[6]	Actual Lug Wire Range
100/125	(2) 1/0 Cu or Al	(2) #4–300 kcmil
225	(2) 4/0 Cu or (2) 300 kcmil Al	(2) #4–300 kcmil
400	(4) 3/0 Cu or (4) 250 kcmil Al (2) 600 kcmil Cu (2) 750 kcmil Al	(2) 1/0–300 kcmil or (1) 750 kcmil

Panelboard Ampacity

Neutral Conductors Required^[6]

Actual Lug Wire Range

100/125

(2) 1/0 Cu or Al

(2) #4–300 kcmil

225

(2) 4/0 Cu or (2) 300 kcmil Al

(2) #4–300 kcmil

400

(4) 3/0 Cu or

(4) 250 kcmil Al

(2) 600 kcmil Cu

(2) 750 kcmil Al

(2) 1/0–300 kcmil or
(1) 750 kcmil

Class 1630