Catalog

1
IEC Squirrel-Cage Motors
Introduction
General technical data
Standard connection boxes in EEx de type of protection for explosion-proof motors 1MJ6, 1MJ7, 1MJ8 and 1MJ1
Frame size Connection box Number of terminals Contact screw thread Max. connectable Sealing range Cable entry 1)
cross-section
Type mm 2 mm Size
1MJ6, 1MJ7
71 gk 330 6 M4 4 9 ... 17 Standard: 1 x M25x1.5
80
90 gk 420 6 M4 6 9 ... 17
With 1MJ motors, unused drilled holes must be sealed in accordance
with EN 50014.
Version with explosion-proof connection box is available, with
the exception of frame sizes 180 and 200.
Connection boxes in cast iron version (Order code K15) for motors 1LG4, 1LG6 and 1MA6, 1MJ6, 1MJ7 explosion-proof
motors
Possible positions of the connection boxes in cast iron version (Order code K15) for 1LG4, 1LG6 motors and
1MA6, 1MJ6, 1MJ7 explosion-proof motors
Version with PTC thermistor:
1 x M25x1.5
1 x M16x1.5
100 11 ... 21 Standard: 1 x M32x1.5
112 gk 420 6 M4 6 11 ... 21
Version with PTC thermistor:
1 x M32x1.5
132
1 x M16x1.5
160 M gk 420 6 M4 6 19 ... 28 Standard: M40 x 1.5
160 L gk 465 6 M5 16
Version with PTC thermistor:
1 x M40x1.5
1 x M16x1.5
180 1XC1 270 6 M6 25 19 ... 28 M40x1.5
200 1XC1 380 6 M8 50 26 ... 35 M50x1.5
225
250 1XC1 480 6 M10 120 34 ... 42 M63x1.5
280
315 1XC1 580 6 M12 240 38 ... 45 M63x1.5
1MJ8
355 No designation 6 M16 120 ... 300 35 ... 75 3) M63x1.5 2)
1MJ1
315 No designation 6 M16 95 ... 300 35 ... 75 M63x1.5
355 No designation 6 M16 35 ... 300 35 ... 75 M63x1.5
400 No designation 6 M16 35 ... 300 35 ... 75 M63x1.5
450 No designation 6 M20 70 ... 300 35 ... 75 M75x1.5
Motors Frame size Number of cable entries Connection box material Feeder connection
1MJ6 71 ... 160 M 2 holes incl. 1 certified cable gland Cast iron
Without cable lug 3) or with cable
180 ... 200
with sealing washer and
lug
1 certified plug
1LG4,
1LG6,
1MA6,
1MJ7
180 ... 225 2 holes incl. 2 certified cable glands
with sealing washer and
1 certified plug
Cast iron
Motors Frame size Connection box position Rotation of connection box
Above Side, right or left Retrofitting
possible
90° 4) 180° 4) Retrofitting
possible
1MJ6 71 ... 80 † – – † † Yes
90 ... 160 M † † – † † Yes
180 ... 200 † † – † † Yes
1LG4,
180 ... 225 † † – † † Yes
1LG6,
1MA6,
1MJ7
† Available version
1)
2)
3)
4)
Designed for cable glands with O-ring.
Standard version with cable entry glands split lengthwise for 35 to 75 mm
and strain relief.
The components required for connection without cable lugs are supplied
with 1MJ7 motors of frame size 225 M and above as an accessory pack in
the connection box.
The position of the cable entry must be specified when ordering.
1/46 Siemens D 81.1 · 2006