User`s manual

Base unit specifications Specifications
MELSEC System Q, Hardware 12 – 61
12.5 Base unit specifications
Slim type main base units Q32SB, Q33SB, Q35SB
Main base units Q33B-E, Q35B-E, Q38B-E, Q38RB-E, Q312B-E
Main base units Q38DB and Q312DB
Item Q32SB Q33SB Q35SB
Slots for power supply modules 1 1 1
Slots for I/O modules 2 3 5
Installation Installation holes
∅ 4. 5 mm, M4 screws
Use special adapters, when mounting the base unit on a DIN rail.
Internal current consumption
(5 V DC)
90 mA 90 mA 100 mA
External dimensions (HxWxD) mm 98x114x18.5 98x142x18.5 98x197.5x18.5
Weight kg 0.12 0.15 0.21
Accessories DIN rail mounting adapter Q6DIN3
Tab. 12-71: Slim type main base units Q3SB
Item Q33B-E Q35B-E Q38B-E Q38RB-E Q312B-E
Slots for power supply modules 1 1 1 2 1
Slots for I/O modules 3 5 8 8 12
Installation Installation holes
∅ 4, 5 mm, M4 screws
Use special adapters, when mounting the base unit on a DIN rail.
Internal current consumption (5 V DC) 110 mA 110 mA 120 mA 120 mA 130 mA
External dimensions (HxWxD) mm 98x189x44.1 98x245x44.1 98x328x44.1 98x439x44.1 98x439x44.1
Weight kg 0.21 0.25 0.35 0.45 0.45
Accessories DIN rail mounting adapter
Tab. 12-72: Main base units Q3B-E and Q3RB-E
Item Q38DB Q312DB
Slots for power supply modules 1 1
Slots for I/O modules 8 12
Installation Installation holes
∅ 4, 5 mm, M4 screws
Use special adapters, when mounting the base unit on a DIN rail.
Internal current consumption
(5 V DC)
230 mA 240 mA
External dimensions (HxWxD) mm 98x328x44.1 98x439x44.1
Weight kg 0.41 0.54
Accessories DIN rail mounting adapter Q6DIN1
Tab. 12-73: Main base unit Q3DB