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0-57491 | Reliance Electric Rack-Mounted DC Power Supply Module
- Regular price
- $2,754.00
- Sale price
- $2,754.00
- Regular price
-
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Product Description P/N: 0-57491
Description
The Reliance Electric 0-57491 is a power supply module designed to convert 115 VAC input power into regulated DC voltages for rack-based control systems. It supports stable operation of processor and memory modules through controlled startup and power-fail handling. The 0-57491 is used in industrial control racks where dependable DC power distribution is required.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Reliance Electric |
| Category | Power Supplies |
| Part Number | 0-57491 |
| Subcategory | Power Supply |
| Input Voltage | 115 VAC |
| Output Power | 275 W |
| Output Voltage | 55 VDC |
| Output Current | 5 A at 55 VDC |
| Soft Start Function | Yes |
| Power Fail Interrupt | Generated ≥ 3 ms before DC loss |
| Holdover Time | 20 ms on AC input loss |
| Battery Backup Support | Yes |
| Memory Retention Voltage | 5 VDC (backup-dependent) |
| Minimum Backup Voltage | 3.0 VDC |
| Reset Method | Front panel keyswitch (PROGRAM position) |
| Mounting Type | Rack-mounted module |
Information About 0-57491
The 0-57491 is a DC power supply module manufactured by Reliance Electric for use in modular rack-based control systems. It converts incoming 115 VAC power into regulated DC outputs required by logic, processor, and memory modules installed within the rack. The module incorporates a soft-start mechanism that gradually raises output voltage to prevent electrical stress during power-up. It is typically deployed in industrial automation systems where controlled startup, power monitoring, and memory preservation are essential.
Key Features:
- AC to DC power conversion: Converts 115 VAC input into regulated DC voltages for rack modules.
- Soft start operation: Gradually increases output voltage to ensure stable logic initialization.
- Power fail interrupt generation: Signals impending power loss at least 3 ms before DC regulation drops.
- Holdover capability: Maintains regulated output for up to 20 ms after AC input loss.
- Battery backup support: Preserves volatile processor and common memory during power interruptions.
- Manual reset protection: Requires keyswitch reset after memory loss to ensure controlled restart.
The 0-57491 delivers the reliability and precision required for regulated DC power distribution and system protection in Reliance Electric rack-based industrial control systems.
Description
The Reliance Electric 0-57491 is a power supply module designed to convert 115 VAC input power into regulated DC voltages for rack-based control systems. It supports stable operation of processor and memory modules through controlled startup and power-fail handling. The 0-57491 is used in industrial control racks where dependable DC power distribution is required.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Reliance Electric |
| Category | Power Supplies |
| Part Number | 0-57491 |
| Subcategory | Power Supply |
| Input Voltage | 115 VAC |
| Output Power | 275 W |
| Output Voltage | 55 VDC |
| Output Current | 5 A at 55 VDC |
| Soft Start Function | Yes |
| Power Fail Interrupt | Generated ≥ 3 ms before DC loss |
| Holdover Time | 20 ms on AC input loss |
| Battery Backup Support | Yes |
| Memory Retention Voltage | 5 VDC (backup-dependent) |
| Minimum Backup Voltage | 3.0 VDC |
| Reset Method | Front panel keyswitch (PROGRAM position) |
| Mounting Type | Rack-mounted module |
Information About 0-57491
The 0-57491 is a DC power supply module manufactured by Reliance Electric for use in modular rack-based control systems. It converts incoming 115 VAC power into regulated DC outputs required by logic, processor, and memory modules installed within the rack. The module incorporates a soft-start mechanism that gradually raises output voltage to prevent electrical stress during power-up. It is typically deployed in industrial automation systems where controlled startup, power monitoring, and memory preservation are essential.
Key Features:
- AC to DC power conversion: Converts 115 VAC input into regulated DC voltages for rack modules.
- Soft start operation: Gradually increases output voltage to ensure stable logic initialization.
- Power fail interrupt generation: Signals impending power loss at least 3 ms before DC regulation drops.
- Holdover capability: Maintains regulated output for up to 20 ms after AC input loss.
- Battery backup support: Preserves volatile processor and common memory during power interruptions.
- Manual reset protection: Requires keyswitch reset after memory loss to ensure controlled restart.
The 0-57491 delivers the reliability and precision required for regulated DC power distribution and system protection in Reliance Electric rack-based industrial control systems.