57
The MTL5991 provides a convenient source of power for DIN-rail mounted units in locations 
where a dc supply is not readily available.  The wide input power supply range makes this 
unit universally applicable and the 2A output capability at 24V dc is sufficient to drive a useful 
number of MTL5500 modules - see table below. See also the MPA5500, in Section 4.2 of this 
manual, for powering individual modules.
Terminal Function
1 AC line
2 Earth
3 AC neutral
4 +24V
5 +24V
6 0V
7 0V
8 Do not use
Safe area
MTL5500 
unit
Current Drawn 
mA (Vs=24V)
Max. number
of units
MTL5501-SR 90 
22
MTL5510 40
50
MTL5510B 40
50
MTL5511 25
80
MTL5513 30
66
MTL5514(-T)/D 25
80
MTL5516C 35
57
MTL5517 35
57
MTL5521(-T) 90
22
MTL5522 125
16
MTL5523V/VL 100
20
MTL5524 100
20
MTL5525 100
20
MTL5526 44
45
MTL5531 96
20
MTL5532 65
30
MTL5533 130
15
MTL5541/S(-T) 51
39
MTL5541A/AS 45
44
MTL5544/D/S 96
20
MTL5544A/AS 70
28
MTL5546/Y(-T) 35
57
MTL5549/Y 70
28
MTL5573/75 50
40
MTL5576 60
33
MTL5581 30
66
MTL5582/82B 33
60