PWR-C1-1100WAC-P – 1100W AC PSU – Catalyst 9300 C1 – Platinum Rated

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PWR-C1-1100WAC-P Description

The PWR-C1-1100WAC-P is a Cisco Catalyst 9300 Series 1100W AC Platinum power supply for the internal power-supply bays of Catalyst 9300, 9300L and 9300X switches. The supply delivers 1100W at -56V and 19.64A from a 115 to 240 VAC autoranging input at 50 to 60 Hz. PWR-C1 supplies are not used with C9300LM switches, which take PWR-C6 supplies.

Quick Specs

Parameter

Specification

Product ID

PWR-C1-1100WAC-P

Product type

1100W AC power supply module

Efficiency class

Platinum certified

Supported switch families

Catalyst 9300, Catalyst 9300L, and Catalyst 9300X

C9300LM support boundary

PWR-C1 supplies are not used with C9300LM switches

Maximum output power

1100W

Input voltage and frequency

115 to 240 VAC autoranging, 50 to 60 Hz

Input current

12-6A

Output rating

-56V at 19.64A

Total output BTU

3,754 BTU/hr, 1100W

Weight

1.4 kg (3.1 lb)

Dimensions

1.58 x 3.25 x 13.7 in. (40.1 x 82.55 x 348.2 mm)

Application Scenarios

Redundant Supply For A PoE Closet

In a wiring closet, a Catalyst 9300 switch with two power-supply bays pairs the 1100W supply with a second module so that PoE phones and access points stay powered if one supply drops out.

PoE Budget Beyond 715W

An access switch whose PoE load outgrows a 715W supply runs the 1100W Platinum supply on either 115 V or 240 V circuits without changing the input arrangement.

Product Comparison

Parameter

PWR-C1-1100WAC-P

PWR-C1-1100WAC

PWR-C1-715WAC-P

PWR-C1-1900WAC-P

Efficiency class

Platinum certified

Standard

Platinum certified

Platinum certified

Supported switch families

C9300, C9300L and C9300X; not C9300LM

C9300; not C9300LM

C9300, C9300L and C9300X; not C9300LM

C9300, C9300L and C9300X; not C9300LM

Maximum output power

1100W

1100W

715W

1900W at 230V; 1500W at 115V

Input voltage and frequency

115 to 240 VAC, 50 to 60 Hz

115 to 240 VAC, 50 to 60 Hz

100 to 240 VAC, 50 to 60 Hz

200 to 240 VAC at 1900W or 115 to 127 VAC at 1500W

Input current

12-6A

12-6A

10-5A

Maximum 12A at 230V; maximum 16A at 115V

Output rating

-56V at 19.64A

-56V at 19.64A

-56V at 12.8A

-56V at 33.92A or -56V at 26.78A

Total output BTU

3,754 BTU/hr

3,754 BTU/hr

2,440 BTU/hr

6,483 BTU/hr at 230V or 5,118 BTU/hr at 115V

PWR-C1-1100WAC-P is the Platinum-rated 1100W supply, while PWR-C1-1100WAC has the same 1100W output as a standard unit that the comparison lists for Catalyst 9300 only. A PoE budget that stays within 715W can use PWR-C1-715WAC-P instead. Output above 1100W needs PWR-C1-1900WAC-P, which delivers 1900W on a 200 to 240 VAC feed and 1500W on 115 to 127 VAC. All of these C1 supplies are excluded from C9300LM switches, which take PWR-C6 supplies.

PoE Power Planning

Planning Item

Cisco-Confirmed Fact

Quote Check

48-port C9300L PoE all-port requirement

Cisco lists 1 x PWR-C1-1100WAC-P or 2 x PWR-C1-715WAC-P for PoE on all ports

Add the 1100W supply when the 48-port C9300L power plan needs all-port PoE headroom

48-port C9300L PoE+ all-port requirement

Cisco lists 2 x PWR-C1-1100WAC-P or 1 x PWR-C1-1100WAC-P plus 1 x PWR-C1-715WAC-P or PWR-C1-715WDC

Confirm the second PSU line before assuming all-port 30W PoE+

Catalyst 9300 dual supply design

Catalyst 9300 switches support dual redundant power supplies and a second supply can be added later

Treat the secondary PSU as a separate power and redundancy decision

Slot population rule

The empty power-supply slot must be covered with a blank module

Keep the cooling requirement visible when only one PSU ships or one PSU is replaced

StackPower environment

Catalyst 9300 power supplies can be mixed in a stack power design

Check the actual power-sharing or redundancy mode before removing or downsizing a PSU

Ordering Checklist

  • Catalyst 9300 hosts: C9300-24H and C9300-48H ship with PWR-C1-1100WAC-P as the default supply on these UPOE+ models.
  • Catalyst 9300L and 9300X hosts: Use it on C9300L-48PF-4G, C9300L-48PF-4X and C9300X-48HX, where it is the default supply.
  • Unsupported hosts: Do not order for C9300LM switches, which use PWR-C6-600WAC or PWR-C6-1KWAC. No PWR-C1 supply can be used in a C9300LM.

Specifications

Parameter Specification Parameter Specification
Product ID PWR-C1-1100WAC-P Product type 1100W AC power supply module
Efficiency class Platinum certified Supported switch families Catalyst 9300, Catalyst 9300L, and Catalyst 9300X
C9300LM support boundary PWR-C1 supplies are not used with C9300LM switches Maximum output power 1100W
AC input voltage 115 to 240 VAC autoranging AC input frequency 50 to 60 Hz
Input current 12-6A Output rating -56V at 19.64A
Total input BTU 4,147 BTU/hr, 1215W Total output BTU 3,754 BTU/hr, 1100W
Weight 1.4 kg (3.1 lb) Dimensions 1.58 x 3.25 x 13.7 in. (40.1 x 82.55 x 348.2 mm)
Power-supply slots Two internal Catalyst 9300 power-supply slots Slot population rule Use a second PSU or blank module in the unused slot
Hot-swap note Power supply is hot-swappable when the power budget remains supported AC status LEDs AC OK and PS OK LEDs indicate input and output status
Meraki-option boundary PWR-C1-1100WAC-P-M is for C9300-M Meraki MS390 boundary MA-PWR-1100WAC is for Meraki MS390

Quality Certifications

Customer Reviews

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    Jesse Lopez
    Posted on 02/04/2026
    Verified Buyer
    4.0

    Had our vendor management team review the documentation. Everything was in order. Took a little longer to clear customs than expected, otherwise excellent.

    Noah Phillips
    Posted on 04/02/2026
    Verified Buyer
    4.0

    Every unit in our bulk order passed inspection. 100% yield. Took a little longer to clear customs than expected, otherwise excellent.

    William Russell
    Posted on 05/01/2026
    Verified Buyer
    5.0

    Layer23 takes the friction out of B2B purchasing.

    Peter Parker
    Posted on 20/07/2025
    Verified Buyer
    5.0

    Super fast delivery! Thanks for helping out.

    Network Tech
    Posted on 15/03/2025
    Verified Buyer
    5.0

    Factory sealed unit. Perfect condition.

Questions & Answers

  • Which Catalyst 9300 switches take PWR-C1-1100WAC-P?

    PWR-C1-1100WAC-P fits the internal power-supply bays of Catalyst 9300, 9300L and 9300X switches. The supply is the default on C9300-24H-A, C9300-24H-E, C9300-48H-A, C9300-48H-E, C9300L-48PF-4G-A, C9300L-48PF-4G-E, C9300L-48PF-4X-A, C9300L-48PF-4X-E, C9300X-48HX-A and C9300X-48HX-E. PWR-C1 supplies are not used with C9300LM switches, which take PWR-C6-600WAC or PWR-C6-1KWAC.
  • Can PWR-C1-1100WAC-P run as the only supply in a Catalyst 9300?

    Yes. The switch has two internal power-supply slots, and the unused slot takes a second PSU or a blank module. The supply is hot-swappable when the power budget remains supported. The supply delivers 1100W at -56V.
  • How much PoE do C9300X-48HX-A and C9300X-48HX-E offer with one PWR-C1-1100WAC-P, and with a second supply?

    They offer 590W of PoE with one PWR-C1-1100WAC-P, per the Catalyst 9300 hardware installation guide. Adding a second PWR-C1-1100WAC-P raises the budget to 1690W. A second PWR-C1-1900WAC-P raises it to 2490W, per the Catalyst 9300 data sheet. Fit both supplies when many high-power endpoints share the switch.
  • What PoE ceiling applies to C9300X-24HX-A and C9300X-24HX-E when PWR-C1-1100WAC-P is the primary supply?

    The budget starts at 735W with one PWR-C1-1100WAC-P, per the Catalyst 9300 data sheet. A second PWR-C1-1100WAC-P gives 1835W. A second PWR-C1-1900WAC-P reaches 2160W, which is the port limit of 24 x 90W, so a larger second supply adds nothing beyond it.
  • How many PWR-C1-1100WAC-P supplies give C9300L-48P-4G-A full PoE+ on every port?

    Two. Full PoE+ on every port needs two PWR-C1-1100WAC-P, or one PWR-C1-1100WAC-P plus one PWR-C1-715WAC-P, per Table 13 of the Catalyst 9300 data sheet. Full 15.4W PoE on every port is met by one PWR-C1-1100WAC-P alone, so the second supply is for PoE+ and redundancy.
  • Which PID orders PWR-C1-1100WAC-P as a spare, and which receptacle and cord rating does it use?

    The spare PID is PWR-C1-1100WAC-P=, listed as a Platinum-rated spare in the Catalyst 9300 data sheet ordering table. The supply uses an IEC 320-C16 receptacle with a 15A power cord, so order the matching cord for the closet circuit and keep one spare module on site.

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DataSheet Downloads

  • PWR-C1-1100WAC-P Datasheet