Comparison : Item # M3DHVS250T3, UL489 MCS M3DHVS 3P 250A Busbar connection
Item # M3DHVS400T3, UL489 MCS M3DHVS 3P 400A Busbar connection
Item # M3DHVS250T3L, UL489 MCS M3DHVS 3P 250A with Lug Terminals
Item # M3DHVS400T3L, UL489 MCS M3DHVS 3P 400A with Lug Terminals
Item # M3DHVN250T3, UL489 MCS M3DHVN 3P 250A Busbar connection