AC Power Supply in EX4300 Switches

 

The AC power supply in EX4300 switches is a hot-insertable and hot-removable field-replaceable unit (FRU): You can install it without powering off the switch or disrupting the switching function.

All the EX4300 switches that are powered by AC power supplies, except EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and EX4300-48MP-S switches are shipped with one AC power supply installed in the rear panel of the switches. EX4300-24T-S, EX4300-24P-S, EX4300-32F-S, EX4300-48T-S, EX4300-48P-S, and EX4300-48MP-S switches are not shipped with power supplies; you must order the power supplies separately.

Note

EX4300 switches except EX4300-48MP and EX4300-48MP-S switches support 350 W, 715 W, and 1100 W AC power supplies. EX4300-48MP and EX4300-48MP-S switches support 715 W, 1100 W, and 1400 W AC power supplies.

This topic describes the AC power supplies.

Caution

Do not mix:

  • AC and DC power supplies in the same chassis

  • Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.

  • Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.

  • Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.

Characteristics of an AC Power Supply

The AC power supplies for EX4300 switches are available in 350 W, 715 W, 1100 W, and 1400 W models. Figure 1 shows an AC power supply for EX4300 switches. The AC power supplies support Power over Ethernet (PoE+) in EX4300-24P, EX4300-24P-S, EX4300-48P, EX4300-48P-S, EX4300-48MP, and EX4300-48MP-S models.

Figure 1: AC Power Supply for EX4300 Switches
AC Power Supply for
EX4300 Switches

Table 1 lists the details of the 350 W, 715 W, 1100 W, and 1400 W AC power supplies used in EX4300 switches.

Table 1: Details of the AC Power Supplies in EX4300 Switches

Details

350 W AC Power Supply

715 W AC Power Supply

1100 W AC Power Supply

1400 W AC Power Supply

Model number

  • JPSU-350-AC-AFO-A

  • JPSU-350-AC-AFI-A

JPSU-715-AC-AFO-A

JPSU-1100-AC-AFO-A

JPSU-1400W-AC-AFO

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Hot-insertable and hot-removable

Hot-insertable and hot-removable

Hot-insertable and hot-removable

Power supply weight

2.43 lb (1.1 kg)

2.43 lb (1.1 kg)

2.43 lb (1.1 kg)

3.06 lb (1.39 kg)

Minimum installed in chassis

1

1

1

1

Maximum installed in chassis

2

2

2

2

Power supply slots

Install in power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

Install in power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

Install in power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

Install in power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

AC appliance Inlet

Note: Each AC appliance inlet requires a dedicated AC power feed.

Number

1

1

1

1

Type

IEC-320-C13

IEC-320-C13

IEC-320-C15

IEC-320-C15

Rating

2 A

Note: EX4300-48MP and EX4300-48MP-S switches do not support this power supply.

  • EX4300 switches except EX4300-48MP and EX4300-48MP-S switches—11–5 A

  • EX4300-48MP and EX4300-48MP-S switches—10 A

  • EX4300 switches except EX4300-48MP and EX4300-48MP-S switches—12–6 A

  • EX4300-48MP and EX4300-48MP-S switches—15 A

12–8 A

Fans

Internal

Internal

Internal

Internal

Airflow

  • Front-to-back, indicated by label AIR OUT (AFO)

  • Back-to-front, indicated by label AIR IN (AFI)

Front-to-back, indicated by label AIR OUT (AFO)

Front-to-back, indicated by label AIR OUT (AFO)

Front-to-back, indicated by label AIR OUT (AFO)

AC power cord retainer

1

1

1

1

Power supply status LEDs

IN OK and OUT OK

IN OK and OUT OK

IN OK and OUT OK

IN OK and OUT OK

Operating range

  • Low line: 100–120 VAC

  • High line: 200–240 VAC

  • Low line: 100–120 VAC

  • High line: 200–240 VAC

  • Low line: 115–120 VAC

  • High line: 200–240 VAC

  • Low line: 100–140 VAC

  • High line: 200–240 VAC

To prevent electrical injury while installing or removing AC power supplies, carefully follow instructions in Installing an AC Power Supply in an EX4300 Switch and Removing an AC Power Supply from an EX4300 Switch.

AC Power Supply Airflow

Each power supply has its own fan and is cooled by its own internal cooling system.

Each power supply has a label AIR OUT (AFO) or AIR IN (AFI) on the faceplate of the power supply that indicates the direction of airflow in the power supply.

Table 2 lists the AC power supply models and the direction of airflow in them.

Table 2: Airflow Direction in AC Power Supply Models for EX4300 Switches

Model

Label on Power Supply

Direction of Airflow

JPSU-350-AC-AFO-A

AIR OUT (AFO)

Front-to-back—that is, air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

JPSU-350-AC-AFI-A

AIR IN (AFI)

Back-to-front—that is, air intake to cool the chassis is through the vents on the rear panel of the chassis and hot air exhausts through the vents on the front panel of the chassis.

JPSU-715-AC-AFO-A

AIR OUT (AFO)

Front-to-back—that is, air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

JPSU-1100-AC-AFO-A

AIR OUT (AFO)

Front-to-back—that is, air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

JPSU-1400W-AC-AFO

AIR OUT (AFO)

Front-to-back—that is, air intake to cool the chassis is through the vents on the front panel of the chassis and hot air exhausts through the vents on the rear panel of the chassis.

N+0 Redundancy Configuration of AC Power Supplies

In an N+0 redundancy configuration, lower priority PoE ports may be impacted if a power supply fails.

Table 3 lists the N+0 power calculation for 24-port EX4300 switches that use 350 W, 715 W, and 1100 W power supplies.

Table 3: N+0 AC Power Calculations for 24-Port EX4300 Switches

Power Supply Rating

Total Power (in watts)

PSU0(W) + PSU1(W)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports Enabled for PoE+

PSU0

PSU1

350 W AC

350

350

0

150

200

6

350 W AC

350 W AC

700

665

0

150

515

17

350 W AC

715 W AC

1065

993.5

0

150

720

24

715 W AC

715

715

0

150

565

18

715 W AC

715 W AC

1430

1358.5

0

150

720

24

715 W AC

1100 W AC

1815

1705

0

150

720

24

1100 W AC

1100

1100

0

150

720

24

1100 W AC

1100 W AC

2200

2090

0

150

720

24

1100 W AC

350 W AC

1450

1340

0

150

720

24

Table 4 lists the N+0 power calculation for 32-port EX4300 switches that use the 350 W power supply.

Note

32-port EX4300 switches does not support Power over Ethernet (PoE).

Table 4: N+0 AC Power Calculations for 32-Port EX4300 Switches

Power Supply Rating

Total Power (in watts)

PSU0(W) + PSU1(W)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

PSU0

PSU1

350 W AC

350

350

0

164

350 W AC

350 W AC

700

665

0

164

Table 5 lists the N+0 power calculation for 48-port EX4300 switches except EX4300-48MP and EX4300-48MP-S switches that use 350 W, 715 W, and 1100 W power supplies.

Table 5: N+0 AC Power Calculations for 48-Port EX4300 Switches Except EX4300-48MP and EX4300-48MP-S Switches

Power Supply Rating

Total Power (in watts)

PSU0(W) + PSU1(W)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports Enabled for PoE+

PSU0

PSU1

350 W AC

350

350

0

175

175

5

350 W AC

350 W AC

700

665

0

175

490

16

350 W AC

715 W AC

1065

993.5

0

175

818

27

715 W AC

715

715

0

175

540

18

715 W AC

715 W AC

1430

1358.5

0

175

1183

39

715 W AC

1100 W AC

1815

1705

0

175

1440

48

1100 W AC

1100

1100

0

175

925

30

1100 W AC

1100 W AC

2200

2090

0

175

1440

48

1100 W AC

350 W AC

1450

1340

0

175

1165

38

Table 6 lists the N+0 power calculation for EX4300-48MP and EX4300-48MP-S switches that use 715 W, 1100 W, and 1400 W power supplies.

Note

When operating at low line configuration, the 1400 W power supply operates as 1100 W power supply.

Table 6: N+0 AC Power Calculations for EX4300-48MP and EX4300-48MP-S Switches

Power Supply Rating

Total Power (in watts)

PSU0(W) + PSU1(W)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports Enabled for PoE+

Ports Enabled for PoE++

PSU0

PSU1

715 W AC

715

679

0

300

379

12

3

715 W AC

715 W AC

1430

1358

0

300

1058

35

11

715 W AC

1100 W AC

1815

1615

0

300

1315

43

13

715 W AC

1400 W AC

2115

1615

0

300

1315

43

13

1100 W AC

1100

1045

0

300

745

24

7

1100 W AC

1100 W AC

2200

1670

0

300

1370

45

14

1100 W AC

1400 W AC

2500

1670

0

300

1370

45

14

1400 W AC

1400 W AC

1330

0

300

1030

34

10

1400 W AC

1400 W AC

2800

2000

0

300

1700

48

17

N+N Redundancy Configuration of AC Power Supplies

You can configure your switch for N+N redundancy, in which N power supplies can be removed or fail and the remaining N power supplies continue to supply power to the switch without interruption.

Table 7 lists the N+N power calculation for 24-port EX4300 switches that use 350 W, 715 W, and 1100 W power supplies.

Table 7: N+N AC Power Calculations for 24-Port EX4300 Switches

Power Supply Rating

Total Power (in watts)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports enabled for PoE+

PSU0

PSU1

350 W AC

350

350

0

150

200

6

350 W AC

350 W AC

700

350

350

150

200

6

350 W AC

715 W AC

1065

350

350

150

200

6

715 W AC

715

715

0

150

565

18

715 W AC

715 W AC

1430

715

715

150

565

18

715 W AC

1100 W AC

1815

715

715

150

565

18

1100 W AC

1100

1100

0

150

720

24

1100 W AC

1100 W AC

2200

1100

1100

150

720

24

1100 W AC

350 W AC

1450

350

350

150

200

6

Table 8 lists the N+N power calculation for 32-port EX4300 switches that use 350 W power supplies.

Note

32-port EX4300 switches does not support Power over Ethernet (PoE).

Table 8: N+N AC Power Calculations for 32-Port EX4300 Switches

Power Supply Rating

Total Power (in watts)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

PSU0

PSU1

350 W AC

350

350

0

177

350 W AC

350 W AC

700

350

350

177

Table 9 lists the N+N power calculation for 48-port EX4300 switches except EX4300-48MP and EX4300-48MP-S switches that use 350 W, 715 W, and 1100 W power supplies.

Table 9: N+N AC Power Calculations for 48-Port EX4300 Switches Except EX4300-48MP and EX4300-48MP-S Switches

Power Supply Rating

Total Power (in watts)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports enabled for PoE+

PSU0

PSU1

350 W AC

350

350

0

175

175

5

350 W AC

350 W AC

700

350

350

175

175

5

350 W AC

715 W AC

1065

350

350

175

175

5

715 W AC

715

715

0

175

540

18

715 W AC

715 W AC

1430

715

715

175

540

18

715 W AC

1100 W AC

1815

715

715

175

540

18

1100 W AC

1100

1100

0

175

925

30

1100 W AC

1100 W AC

2200

1100

1100

175

925

30

1100 W AC

350 W AC

1450

350

350

175

175

5

Table 10 lists the N+N power calculation for EX4300-48MP and EX4300-48MP-S switches that use 715 W, 1100 W, and 1400 W power supplies.

Note

When operating at low line configuration, the 1400 W power supply operates as 1100 W power supply.

Table 10: N+N AC Power Calculations for EX4300-48MP and EX4300-48MP-S Switches

Power Supply Rating

Total Power (in watts)

Usable System Power (in watts)

Backup Power (in watts)

Base Power (in watts)

Available PoE Power (in watts)

Ports enabled for PoE+

Ports enabled for PoE++

PSU0

PSU1

715 W AC

715

679

0

300

379

12

3

715 W AC

715 W AC

1430

679

679

300

379

12

3

715 W AC

1100 W AC

1815

679

679

300

379

12

3

715 W AC

1400 W AC

2115

679

679

300

379

12

3

1100 W AC

1100

1045

0

300

745

24

7

1100 W AC

1100 W AC

2200

1045

1045

300

745

24

7

1100 W AC

1400 W AC

2500

1045

1045

300

745

24

7

1400 W AC

1400

1330

0

300

1030

34

10

1400 W AC

1400 W AC

2800

1330

1330

300

1030

34

10