Vertiv Emerson ER11040/T5 Genuine Telecom Hardware Studio Photo 3
VertivModel: Emerson ER11040/T5

Emerson Vertiv ER11040/T5 Utility Power Rectifier Charger Module (380VAC to 110VDC 40A Natural Cooling)

Emerson (Vertiv) ER11040/T5 is an industrial-grade switch-mode rectifier and battery charger module engineered for electrical utility substations, stepping down 3-phase 380VAC to regulated 110VDC at 40A for switchgear tripping and relay protection.

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3-Phase AC Input Voltage Range
3-Phase 323VAC ~ 475VAC (Nominal 380VAC)
Nominal DC Output Voltage
90VDC ~ 140VDC (Nominal 110VDC Regulated)
Rated Constant Output Current
40A Rated Constant DC Output
Rated Output Power
4400W Utility Rated Output Power
Cooling Architecture
Natural Convection / Silent Internal Airflow
Power Conversion Efficiency
≥93.0% High-Frequency Utility Efficiency

What this product is

What this product is

Core rectifier and battery charger for high-voltage substation DC auxiliary power systems.

What problem it solves

Ensures uninterrupted operating power for circuit breaker trip coils and protection relays under severe substation electromagnetic transients.

Who and where it is for

High-voltage electrical substations (110kV-500kV), power generation plants, and railway traction substations.

Core advantages

  • 3-phase balanced input without neutral wire, delivering power factor above 0.94
  • Heavy-duty galvanic isolation and high EMC immunity against substation transients
  • Autonomous digital current sharing with imbalance below 3%
  • Dust-resistant internal airflow thermal design ensuring prolonged MTBF

Technical specifications

Key specificationsValue
3-Phase AC Input Voltage Range3-Phase 323VAC ~ 475VAC (Nominal 380VAC)
Nominal DC Output Voltage90VDC ~ 140VDC (Nominal 110VDC Regulated)
Rated Constant Output Current40A Rated Constant DC Output
Rated Output Power4400W Utility Rated Output Power
Cooling ArchitectureNatural Convection / Silent Internal Airflow
Power Conversion Efficiency≥93.0% High-Frequency Utility Efficiency

Applications

01

Circuit breaker trip and closing coil operating power supplies

02

Auxiliary power for substation protective relays and RTU telemetry units

03

Float and boost charging for 110V industrial stationary battery banks

04

DC control power systems in electric rail traction substations

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