
H Series 50 Watt AC-DC Converters
Input voltage range 85...255 V AC 
1, 2 or 3 isolated outputs up to 48 V DC 
4 kV AC I/O electric strength test voltage
LGA
• Rugged electrical and mechanical design
• Output 1 regulated, outputs 2 and 3 tracking
• Operating ambient temperature range 
–10...50 °C with convection cooling
Selection chart
Output 1 Output 2 Output 3 Rated power Type Options
U
o nomIo nom
[V DC] [A] [V DC] [A] [V DC] [A] [W] 85...255 V AC
5.1 11 - - - - 56 LH 1001-2R D, V 
12 6 - - - - 72 LH 1301-2R D 
15  4.5 - - - - 67 LH 1501-2R D 
24 3 - - - - 72 LH 1601-2R D 
48 1.5 - - - - 72 LH 1901-2R D
12  2 12 2 - - 48 LH 2320-2 D 
15 1.7 15 1.7 - - 51 LH 2540-2 D
5.1 5 12 0.7 12 0.7 42 LH 3020-2 D, V
5.1 5 15 0.6 15 0.6 43 LH 3040-2 D, V
U
o nomIo nom
U
o nomIo nom
P
o tot
Input voltage
Input
Input voltage continuous range 85...255 V AC 
Input frequency 47...63 Hz 
Inrush current limitation by thermistor
Output
Efficiency
Output voltage 1 setting acc. 
Output voltage 2, 3 setting acc. 
Output voltage switching noise IEC/EN 61204, total typ. 200 mV 
Line regulation 
Load regulation output 1 
Load regulation output 2, 3 10...100% 
Output voltage 2, 3 
Cross load regulation outp. 2, 3 0...100% 
Minimum output current not required 0 A 
Current limitation main output rectangular U/I characteristic typ. 110% 
Current limitation aux. output(s) rectangular U/I characteristic typ. 120% 
Operation in parallel by current limitation 
Hold-up time
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Edition 4/04.2001
U
, 
I
i nom
o nom
U
, 
I
i nom
o nom
U
, 
I
i nom
o nom
U
...
U
i min
U 
U
U
i max
, 0...
i nom
, 
I
i nom
o1 nom
 = 230 V AC, 
i 
, 
I
o1 nom
I
o2,3 nom
I
o1 nom
I
o nom
, 
I
 = 0 max. 115% 
o2,3
I
o nom
up to 83 %
±2% 
±5% 
typ. ±1% 
typ. 0.2 % 
typ. 0.7 V 
typ. 0.7 V
typ. 70 ms
U
o1 nom
U
o2,3 nom
U
U
o1 nom
U
o2,3 nom
o nom
I
o nom
I
o nom
1
pp

Cassette Style H Series
Protection
Input undervoltage lockout typ. 60 V AC 
Input overvoltage lockout typ. 280 V AC 
Input transient protection varistor 
Output no-load, overload and short circuit proof 
Output overvoltage suppressor diode in each output typ. 150% 
Overtemperature switch-off with auto restart
T
Control
Output voltage adjustment single output types 0...110% 
Inhibit TTL input, output(s) disabled if left open-circuit 
Status indication LEDs: OK, inhibit
Safety
Approvals EN 60950, UL 1950, CSA C22.2 No. 950 
Class of equipment class I 
Protection degree units without options IP 40 
Electric strength test voltage I/case 2 kV AC
I/O 4 kV AC 
O/case 1 kV AC 
O/O 0.2 kV AC
EMC
Electrostatic discharge IEC/EN 61000-4-2, contact discharge, level 2 (4 kV) criterion A 
Electromagnetic field IEC/EN 61000-4-3, level x (20 V/m) criterion A 
Electr. fast transients/bursts IEC/EN 61000-4-4, input, level 1 (0.5 kV) criterion A 
Surge IEC/EN 61000-4-5, input, level 1 (0.5 kV) criterion A 
Electromagnetic emissions CISPR 22/EN 55022, conducted class A
CISPR 22/EN 55022, radiated class B
U
o nom
 typ. 100°C
C
U
o1 nom
Environmental
Operating ambient temperature 
Operating case temperature 
Storage temperature non operational –25...100°C 
Damp heat IEC/EN 60068-2-3, 93 %, 40 °C 21 days 
Vibration, sinusoidal IEC/EN 60068-2-6, 10…60/60…150 Hz 0.15 mm/2 g 
Shock IEC/EN 60068-2-27, 6 ms 15 g 
Bump IEC/EN 60068-2-29, 16 ms 10 g 
MTBF MIL-HDBK-217E, GB, 40 °C, single output types 384'000 h
TCU
U
i nom 
i nom
, 
I
, convection cooled –10...50°C
o nom
, 
I
o nom
–10...80°C
Options
Input and/or output undervoltage monitoring, excludes option V D1…D8 
Input and/or output undervoltage monitoring (VME), excludes option D V2, V3
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Edition 4/04.2001
2
n 
n 
n

H Series 50 Watt AC-DC Converters
Mechanical data
Tolerances ±0.3 mm (0.012") unless otherwise indicated.
2
6TE
2TE
5
11 141720
8
23
26
29
32
S09050
European 
Projection
20 (0.79")
127 (5")
168.5 (6.63")
22 (0.87")
103
111.2 (3U) (4.38")
M 3; depth = 4 mm 
(chassis mount)
Measuring point for 
case temperature 
173.7 (6.84")
68
T
C 
38.7 (1.52")
Inhibit i
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Edition 4/04.2001
OK
Potentiometer 
(option D or V)
3

Cassette Style H Series
Pin allocation
Pin Electrical Determination LH1000 LH2000 LH3000
2 Inhibit control input i i i 
5 Safe Data or ACFAIL D or V D or V D or V
8 Output voltage (positive) Vo1+ Vo3+
11 Output voltage (negative) Vo1– Vo3– 
14 Control input + R
17 Control input – G 
14 Output voltage (positive) Vo2+ Vo2+
17 Output voltage (negative) Vo2– Vo2– 
20 Output voltage (positive) Vo1+ Vo1+ Vo1+
23 Output voltage (negative) Vo1– Vo1– Vo1– 
26 Protective earth
29 AC input voltage N  N N 
32 AC input voltage P  P  P 
Accessories
Front panels 19" (Schroff/Intermas) 
Mating H11 connectors with screw, solder, fast-on or press-fit terminals 
Connector retention facilities and code key system for connector coding 
Flexible PCB for connecting the converter via an H11 connector, if mounted on a PCB 
Chassis or wall mounting plates for frontal access 
Universal mounting brackets for chassis or DIN-rail mounting
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Edition 4/04.2001
2/12.2000
4