EX4100 Power System

Characteristics of an AC Power Supply

The AC power supplies for EX4100 switches are field-replaceable units (FRUs).

• The EX4100-24P and EX4100-48P switches use 920-W power supplies. The AC power supplies support Power over Ethernet (PoE+) in EX4100-24P and EX4100-48P switch models.

• The EX4100-24MP and EX4100-48MP switches use 920-W power supplies. The AC power supplies support Power over Ethernet (PoE++) in EX4100-24MP and EX4100-48MP switch models.

• The EX4100-24T, EX4100-48T, and EX4100-48T-AFI switches use 150-W power supplies.

Refer EX4100 Power System to check which EX4100 models use which PSUs or built-in power supplies.

Table 1 lists details of the 920 W, 150 W AC power supplies used in EX4100 switches.

Table 1: Details of the AC Power Supplies in EX4100 Switches

Details		920 W AC Power Supply	150 W AC Power Supply
Model number		JPSU-920-AC-AFO	JPSU-150-AC-AFO JPSU-150-AC-AFI
Minimum installed in chassis		1	1
Maximum installed in chassis		2	2
AC appliance inlet Note: Each AC appliance inlet requires a dedicated AC power source.	Number	1	1
	Type	I
Power supply status LEDs		AC OK and DC OK	AC OK and DC OK

To prevent electrical injury while installing or removing AC power supplies, carefully follow instructions in Install an AC Power Supply in an EX4100 Switch and Remove an AC Power Supply from an EX4100 Switch.

Specifications of the AC Power Supplies Used in EX4100 Switches

• Table 2 provides the power supply specifications of the 920 W AC power supplies.

• Table 3 provides the power supply specifications of the 150 W AC power supplies.

Table 2: Specifications of the 920-W AC Power Supplies Used in EX4100 Switches

Item	Specification
AC input voltage	Low-voltage line: 100–127 VAC High-voltage line: 200–240 VAC
AC input line frequency	50–60 Hz
AC input current rating	Low-voltage line: 12 A High-voltage line: 6.5 A
Output power	920 W

Table 3: Specifications of the 150-W AC Power Supplies Used in EX4100 Switches

Item	Specification
AC input voltage	Low-voltage line: 100–127 VAC High-voltage line: 200–240 VAC
AC input line frequency	50–60 Hz
AC input current rating	Low-voltage line: 3 A High-voltage line: 1.5 A
Output power	150 W

PoE Budget Planning

Table 4 shows the PoE budget planning details in EX4100-24P and EX4100-48P switch models. Table 5 shows the PoE budget planning details in EX4100-24MP and EX4100-48MP switches.

Table 4: PoE Budget Planning Details of EX4100-24P and EX4100-48P Switch Models

Model	System Budget	PoE Budget	Total Budget	Total PSU power
48P one PSU	106 W	740 W	846 W	920 W
48P two PSU	106 W	1440 W	1546 W	1840 W
24P one PSU	93 W	740 W	833 W	920 W
24P two PSU	93 W	1440 W	1533 W	1840 W

Table 5: PoE Budget Planning Details of EX4100-24MP and EX4100-48MP Switch Models

Model	System Budget	PoE Budget	Total Budget	Total PSU power
48MP one PSU	140 W	740 W	880 W	920 W
48MP two PSU	140 W	1620 W	1760 W	1840 W
24MP one PSU	129 W	740 W	869 W	920 W
24MP two PSU	129 W	1620 W	1749 W	1840 W

Note:

Apart from the aforementioned combinations, any other combination will be insufficient to power the 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 or AIR IN on the faceplate of the power supply. The label indicates the direction of airflow in the power supply. Table 6 lists the AC power supply models and the direction of airflow in them.

Table 6: Airflow Direction in AC Power Supply Models for EX4100 Switches

Model	Label on Power Supply	Direction of Airflow
JPSU-920-AC-AFO JPSU-150-AC-AFO	AIR OUT	Front to back. Air to cool the chassis enters through the vents on the front panel of the chassis. Hot air exits through the vents on the rear panel of the chassis.
JPSU-150-AC-AFI	AIR IN	Back to front. Air to cool the chassis enters through the vents on the rear panel of the chassis. Hot air exits through the vents on the front panel of the chassis.

Specifications of the Power Cord for AC Power Supplies for EX4100 Switches

A detachable AC power cord is supplied with the AC power supplies. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

CAUTION:

The AC power cord provided with each power supply is intended for use with that power supply only and not for any other use.

Note:

In North America, AC power cords must not exceed 4.5 meters (approximately 14.75 feet) in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and with Canadian Electrical Code (CEC) Section 4-010(3). The cords supplied with the switch are in compliance.

Table 7 gives the AC power cord specifications for the countries and regions listed in the table.

Table 7: AC Power Cord Specifications

Country or Region	Electrical Specifications	Plug Standards	Juniper Model Number
Argentina	250 VAC, 10 A, 50 Hz	IRAM 2073 Type RA/3	CBL-EX-PWR-C13-AR
Australia	250 VAC, 10 A, 50 Hz	AS/NZZS 3112 Type SAA/3	CBL-EX-PWR-C13-AU
Brazil	250 VAC, 10 A, 50 Hz	NBR 14136 Type BR/3	CBL-EX-PWR-C13-BR
China	250 VAC, 10 A, 50 Hz	GB 1002-1996 Type PRC/3	CBL-EX-PWR-C13-CH
Europe (except Italy, Switzerland, and the United Kingdom)	250 VAC, 10 A, 50 Hz	CEE (7) VII Type VIIG	CBL-EX-PWR-C13-EU
India	250 VAC, 10 A, 50 Hz	IS 1293 Type IND/3	CBL-EX-PWR-C13-IN
Israel	250 VAC, 10 A, 50 Hz	SI 32/1971 Type IL/3G	CBL-EX-PWR-C13-IL
Italy	250 VAC, 10 A, 50 Hz	CEI 23-16 Type I/3G	CBL-EX-PWR-C13-IT
Japan	125 VAC, 12 A, 50 Hz or 60 Hz	SS-00259 Type VCTF	CBL-EX-PWR-C13-JP
Korea	250 VAC, 10 A, 50 Hz or 60 Hz	CEE (7) VII Type VIIGK	CBL-EX-PWR-C13-KR
North America*	125 VAC, 13 A, 60 Hz	NEMA 5-15 Type N5-15	CBL-EX-PWR-C13-US
	125 VAC, 15 A, 60 Hz	NEMA 5-15 Type N5-15	CBL-PWR-C13-US-48P
South Africa	250 VAC, 10 A, 50 Hz	SABS 164/1:1992 Type ZA/13	CBL-EX-PWR-C13-SA
Switzerland	250 VAC, 10 A, 50 Hz	SEV 6534-2 Type 12G	CBL-EX-PWR-C13-SZ
United Kingdom	250 VAC, 10 A, 50 Hz	BS 1363/A Type BS89/13	CBL-EX-PWR-C13-UK

Note:

For North America, use AC power cords with specifications 125 VAC, 13 A, 60 Hz for EX4100-24T and EX4100-48T.

Figure 3 illustrates the plug on the power cord for some of the countries or regions listed in Table 7.

CAUTION:

Do not use the AC power cord with any other product other than EX4100.

CAUTION:

Power cords must not block access to switch components.

Characteristics of a DC Power Supply

The DC power supplies for EX4100 switches are available in 150 W model. EX4100-48T-DC, EX4100-24T-DC support 150 W DC power supplies. You can install up to two DC power supplies in an EX4100 switch. Power supplies are installed in the power supply slots labeled PSU 0 and PSU 1 in the rear panel of the chassis.

Table 8 lists the details of the 150 W DC power supplies used in EX4100 switches.

Table 8: Details of the DC Power Supplies in EX4100 Switches

Details		150 W DC Power Supplies
Model number		JPSU-150-DC-AFO
Minimum number of power supplies installed in chassis		1
Maximum number of power supplies installed in chassis		2
Power supply status LEDs		IN OK and OUT OK

To prevent electrical injury while installing or removing DC power supplies, carefully follow instructions in Install a DC Power Supply in an EX4100 Switch and Remove a DC Power Supply from an EX4100 Switch.

Specifications of the DC Power Supplies Used in EX4100 Switches

Table 9 provides the power supply specifications of the 150 W DC power supplies.

Table 9: Specifications of the 150 W DC Power Supplies Used in EX4100 Switches

Item	Specification
DC input voltage	Rated operating voltage: –48 VDC to –60 VDC
DC input current rating	4.7A - 2.8 A
Output power	150 W

DC Power Supply Airflow

Each power supply has its own fan and internal cooling system. Each power supply has a label AIR OUT or AIR IN on the faceplate of the power supply that indicates the direction of airflow through the power supply. Table 10 lists the DC power supply models and the direction of airflow throughthem.

Table 10: Airflow Direction in DC Power Supply Models for EX4100 Switches

Model	Label on Power Supply	Direction of Airflow
JPSU-150-DC-AFO	AIR OUT	Front to back: Air to cool the chassis enters through the vents on the front panel of the chassis. Hot air exits through the vents on the rear panel of the chassis.