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Contact Factory for Replacement Model
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Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
Input Specifications
Parameter
Operating Range
Conditions
Min
Max
Units
264
VAC
120VAC, cold start
37
APK
240VAC cold start
70
APK
47-63 Hz
Typ
90
Inrush Current Limiting
Efficiency
120V, full load
70
%
240V, full load
75
%
Power Factor Correction (PFC)
0.99
Meets IEC 1000-4-7/EN61000-3-2 (formerly IEC 555-2)
Remote Sense
Remote Sense is provided on Output #1 and will
compensate for 0.7V of line drop. Remote Sense leads are
protected against open, short and reversal.
Remote On/Of
The power supply is turned on with a TTL logic ‘1’ (or open)
signal and turned off by a switch closure or TTL logic ‘0’
referenced to (-) sense terminal. Consult the factory for other
options.
Over Voltage Protection
Output #1: 6.5V ± 0.5 VDC.
The power supply will latch off until AC power is cycled.
Over Current Protection
Individual current limit on all outputs. Automatic recovery
upon fault removal.
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200 μsec for a 25% load step
change.
Power Fail Signal
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 5msec before loss of DC output. On
AC input turn-on, signal remains low until outputs are in
regulation. Consult the factory for other options.
N+1 Load Share
Output #1 has active load sharing circuitry. Units will load
share within 1.5% of Maximum Rated Load.
Over Temperature Protection
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
Safety
UL Recognized: UL File Number E14675 (1950 & 1012)
CSA Certified: CSA File Number LR 9070-154C
(C22.2 No. 234-M90, Level 6)
TUV License Number: R9576031 (EN60950) (IEC950)
Cooling
The unit is designed to operate with 30 CFM of airflow.
Output Isolation
All outputs are fully isolated.
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Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
Output Voltages and Maximum Rated Loads
OUTPUT #1
VOUT
IMAX
OUTPUT #2
VNOM IMAX/IPK
OUTPUT #3
VNOM IMAX/IPK
NX350-U3A
± 5V
50A
± 12V
10A/12A
± 12V
8A/10A
-
-
NX350-U3B
± 5V
50A
± 15V
10A/12A
± 15V
8A/10A
-
-
NX350-U4C
± 5V
50A
± 12V
10A/12A
± 12V
8A/10A
± 5V
3.0A/4.0A
NX350-U4D
± 5V
50A
± 12V
10A/12A
± 12V
8A/10A
± 24V 1.5A/2.0A
NX350-U4E
± 5V
50A
± 12V
10A/12A
± 12V
8A/10A
± 12V 3.0A/4.0A
NX350-U4F
± 5V
50A
± 15V
10A/12A
± 15V
8A/10A
± 5V
NX350-U4G
± 5V
50A
± 15V
10A/12A
± 15V
8A/10A
± 24V 1.5A/2.0A
NX350-U4H
± 5V
50A
± 15V
10A/12A
± 15V
8A/10A
± 12V 3.0A/4.0A
MODEL NUMBER
OUTPUT #4
VNOM IMAX/IPK
3.0A/4.0A
Note: Peak current ratings are for 10sec maximum. Total power not to exceed 350 watts.
Output Specifications
Parameter
Limits
Regulation
Line
± 0.03%
Load
±0.25%
Cross
±0.05%
Minimum Load
Output #1
3.0A
Auxiliary Outputs
0.1A
Hold-Up Time
20mSec at Full Load
Parameter
Conditions
Voltage Adustment Range
Nominal line on all outputs
PARD
Min
Typ
Max
±5
Peak-to-peak 20 MHz bandwidth
Units
%
1
%
50
°C
70
°C
+85
°C
Temperature
Operating
0
Derates to half power
Storage
Temperature Coefficient (TC)
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-20
After half hour warm-up
± 0.02
%/°C
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
Mechanical
TOP VIEW
0.040
1.95
1
8.50
0.25
COVER
0.55
1
TB2
3.90
4.85
1
J9
OUTPUT NO. 1
5v RETURN
9.00
TB1
6-32 THD 4 PLC’S
Maximum depth of mounting
screws is 0.156 inches
5v
NOTES:
All measurements are in inches
FAN MOUNTED ON COVER WILL ADD 1.30”.
COOLING: The NX350 is designed to operate with 30 CM airflow.
SHOCK AND VIBRATION: The NX350 meets the requirements of MIL STD-810D. (Vibration-Method 514.3 Procedure I; Shock-Method 516.3 Procedure I.)
WEIGHT: Approximately 3 lbs.
Terminal Block 1
POS
J9 Connector
Terminal Block 2
FUNCTION
PIN
FUNCTION
1
-V2
1
+ Sense
2
+V2
2
- Sense
3
-V3
3
N/C
4
+V3
4
N/C
5
-V4
5
Start Up Sync.
6
+V4
6
Power Fail
7
Remote Inhibit
FUNCTION
POS
1
AC Line
2
AC Neutral
3
Ground
8
Current Share
9
Cntl Signal Rtn
J9 Connector
Molex No.
Connector
22-28-1090
Standard Options are shown, consult factory for other available options.
www.murata-ps.com
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000