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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, electromagnetic drives, fans, and other DC loads. Dierent 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
ofthenalsystem.
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%oftheratedoutputpowerenablesthefrontendconverterstodeliveradditionalpowertostart-upmotorsortosafelyoperate
subsequent circuit breakers. Built-in large sized 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 clearances 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
DINsnap-tdeviceallowseasyandreliablexingontothevarious35mmDIN-railmodels.Theconvertersarettedwithcage
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 Eciency Options3, 5
Vo1 nom
[VDC]
Io1 nom
[A]
Vo2 nom
1
[VDC]
Io2 nom
[A]
Po nom
[W] Vi min – Vi max
ηmin
7
[%]
24.7 15 - - 371
8 5 2– 264 VAC,
47 – 63 Hz 4,
90 2– 350 VDC6
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 388
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 388
49.4 5 49.4 5 494 LXN2880-6G 88
1 R-input not connected.
2For derating at low input voltage see section Output Power Derating.
3For minimum quantity and lead times contact Bel Power Solutions.
4 Theconvertershavebeentestedupto440Hz;foroperatingfrequencies<47Hzor>63HzcontactBelPowerSolutions.
5On double-output models the options R, M2, D1, D2, D5 are related to the 2nd output only.
6Vi≤250 VDC for models with option F
7 Min.eciencyatVi nom, Io nom, and TA=25°C.Typicalvaluesareapprox.2%better.
Not for new designs (NFND) or End of Life (EOL).
Table 2: Battery charger models (M1 included)
