Delta ESR-48/40AC Compact Switch-Mode Telecom Rectifier Module (-48V 40A 2000W)
Delta ESR-48/40AC -48V 40A 2000W compact telecom rectifier with short depth for tight enclosure installations.
DeltaModel: ESR-48/56AC
Delta ESR-48/56AC High-Efficiency Switch-Mode Telecom Rectifier Module (-48V 56A 3000W)
The Delta ESR-48/56AC is a carrier-grade high-frequency switch-mode telecom rectifier module delivering nominal -48V DC, 56A maximum output current, and 3000W rated power across a wide AC input voltage range.
Pricing is confirmed by project configuration and quantity
Request a quote- Nominal Output Voltage
- -48V DC (Adjustable: -42V to -58V)
- Rated Output Current
- 56A
- Rated Output Power
- 3000W
- AC Input Voltage Range
- 88V to 300V AC (Nominal 220V/230V)
- Operating Temperature Range
- -25°C to +65°C
- Cooling & Form Factor
- Smart Fan Forced Air / Subrack Hot-Swap
What this product is
What this product is
This module slots into Delta telecom DC power subracks, converting incoming single-phase utility or generator AC power into low-ripple -48V DC power to drive base station equipment and charge backup batteries.
What problem it solves
Eliminates low power conversion efficiency, high input harmonic distortion, and nuisance tripping during utility voltage sags, ensuring high power factor and grid tolerance.
Who and where it is for
Engineered for wireless macro cell sites, microwave transmission hubs, core switching offices, and industrial power distribution systems utilizing Delta subracks.
Core advantages
- High-Efficiency Power Conversion: Typical efficiency exceeds 92%, substantially reducing site utility costs and cooling requirements.
- Ultra-Wide AC Input Range: Operates reliably across 88V to 300V AC, withstanding severe grid voltage drops in remote regions.
- Hitless Hot-Plug Maintenance: Supports live insertion and removal without interrupting continuous -48V DC bus power delivery.
- Active Digital Current Sharing: Autonomous load sharing across multiple parallel modules ensures uninterrupted N+1 redundancy.
Technical specifications
| Key specifications | Value |
|---|---|
| Nominal Output Voltage | -48V DC (Adjustable: -42V to -58V) |
| Rated Output Current | 56A |
| Rated Output Power | 3000W |
| AC Input Voltage Range | 88V to 300V AC (Nominal 220V/230V) |
| Operating Temperature Range | -25°C to +65°C |
| Cooling & Form Factor | Smart Fan Forced Air / Subrack Hot-Swap |
Applications
01
4G/5G Telecom Cell Sites & Distributed Power Systems
02
Carrier Core Network Facilities & IDC DC Plants
03
Industrial Automation & Utility Substation DC UPS
Frequently asked questions
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