ABC401-1012-UC [BEL]

Universal input voltage range (90 – 264 VAC);
ABC401-1012-UC
型号: ABC401-1012-UC
厂家: BEL FUSE INC.    BEL FUSE INC.
描述:

Universal input voltage range (90 – 264 VAC)

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The ABC401 Series of AC-DCpower supplies providesup to 400 W  
of regulated output power throughwide inputvoltage range 90264  
VAC in single outputs of 12, 24, 28, 36 or 48 VDC.  
The ABC401 Series comes in five different low-profile packages,  
offering 12 and 5 VSB standby outputs and a full set of protection  
features. Available control signals include Power Good (P_OK),  
Remote On/Off (PS_ON)and remote sense compensationonthe (+)  
load line.  
The ABC401 Series complies with the latest international safety  
standards for IT equipment and displays the CE-Mark for the  
European Low Voltage Directive (LVD).  
Universal input voltage range (90 264 VAC)  
Active PFC, EN 61000-3-2 Class C, D compliant  
Steady 400 W output power (440 W peak)  
High efficiency (94% typical)  
Low stand by power consumption (<0.5 W)  
12, 24, 28, 36, 48 VDC standard output voltages  
+5V stand by, 2 A and 12 V auxiliary, 1 A outputs  
Low earth/touch leakage currents (<300/100 µA)  
Fan speed control function (Off at <50 W)  
Over temperature protection  
Input under voltage, output over voltage protections  
Over current and short circuit protection  
Remote On/Off and power good signal  
5 available packages all fit 1U installation  
IEC/EN/UL 60950-1 and 62368-1 compliance  
EN55032, FCC Class B, conducted radiated emissions.  
EN55024 immunity  
4000 m operation without de-rating  
RoHS 3 compliant (Directive EU 2015/863)  
Video Wall Display & Entertainment  
Industrial Process Control  
Telecommunications  
Test & Measurement Equipment  
Industrial Laser applications  
3D Printing and ATM  
2
ABC401 Series  
INPUTVOLTAGE NOM. OUTPUT MAX. OUTPUT MAX. OUTPUT  
MODELNUMBER  
PACKAGE & COOLING  
RANGE  
[VAC]  
VOLTAGE  
[VDC]  
POWER  
[W]  
CURRENT  
[A]  
DIMENSIONS  
Open Frame  
76.0 x 164.2 x 37.7 mm  
(2.99 x 6.46 x 1.48 in)  
84.4 x 166.5 x 40.0 mm  
(3.32 x 6.55 x 1.57 in)  
84.4 x 166.5 x 41.0 mm  
(3.32 x 6.55 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
76.0 x 164.2 x 37.7 mm  
(2.99 x 6.46 x 1.48 in)  
84.4 x 166.5 x 40.0 mm  
(3.32 x 6.55 x 1.57 in)  
84.4 x 166.5 x 41.0 mm  
(3.32 x 6.55 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
84.4 x 166.5 x 40.0 mm  
(3.32 x 6.55 x 1.57 in)  
76.0 x 164.2 x 37.7 mm  
(2.99 x 6.46 x 1.48 in)  
84.4 x 166.5 x 40.0 mm  
(3.32 x 6.55 x 1.57 in)  
84.4 x 166.5 x 41.0 mm  
(3.32 x 6.55 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
76.0 x 164.2 x 37.7 mm  
(2.99 x 6.46 x 1.48 in)  
84.4 x 166.5 x 40.0 mm  
(3.32 x 6.55 x 1.57 in)  
84.4 x 166.5 x 41.0 mm  
(3.32 x 6.55 x 1.61 in)  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
ABC401-1012  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
90 - 264  
12  
12  
12  
12  
12  
24  
24  
24  
24  
24  
28  
36  
36  
36  
36  
36  
48  
48  
48  
48  
48  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
33.3  
33.3  
33.3  
33.3  
33.3  
16.7  
16.7  
16.7  
16.7  
16.7  
14.3  
11.1  
11.1  
11.1  
11.1  
11.1  
8.3  
Convection / Forced Air  
U-Chassis  
Convection / Forced Air  
Perforated Cover  
Convection / Forced Air  
Vented Cover  
Top Fan  
Enclosed  
Front Mounted Fan  
Open Frame  
Convection / Forced Air  
U-Chassis  
Convection / Forced Air  
Perforated Cover  
Convection / Forced Air  
Vented Cover  
Top Fan  
Enclosed  
Front Mounted Fan  
U-Chassis  
Convection / Forced Air  
Open Frame  
Convection / Forced Air  
U-Chassis  
Convection / Forced Air  
Perforated Cover  
Convection / Forced Air  
Vented Cover  
Top Fan  
Enclosed  
Front Mounted Fan  
Open Frame  
Convection / Forced Air  
U-Chassis  
Convection / Forced Air  
Perforated Cover  
Convection / Forced Air  
Vented Cover  
Top Fan  
Enclosed  
Front Mounted Fan  
ABC401-1012-UC  
ABC401-1012-PC  
ABC401-1012-T  
ABC401-1012-S  
ABC401-1024  
ABC401-1024-UC  
ABC401-1024-PC  
ABC401-1024-T  
ABC401-1024-S  
ABC401-1028-UC  
ABC401-1036  
ABC401-1036-UC  
ABC401-1036-PC  
ABC401-1036-T  
ABC401-1036-S  
ABC401-1048  
ABC401-1048-UC  
ABC401-1048-PC  
ABC401-1048-T  
ABC401-1048-S  
8.3  
8.3  
8.3  
84.4 x 183.0 x 41.0 mm  
(3.32 x 7.20 x 1.61 in)  
8.3  
tech.support@psbel.com  
3
ABC401 Series  
PARAMETER  
DESCRIPTION / CONDITION  
MIN  
NOM  
MAX  
UNIT  
AC Input Voltage  
PS starts and operates at 90 VAC at all load conditions  
90  
100-240  
264  
VRMS  
DC Input Voltage  
Input Frequency  
170  
47  
-
270  
440  
VDC  
Hz  
50/60  
RMS at 180 VAC, maximum load, 50 / 60 Hz  
RMS at 90 VAC, maximum load, 50 / 60 Hz  
265 VAC, 25 °C ambient, cold start.  
24, 28, 36, 48 V, no damage  
12 V  
2.5  
5.0  
Input Current  
-
-
A
Inrush Current  
Fusing  
-
-
-
-
-
20  
A
A
2x Time Lag 6.3 A, 250 V on both L and N  
-
-
6.3  
20% rated load  
50 100 % rated load  
20% rated load  
90  
92  
90  
94  
-
-
-
-
-
1
-
-
-
-
1.5  
0.5  
At 115 VAC  
Efficiency  
%
At 230 VAC  
50 100 % rated load  
Power on, 115-230 VRMS, no load  
Stand by, 115-230 VRMS, no load  
Input Power Consumption  
Power Factor  
W
-
-
0.4  
At full rated load, 115 VAC, 60 Hz and 230 VAC, 50 Hz input voltages  
0.95  
-
-
Harmonic Current  
Fluctuations and Flicker  
Complies with EN-61000-3-2 Class C at 230 VAC 50 Hz, load >50 W.  
Complies with EN-61000-3-3 at nominalvoltages and full load.  
Earth Leakage Current  
Normal conditions, 240 VRMS, 60 Hz.  
300  
µA  
North America  
Asia-Pacific  
Europe, Middle East  
+86 755 298 85888  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
4
ABC401 Series  
PARAMETER  
DESCRIPTION / CONDITION  
MIN  
NOM  
MAX  
UNIT  
-
-
-
-
-
12  
24  
28  
36  
48  
-
-
V1 Output Voltage  
0.5% set point accuracy for all voltage variants  
-
-
-
V
All voltages, convection cooled models,  
All voltages, fan cooled + forced air cooled (> 400 LFM) models  
All models, peak power (10 s)  
250  
400  
440  
33.3  
16.7  
14.3  
11.1  
8.3  
V1 Output Power Rating  
W
V1: 12 VDC  
V1: 24 VDC  
V1: 28 VDC  
V1: 36 VDC  
V1: 48 VDC  
V1 Output Current  
A
V1 Voltage Adjustment Range  
-
-
-
-
-
-
-
-
±5  
%V1  
V1 Load: 0 33.3 A (12 V)  
0 16.7 A (24 V)  
0 14.3 A (28 V)  
0 13.9 A (36 V)  
0 8.3 A (48 V)  
V2 Load: 0 1 A  
5VSB Load: 0 2 A  
VAC: 90 264 VRMS  
V1 Load-Line-Cross Regulation  
V1 Line Regulation  
±2  
%V1  
%V1  
VAC: 90 264 VRMS  
25% load changes at 1 A/µs  
12V at 2200 µF Load / IOUT> 0.5 A  
24 V at 1000 µF Load / IOUT> 0.5 A  
28 V at 1000 µF Load / IOUT> 0.5 A  
36 V at 820 µF Load / IOUT> 0.5 A  
48V at 560 µF Load / IOUT> 0.5 A  
±0.1  
±5  
Transient Response  
(Voltage Deviation)  
V1, 5VSB  
%V1  
%5VSB  
5VSB at 560 µF Load / IOUT> 0.1 A  
All models, Peak-to-peak, 20 MHz BW.  
100 nF ceramic and 10 µF tantalum caps at the load.  
V1 Ripple and Noise  
Start-up Rise Time  
-
-
-
1
%V1  
ms  
90<VIN<264, any load conditions.  
5
85  
V1 in regulation after PS_ON is asserted  
V1 in regulation after AC is applied  
5VSB in regulation after AC is applied  
200  
750  
500  
Start-up Delay  
-
-
-
ms  
10  
10  
10  
16  
20  
35  
%V1  
%V2  
%VSB  
Turn-on Overshoot  
At I1 = 500 mA, V1 in regulation within 50 ms.  
-
At nominal VIN, 400 W, for all models  
At nominal VIN, 365 W, for all models  
At nominal VIN, 200 W, for all models  
-
-
-
-
-
-
Hold-up Time  
ms  
A
Minimum Load *  
All models; V1, V2 and 5 VSB  
0
-
-
12 V  
24 V  
28 V  
36 V  
48 V  
-
-
-
-
-
33000  
16000  
14300  
10000  
7000  
-
-
-
-
Maximum Load Capacitance  
At nominal VIN, 25 °C ambient  
µF  
Temperature Drift  
-1.2  
-
+1.2  
mV/°C  
V
Load on V2: from 5 to 1000 mA  
Load on V1: from 0.1 to I1 rated  
V2 Output Voltage (*)  
All models.  
11.35  
11.5  
12.65  
V2 Output Current (I2)  
5VSB Output Voltage  
Convection / forced air cooling  
-
-
-
1
-
A
V
3% set point accuracy  
5
Convection cooled models  
Fan cooled + forced air cooled (> 400 LFM) models  
-
-
-
-
1.5  
2
5VSB Output Current (I5VSB  
)
A
V1 Load: 0 33.3 A (12 V)  
0 16.7 A (24 V)  
0 14.3 A (28 V)  
0 13.9 A (36 V)  
0 8.3 A (48 V)  
5VSB Load-Line-Cross regulation VAC: 90 264 VRMS  
-
-
±5  
%5VSB  
V2 Load: 0 1 A  
5VSB Load: 0 2 A  
tech.support@psbel.com  
5
ABC401 Series  
Figure 1. Power Derating Curves for Open Frame, U-Chassis and Perforated Cover Models  
Figure 2. Power Derating Curves for Top Fan and Front Mounted Fan Models  
Base signals and controls are accessible from signal connector P204.  
SIGNAL DESCRIPTION / CONDITION  
MIN  
0
NOM  
MAX  
2.0  
-
UNIT  
PS_ON  
Active low, +5 V TTL signal compatible. Input low voltage  
Input high voltage (IIN = 200 µA)  
-
-
V
V
3.0  
V1 and V2 disabled when PS_ON is open  
5 VSB not affected by PS_ON  
V1 and V2 enabled with PS_ON connected to RTN  
+5 V TTL compatible  
P_OK  
Logic level low(<10 mA sinking)  
-
2.4  
0.05  
1
-
-
-
-
-
0.7  
5
V
V
Logic level high (100µA sourcing)  
Low to high time after V1 in regulation  
Power down warning time  
0.1  
-
s
ms  
ms  
5VSB output  
Active and in regulation after a 90<VAC<264 is applied  
5 VSB not affected by PS_ON  
-
200  
North America  
Asia-Pacific  
+86 755 298 85888  
Europe, Middle East  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
6
ABC401 Series  
Above waveforms are expected with AC Input ON/OFF:  
Standby on - Main outputs on  
Main output Rise Time  
50 ms T1 250 ms  
5 ms T2 85 ms  
4 ms T10 20 ms  
40 ms T3 100 ms  
T4 1 ms  
5 VSB rise time  
Main outputs On P_OK delay  
Power down warning 1  
Main Output off Standby off2  
Hold-up time (AC off P_OK low)  
AC_ON - Standby turn on time  
T5 1.2 s  
T6 15 ms (115/ 230 VAC)  
T7 500 ms  
Above waveforms are expected with PS_ON Signal ON/OFF state change:  
Main Output Rise Time  
5 ms T2 85 ms  
50 ms T3 100 ms  
Main Outputs on P_OK delay  
Power down warning1  
1 ms T4 5 ms  
T8 1 ms  
PS_ON - Main Output (off) Timing  
PS_ON - Main Output (on) Timin  
T9 200 ms  
1 T4 parameter measurement setupwill assume at least 10% of the maximumload on each output.  
2 T5 parameter measurement setupwill assume at least 50% of the maximumload on main output.  
tech.support@psbel.com  
7
ABC401 Series  
PARAMETER  
DESCRIPTION / CONDITION  
Auto recovery, Hiccup Mode  
MIN  
60  
-
NOM  
MAX  
-
UNIT  
Input Under Voltage Lockout  
Input Fuse  
75  
-
VAC  
A
2x Time Lag 6.3 A, 250 V on L1 and L2  
6.3  
At nominal input voltages.  
V1: Hiccup mode, auto-recovering.  
V2: PTC limiting, auto-recovering.  
5 VSB: Hiccup mode, auto-recovering.  
At nominal input voltages.  
V1: Hiccup mode, auto-recovering.  
V2: PTC limiting, auto-recovering  
5 VSB: Hiccup mode, auto-recovering.  
Over Current  
Short Circuit  
110  
-
-
-
150  
-
%I1MAX  
12 V  
24 V  
28 V  
36 V  
48 V  
5 VSB  
Over Voltage  
110  
-
136  
%VNOM  
Unit shut down and latch off  
Shut down, latch off.  
Over Temperature (on primary stage)  
Over Temperature (on secondary side)  
Isolation Primary-to- Secondary  
Isolation Input-to-PE  
-
-
-
-
-
-
-
Hiccup mode, auto-recovering.  
-
Reinforced  
Basic  
4000  
1500  
100  
1500  
VAC  
VAC  
VDC  
VAC  
Isolation V1-to-V2  
-
-
-
-
Isolation Output-to-PE  
Basic  
PARAMETER  
DESCRIPTION / CONDITION  
No de-rating up to 50 °C  
PS starts up at -30 °C  
MIN  
NOM  
MAX  
UNIT  
Operating Temperature Range  
-20  
-
50  
°C  
Natural convection cooling: Linearly de-ratefrom 250 W at 50 °C, to  
100 W at 70 °C  
De-rated Operating  
Temperature Range  
Forced air cooling: Linearly de-rate from 400 W at 50 °C, to 280 W at  
-
-
70  
85  
°C  
°C  
70 °C.  
See graphs below.  
Storage Temperature Range  
Humidity  
-40  
-
-
-
RH, Non-condensing Operating  
Non-operating  
90  
95  
%
%
-
-
Operating Altitude  
4000  
m
EN 60068-2-27  
Shock  
Operating:  
Non-Operating: Half sine, 50 g, 11 ms, 3 axes, 6x each (3 positiveand 3 negative).  
EN 60068-2-64  
Operating:  
Half sine, 30 g, 18 ms, 3 axes, 6x each (3 positive and 3 negative).  
Sine,10 500 Hz, 1 g, 3 axes, 1 oct/min., 60 min.  
Vibration  
Random, 5 500 Hz, 0.02 g2/Hz, 1 gRMS, 3 axes, 30 min.  
Non-Operating: 5 500 Hz, 2.46 gRMS (0.0122 g2/Hz), 3 axes, 30 min.  
Full Load, 120 VAC, 40 °C ambient  
80% Duty cycle, Telcordia SR-332 Issue 2  
MTBF  
400000  
-
-
-
Hours  
Years  
Useful Life  
Low line range, 200 W, 40 °C ambient, naturalconvention.  
-
4
The output power de-rating curves are hereinprovided. These curves can be used as a guideline to assess the  
limit in performance of a power supply once installed in a system providing controlled air flowat a certain input  
voltage and ambient temperature.  
Thermal Considerations  
North America  
Asia-Pacific  
Europe, Middle East  
+86 755 298 85888  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
8
ABC401 Series  
PERFORMANCE  
CLASS  
PARAMETER  
DESCRIPTION / CONDITION  
STANDARD  
115 VRMS, 230 VRMS. Maximum load  
4 dB minimum margin  
Conducted  
Radiated  
EN 55032 (ITE)  
EN 55032 (ITE)  
EN 61000-3-3  
B
B
At 10 m distance  
Line Voltage Fluctuationand  
Flicker  
At 20%, 50% and 100% maximum load  
Nominal input voltages  
Nominal input voltages  
Harmonic Current Emission  
EN 61000-3-2  
C
Output load > 50 W  
PARAMETER  
DESCRIPTION / CONDITION  
STANDARD  
TEST LEVEL  
CRITERIA  
Reference standards for ITE equipment  
EN 55024  
15 kV air discharge, 8 kV contact,  
at any point of the system.  
3 V/m, 80-1000 MHz, 1 KHz 80% AM.  
Dwell time is 3 sec for 2 Hz modulation  
Dwell time is 1 sec for 1KHz modulation  
±2 kV on AC power port for 1 minute;  
±1 kV on signal/control lines  
ESD  
EN 61000-4-2  
EN 61000-4-3  
EN 61000-4-4  
4
3
3
A
A
A
Radiated Field  
Electric Fast Transient  
Surge  
±2 kV line to line; ± 4 kV line to earth on AC power port EN 61000-4-5  
4
3
A
A
Conducted RF Immunity  
3 VRMS, 0,15-80 MHz, 1 KHz/2 Hz 80% AM  
EN 61000-4-6  
100 - 240VAC  
Drop-out to 5% for 0.5 cycles (10 ms)  
Dip to 70% for 25 cycles (500 ms)  
Interrupts > 95% for 5 s  
EN61000-4-11  
EN61000-4-11  
EN61000-4-11  
A
A
B
Dips and Interruptions  
CERTIFICATION BODY SAFETY STANDARDS  
CATEGORY  
CSA/UL  
IEC IECEE  
CB Certification  
CSA C22.2 No. 60950-1, UL 60950-1 and UL 62368-1  
IEC/EN 60950-1 and IEC/EN 62368-1  
Audio Video and IT equipment  
Audio Video and IT equipment  
CE  
Directive 2014/35/EU: Electrical Safety: LowVoltage electrical equipment (LVD) Audio Video and IT equipment  
Directive 2014/30/EU: Electromagnetic Compatibility (EMC)  
Directive EU 2015/863: RoHS 3  
PARAMETER  
DESCRIPTION / CONDITION  
410 g (0.90 lb)  
525 g (1.16 lb) UC model  
575 g (1.43 lb) PC model  
670 g (1.48 lb) T model  
Weight  
525 g (1.16 lb) S model  
76.0 x 164.2 x 37.7 mm (2.99 x 6.46 x 1.48 in)  
84.4 x 166.5 x 40.0 mm (3.32 x 6.55 x 1.57 in) UC model  
84.4 x 170.5 x 41.0 mm (3.32 x 6.71 x 1.61 in) PC model  
84.4 x 166.5 x 41.0 mm (3.32 x 6.55 x 1.61 in) T model  
84.4 x 183.0 x 41.0 mm (3.32 x 7.20 x 1.61 in) S model  
Overall Dimensions  
tech.support@psbel.com  
9
ABC401 Series  
Overall Dimensions: 76.0 x 164.2 x 37.7 mm (2.99 x 6.46 x 1.48 in)  
Weight:  
410 g (0.90 lb)  
North America  
Asia-Pacific  
Europe, Middle East  
+86 755 298 85888  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
10  
ABC401 Series  
Overall Dimensions: 84.4 x 166.5 x 40.0 mm (3.32 x 6.55 x 1.57 in)  
Weight: 525 g (1.16 lb)  
tech.support@psbel.com  
11  
ABC401 Series  
Overall Dimensions: 84.4 x 170.5 x 41.0 mm (3.32 x 6.71 x 1.61 in)  
Weight:  
575 g (1.43 lb)  
North America  
Asia-Pacific  
Europe, Middle East  
+86 755 298 85888  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
12  
ABC401 Series  
Overall Dimensions: 84.4 x 166.5 x 41.0 mm (3.32 x 6.55 x 1.61 in)  
Weight: 670 g (1.48 lb)  
tech.support@psbel.com  
13  
ABC401 Series  
Overall Dimensions: 84.4 x 183.0 x 41.0 mm (3.32 x 7.20 x 1.61 in)  
Weight:  
625 g (1.416lb)  
North America  
Asia-Pacific  
Europe, Middle East  
+86 755 298 85888  
+353 61 225 977  
+1 408 785 5200  
© 2020 Bel Power Solutions & Protection  
BCD.01060_B  
14  
ABC401 Series  
AC INPUT CONNECTOR P1  
Molex 26-60-4030 or equivalent  
PIN REF.  
FUNCTION  
Line 1  
1
2
3
Mating Connector:  
Molex 09-93-0300 (Crimp Terminal Housing)  
Molex 08-50-0105 (Crimp Terminal, 18-24 AWG)  
Not Present  
Line 2  
PROTECTION EARTH CONNECTOR - P5  
PIN REF.  
FUNCTION  
GDN  
AC Ground  
Tyco 63849-1 equivalent  
Mating Connector:  
Any tin finished 6.35 x 0.81 mm receptacle  
DC OUTPUT CONNECTOR P4  
Molex 39-28-8120 or equivalent  
PIN REF.  
1 6  
FUNCTION  
V1  
7 12  
DC Return  
Mating Connector:  
Molex 39-01-2120 (Crimp Terminal Housing)  
Molex 39-00-0039 (Crimp Terminal, 18-24 AWG)  
PIN REF.  
FUNCTION  
+5VSB  
P_OK  
-V2  
SIGNAL CONNECTOR P6  
Molex 90130-1108 or equivalent  
1
2
3
4
5
6
7
8
Mating Connector  
Molex 90142-0008 (Crimp Terminal Housing)  
Molex 90119-0109 (Crimp Terminal, 22-24 AWG)  
PS_ON  
RS+  
RTN  
+V2  
RTN  
NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for useas critical components in life support systems,  
equipment used in hazardous environments, or nuclear control systems.  
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the  
date manufactured. Specifications are subject to change without notice.  
tech.support@psbel.com  

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