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SRX4120 Power System

The SRX4120 power system includes AC and DC power supply units and related power cords and cables. The power supply units operate within certain ranges and are equipped with status indicator LEDs.

The SRX4120 is powered by two AC or two DC power supply units (PSUs). The power system supports 1+1 redundancy.

Note: We ship the SRX4120 with only one PSU. You can order the second PSU separately if required.

The PSUs in the SRX4120 are hot-insertable and hot-removable field-replaceable units (FRUs). You can install the PSUs in the power supply unit slots on the rear of the device.

The system supports the following PSUs:

AC DC

JPSU-450W-AC

JPSU-650W-DC-AFO
CAUTION:

Do not mix AC and DC PSUs in the same chassis.

The maximum and typical power consumption of the system depends upon the type of PSU.

Table 1: System Power Consumption
PSU Type Maximum System Power Consumption Typical System Power Consumption

JPSU-450W-AC

229 W

186 W

JPSU-650W-DC-AFO

238 W

194 W
Table 2: Average System Heat Dissipation
PSU Average Heat Dissipation

1 DC PSU (40 V)

653.4 BTU/h

2 DC PSUs (40 V)

737 BTU/h

1 AC PSU (110 V)

682 BTU/h

1 AC PSU (230 V)

662 BTU/h

2 AC PSUs (110 V)

703 BTU/h

2 AC PSUs (230 V)

682 BTU/h

JPSU-450W-AC

JPSU-450W-AC

Technical drawing of a hot-swappable module with latch, connector interface, housing, and mounting mechanism.
Callout Name

1

Power cord retainer

2

PSU handle

3

AC power inlet

4

PSU latch

JPSU-450W-AC Specifications

Table 3: Physical Specifications
Specification Value

Height

1.61 in. (4.1 cm)

Width

2.17 in. (5.5 cm)

Depth

14.17 in. (36 cm) (including handle)

Weight

2.14 lb (0.97 kg)

Airflow

AFO
Table 4: Electrical Specifications
Specification Value

Maximum power output

450 W

Input voltage

100–127 VAC / 200–240 VAC

Input current rating

5.5 A at 100-127 VAC

3 A at 200-240 VAC

Input line frequency

50–60 Hz

Circuit breaker rating

10 A (250 VAC)

JPSU-450W-AC LEDs

The PSU has a single bi-color LED that indicates the status.

Technical diagram of an electrical connector with labeled sections. Part marked as 1 with reference number g102400.
Callout Name State Description

1

Status

Off

No power input.

Solid green

PSU is operating normally.

Blinking green

The device is in standby mode.

Solid amber

The system has detected an error in the PSU. Replace the PSU immediately. To maintain proper airflow through the chassis, leave the PSU installed in the chassis until you are ready to replace it.

Blinking amber

PSU is operating under overload.

Supported AC Power Cords on the JPSU-450W-AC

Warning:

The AC power cord for the device is intended for use with the device only and not for any other use.
Note:

In North America, AC power cords must not exceed a length of 4.5 m (approximately 14.75 ft). This length complies with National Electrical code (NEC) Section 400-8 (NFPA 75, 5-2.2) and 210-52, and Canadian Electrical Code (CEC) Section 4-010(3).
Table 5: Supported AC Power Cords
Locale Cord Set Rating Plug Standard

Australia

250 VAC, 10 A, 50 Hz

AS/NZ 3112-1993

China

250 VAC, 10 A, 50 Hz

GB2099.1 1996 and GB 1002 1996 (CH1-10P)

Europe (except Italy and United Kingdom)

250 VAC, 10 A, 50 Hz

CEE (7) VII

Italy

250 VAC, 10 A, 50 Hz

CEI 23-16/VII

Japan

125 VAC, 12 A, 50 or 60 Hz

JIS 8303

North America

125 VAC, 10 A, 60 Hz

NEMA 5-15

United Kingdom

250 VAC, 10 A, 50 Hz

BS 1363A
Figure 1: AC Plug Types AC Plug Types
Note:

Power cords and cables must not block access to device components or drape where people might trip on the cables.

JPSU-650W-DC-AFO

JPSU-650W-DC-AFO

Technical drawing of a modular component with numbered labels showing a handle mechanism, connector interface, and locking tab.
Callout Name

1

PSU handle

2

DC power terminals

3

PSU latch

JPSU-650W-DC-AFO Specifications

Table 6: Physical Specifications
Specification Value

Height

1.61 in. (4.1 cm)

Width

2.17 in. (5.5 cm)

Depth

14.17 in. (36 cm)

Weight

2.16 lb (0.98 kg)

Airflow

AFO
Table 7: Electrical Specifications
Specification Value

Maximum power output

650 W

Input voltage

-44 VDC through -72 VDC

Input current rating

20 A maximum

Circuit breaker rating

10 A (80 VDC)

JPSU-650W-DC-AFO LEDs

Diagram of an electrical panel with a main switch, row of circuit breakers, circles numbered 1 to 3, and label g102401 on the right.
Callout Name State Description

1

Input

Off

No power input.

Solid green

The PSU is operating normally.

2

Output

Off

No power output.

Solid green

The PSU is operating normally.

3

Fault

Solid amber

The system has detected an error in the PSU. Replace the PSU immediately. To maintain proper airflow through the chassis, leave the PSU installed in the chassis until you are ready to replace it.