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Overview
The Cisco PWR-C49E-300AC-R is a power supply unit designed to support the Catalyst 4948E Ethernet Switch, ensuring a stable and reliable power source for network operations. This unit is an essential component for maintaining network uptime and efficiency, providing a direct AC power input and converting it to the necessary DC power needed by the switch.
Featuring a versatile input voltage range, the PWR-C49E-300AC-R accommodates both low-line and high-line AC inputs. For low-line conditions, it accepts an input voltage from 85 VAC (min) to 132 VAC (max), typically at 120 VAC nominal. For high-line conditions, the range extends from 170 VAC (min) to 264 VAC (max), with a nominal value of 230 VAC. This flexibility ensures the power supply can adapt to various power conditions around the world.
The unit's AC input current is rated at 4 A maximum when operating at 100 VAC, and it reduces to 2 A maximum at 240 VAC, optimizing power efficiency across different voltages. With an AC input frequency specification from 47 to 63 Hz, the PWR-C49E-300AC-R is compatible with a wide range of electrical standards, further enhancing its global usability.
Power output is another critical specification, with the unit capable of delivering 25 A at +12 VDC. This output is sufficient to support the operations of the Catalyst 4948E Ethernet Switch under various conditions. The power supply also features an output holdup time of 20 ms minimum, ensuring brief power interruptions won't disrupt switch operations.
The kVA rating of the PWR-C49E-300AC-R stands at 0.375 kVA, indicating the power supply's capacity in terms of voltage and current supplied to the connected device. This rating is a key factor in understanding the efficiency and capability of the power supply in supporting network hardware.
Cooling is managed by a single fan, utilizing a back-to-front airflow direction to maintain optimal operating temperatures. Effective cooling is crucial for maintaining the longevity and reliability of both the power supply and the network switch it supports.
Weighing in at just 2b (0.9 kg), the PWR-C49E-300AC-R is lightweight, facilitating easy installation and handling. Its compact design does not compromise on power or efficiency, making it an ideal choice for network environments where space and weight are considerations.
Key hardware specifications include:
-
- Input Voltage Type: AC, ensuring compatibility with standard electrical outlets.
- Number of Fans: 1, for efficient cooling and operational reliability.
- Compatibility: Specifically designed for the Catalyst 4948E Ethernet Switch, guaranteeing a seamless fit and performance.
Specs
| Item Number | Cisco PWR-C49E-300AC-R |
| Maker | Cisco |
| AC Input Voltage (Low-line) | Minimum 85 VAC, typically 120 VAC, up to 132 VAC maximum |
| AC Input Voltage (High-line) | Minimum 170 VAC, typically 230 VAC, up to 264 VAC maximum |
| Maximum AC Input Current at 100 VAC | 4 A |
| Maximum AC Input Current at 240 VAC | 2 A |
| AC Input Frequency Range | 47 Hz to 63 Hz |
| DC Output | 25 A at +12 VDC |
| Minimum Output Holdup Time | 20 ms |
| Power Rating | 0.375 kVA |
| Cooling Fan Airflow Orientation | From back to front |
| Mass | 2 pounds (0.9 kilograms) |
| Fan Count | 1 |
| Voltage Input Category | AC |
| Device Compatibility | Catalyst 4948E Ethernet Switch |
PWR-C49E-300AC-R
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Product Description
The PWR-C49E-300AC-R is a power supply unit designed specifically for the Catalyst 4948E Ethernet Switch, featuring an AC-input voltage range from 85 VAC (min) to 132 VAC (max) on low-line and 170 VAC (min) to 264 VAC (max) on high-line. It delivers a power supply output of 25 A @+12 VDC and maintains an output holdup time of 20 ms minimum, ensuring consistent performance. The unit is equipped with a single fan providing back to front airflow, operates within an AC-input frequency of 47 to 63 Hz, and has a kVA rating of 0.375 kVA.Key Feature for the PWRC49E300ACR
- What is the minimum AC-input voltage for low-line operation?
The minimum AC-input voltage for low-line operation is 85 VAC. - How does the power supply's input current change between 100 VAC and 240 VAC?
At 100 VAC, the maximum AC-input current is 4 A, and at 240 VAC, it reduces to 2 A maximum. - What frequency range does the power supply support?
The power supply supports a frequency range of 47 to 63 Hz. - What is the output capability of the power supply in terms of current and voltage?
The power supply outputs 25 A at +12 VDC. - What is the minimum output holdup time for the power supply?
The minimum output holdup time for the power supply is 20 ms. - Can you specify the kVA rating of the power supply?
The kVA rating of the power supply is 0.375 kVA. - What is the airflow direction for the power supply fan?
The airflow direction for the power supply fan is from back to front. - How much does the power supply weigh?
The power supply weighs 2 lb (0.9 kg). - How many fans are incorporated into the power supply?
There is 1 fan incorporated into the power supply. - Which Ethernet Switch is compatible with this power supply?
This power supply is compatible with the Catalyst 4948E Ethernet Switch.
Product Review
The Cisco PWR-C49E-300AC-R power supply supports a wide range of AC input voltages from 85 VAC to 264 VAC, accommodating various global electrical standards and ensuring reliable operation for the Catalyst 4948E Ethernet Switch. However, its output holdup time is limited to a minimum of 20 ms, which may be a concern for environments requiring longer power backup times during outages. Additionally, its single fan design with back-to-front airflow provides efficient cooling but could represent a single point of failure in critical network infrastructure.
Overview
The Cisco PWR-C49E-300AC-R is a power supply unit designed to support the Catalyst 4948E Ethernet Switch, ensuring a stable and reliable power source for network operations. This unit is an essential component for maintaining network uptime and efficiency, providing a direct AC power input and converting it to the necessary DC power needed by the switch.
Featuring a versatile input voltage range, the PWR-C49E-300AC-R accommodates both low-line and high-line AC inputs. For low-line conditions, it accepts an input voltage from 85 VAC (min) to 132 VAC (max), typically at 120 VAC nominal. For high-line conditions, the range extends from 170 VAC (min) to 264 VAC (max), with a nominal value of 230 VAC. This flexibility ensures the power supply can adapt to various power conditions around the world.
The unit's AC input current is rated at 4 A maximum when operating at 100 VAC, and it reduces to 2 A maximum at 240 VAC, optimizing power efficiency across different voltages. With an AC input frequency specification from 47 to 63 Hz, the PWR-C49E-300AC-R is compatible with a wide range of electrical standards, further enhancing its global usability.
Power output is another critical specification, with the unit capable of delivering 25 A at +12 VDC. This output is sufficient to support the operations of the Catalyst 4948E Ethernet Switch under various conditions. The power supply also features an output holdup time of 20 ms minimum, ensuring brief power interruptions won't disrupt switch operations.
The kVA rating of the PWR-C49E-300AC-R stands at 0.375 kVA, indicating the power supply's capacity in terms of voltage and current supplied to the connected device. This rating is a key factor in understanding the efficiency and capability of the power supply in supporting network hardware.
Cooling is managed by a single fan, utilizing a back-to-front airflow direction to maintain optimal operating temperatures. Effective cooling is crucial for maintaining the longevity and reliability of both the power supply and the network switch it supports.
Weighing in at just 2b (0.9 kg), the PWR-C49E-300AC-R is lightweight, facilitating easy installation and handling. Its compact design does not compromise on power or efficiency, making it an ideal choice for network environments where space and weight are considerations.
Key hardware specifications include:
-
- Input Voltage Type: AC, ensuring compatibility with standard electrical outlets.
- Number of Fans: 1, for efficient cooling and operational reliability.
- Compatibility: Specifically designed for the Catalyst 4948E Ethernet Switch, guaranteeing a seamless fit and performance.
Specifications
| Item Number | Cisco PWR-C49E-300AC-R |
| Maker | Cisco |
| AC Input Voltage (Low-line) | Minimum 85 VAC, typically 120 VAC, up to 132 VAC maximum |
| AC Input Voltage (High-line) | Minimum 170 VAC, typically 230 VAC, up to 264 VAC maximum |
| Maximum AC Input Current at 100 VAC | 4 A |
| Maximum AC Input Current at 240 VAC | 2 A |
| AC Input Frequency Range | 47 Hz to 63 Hz |
| DC Output | 25 A at +12 VDC |
| Minimum Output Holdup Time | 20 ms |
| Power Rating | 0.375 kVA |
| Cooling Fan Airflow Orientation | From back to front |
| Mass | 2 pounds (0.9 kilograms) |
| Fan Count | 1 |
| Voltage Input Category | AC |
| Device Compatibility | Catalyst 4948E Ethernet Switch |