Description
The GE IS400JPDHG1ABB / IS410JPDHG1A is a JPDH High-Density Power Distribution Board used in GE Mark VIe and Mark VIeS turbine control systems. Its primary function is to distribute 28 VDC power to multiple Mark VIe I/O packs and Ethernet switches from a common DC power source. GE documentation confirms the IS410JPDHG1A as a Mark VIeS power-distribution module.
The JPDH design allows multiple boards to be connected in a daisy-chain arrangement when additional I/O power capacity is required. Individual I/O-pack output circuits use positive-temperature-coefficient protection devices to help isolate an overloaded branch without taking down the complete distribution system.
🔧 Key Features
• GE Mark VIe / Mark VIeS power distribution
• High-density JPDH architecture
• 28 VDC input power distribution
• Supports up to 24 Mark VIe I/O packs
• Provides power for up to 3 Ethernet switches
• Three independent R/S/T power feeds for redundant applications
• PTC protection on individual I/O-pack circuits
• Daisy-chain capability for additional JPDH boards
• DIN-rail mounting
• Convection cooled
📋 Product Datasheet
• Brand: GE General Electric
• Model: IS410JPDHG1A
• Associated Assembly: IS400JPDHG1ABB
• Product Type: High-Density Power Distribution Board
• Series: Mark VIe / Mark VIeS
• Main Function: 28 VDC power distribution
• Input Voltage: 28 VDC
• I/O Pack Capacity: Up to 24
• Ethernet Switch Capacity: Up to 3
• Power Inputs: R / S / T three-feed arrangement
• Output Protection: PTC branch protection
• Mounting: DIN rail
• Cooling: Natural convection
• Operating Temperature: -40 to +70 °C for the documented Mark VIeS module
• Storage Temperature: -40 to +85 °C
• Humidity: Up to 95%, non-condensing
• Dimensions: Approx. 16.5 × 15.2 × 11.4 cm
• Weight: Approx. 1.0 kg*
• Country of Origin: USA*
GE’s Mark VIeS documentation gives the IS410JPDHG1A dimensions as approximately 16.5 × 15.2 × 11.4 cm, with DIN-rail mounting, convection cooling, and an ambient operating range of -40 to +70 °C.
🏭 Typical Applications
The JPDH is used in:
• Gas turbine control systems
• Steam turbine control systems
• Power generation plants
• GE Mark VIe turbine cabinets
• Mark VIeS safety systems
• Distributed I/O architectures
• Industrial Ethernet control cabinets
⚡ Functional Description
The JPDH receives a 28 VDC supply and distributes power to the individual I/O packs. The board provides 24 dedicated I/O-pack output circuits, arranged across the R, S, and T feeds. Three additional unfused output circuits are provided for Ethernet switches.
Each I/O-pack branch incorporates a positive-temperature-coefficient protection device. This arrangement helps provide localized branch protection while keeping the remaining I/O distribution available.
🔌 Installation & Configuration
• Verify the complete part number and revision
• Confirm the Mark VIe or Mark VIeS cabinet configuration
• Check the incoming 28 VDC supply
• Verify R/S/T redundant power wiring where applicable
• Mount the JPDH on the designated DIN rail
• Connect I/O-pack power cables according to the cabinet drawings
• Connect Ethernet-switch power outputs where required
• Check branch protection devices
• Restore power and inspect the system for faults
🛠️ Commissioning Checklist
• Confirm 28 VDC input voltage
• Check all three redundant feeds where applicable
• Verify I/O-pack power distribution
• Check Ethernet-switch power outputs
• Inspect for branch overload indications
• Confirm connected I/O packs start normally
• Check Mark VIe system diagnostics
• Verify redundant power operation
• Perform final cabinet functional testing
⚠️ Replacement Note
The part-number relationship should be checked carefully. IS410JPDHG1A is the GE Mark VIeS replacement/module designation, while IS400JPDHG1ABB appears in industrial listings as the associated Mark VIe JPDH assembly. Both are described as high-density power-distribution hardware, but the exact hardware revision and system generation should be matched before replacement.
📦 Ordering Information
GE IS400JPDHG1ABB | IS410JPDHG1A | JPDH High-Density Power Distribution Board | Mark VIe / Mark VIeS | 28 VDC
Weight and country-of-origin information marked with an asterisk are reference values from secondary listings. For critical turbine-control replacement, verify the nameplate, hardware revision, cabinet configuration, and GE system documentation before installation.
