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BCD20021-G Rev AF, 29 November 2021
Page 2 of 26
X Series
375, 500 Watt AC-DC and DC-DC DIN-Rail Converters
© 2021 Bel Power Solutions & Protection
Description
The Convert Select front end series represents a family of DIN-rail mountable DC-DC and AC-DC converters with power factor
correction. The converters have been designed according to the latest industry requirements and standards. They are ideal
for use in outdoor and other demanding applications to power building control systems, factory automation, industrial controls,
instrumentation, electro magnetic drives, fans, and other DC loads. Different models are available with a single output or two
independently regulated, electrically isolated outputs with 24, 36, or 48 V. Special models for battery charging are available.
Key features of the Convert Select line include power factor correction with low harmonic distortion, negligibly low inrush current,
high immunity to transients and surges, and low electromagnetic emissions. Internal protection circuits such as input over- and
undervoltage lockout, thermal protection, as well as output overvoltage protection by a second control loop ensure safe operation
of the final system.
The outputs deliver an electrically-isolated Electrical energy source class 1 (ES1), (except models LXR/LXN1740) and low output
noise. They are no-load, overload, and short-circuit proof. The electronically controlled short-term peak power capability of up to
150% of the rated output power enables the front end con verters to deliver additional power to start-up motors or to safely operate
subsequent circuit breakers. Built-in large siz ed output capacitors absorb possible reverse energy, which may be caused by quick
deceleration of electromagnetic drives connected directly to the output. A green LED at the front cover displays the status of the
output(s).
The Convert Select Series was designed according to all relevant international safety standards. Adequate clear ances and
creepage distances allow operation in pollution degree 2 environment. All board assemblies are coated with a protective lacquer.
The thermal concept allows operation at full load up to an ambient temperature of 60 °C in free air without forced cooling. A rugged
DIN snap-fit device allows easy and reliable fixing onto the various 35 mm DIN-rail models. The converters are fitted with cage
clamp terminals easily accessible from the front. System connectors with screw terminals for use with pre-assembled harnesses,
external adjustment of the output voltage, as well as various auxiliary functions are available as options.
Model Selection
Table 1: Standard models
Output 1
Output 2
Output
Power
Operating Input
Voltage
Type
Designation
Efficiency
Options
3, 5
V
o1 nom
[VDC]
I
o1 nom
[A]
V
o2 nom
1
[VDC]
I
o2 nom
[A]
P
o nom
[W]
V
i min
–
V
i max
η
min
7
[%]
24.7
15
-
-
371
85
2
– 264 VAC,
47 – 63 Hz
4
,
90
2
– 350 VDC
6
LXR1601-6G
87
R
D1, D2, D5
M1, M2
F, K2
non-G
24.7
20
-
-
494
LXN1601-6G
87
37.05
10
-
-
371
LXR1701-6G
3
88
37.05
13.4
-
-
497
LXN1701-6G
3
88
49.4
7.5
-
-
371
LXR1801-6G
88
49.4
10
-
-
494
LXN1801-6G
88
24.7
10
24.7
10
494
LXN2660-6G
87
37.05
6.7
37.05
6.7
497
LXN2770-6G
3
88
49.4
5
49.4
5
494
LXN2880-6G
88
1
R-input not connected.
2
For derating at low input voltage see section
Output Power Derating.
3
For minimum quantity and lead times contact Bel Power Solutions.
4
The converters have been tested up to 440 Hz; for operating frequencies <47 Hz or >63 Hz contact Bel Power Solutions.
5
On double-output models the options R, M2, D1, D2, D5 are related to the 2
nd
output only.
6
V
i
≤
250 VDC for models with option F
7
Min. efficiency at
V
i nom
,
I
o nom
, and
T
A
= 25 °C. Typical values are approx. 2% better.
Not for new designs (NFND) or End of Life (EOL).
Table 2: Battery charger models (M1 included)
