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TECHNICAL SPECIFICATIONS
Part Number: IS220JPDHG1A
Manufacturer: General Electric (GE)
Series: Mark VIe
Functional Acronym: JPDH
Product Type: High-Density Power Distribution Module
Input Voltage Capacity: 28 V dc Nominal
Input Connection Standard: One 6-pin Mate-N-Lok connector (Up to 13 A / 600 V)
Total Supported Outputs: 24 I/O Packs and 3 Ethernet Switches
I/O Pack Feeds: 24 x 2-pin Mate-N-Lok connectors (Divided as JT1–JT8, JR1–JR8, JS1–JS8)
Ethernet Switch Feeds: 3 x customized 2-pin Mate-N-Lok connectors
Maximum Current Rating: 13 A per pin (Main) / 0.8 A max per I/O pack circuit
Circuit Branch Protection: Self-recovering Positive Temperature Coefficient (PTC) poly-fuses
Expansion Architecture: Supports Daisy-Chain connection layout
Form Factor / Mounting: DIN-rail or Direct Vertical Surface Mount
Ambient Operating Temperature: -30°C to +65°C -22°F to +149°F
Compliance Standards: UL 508A / CSA 22.2 No. 14 Industrial Control Panel Ratings
Repair Lead Time: 3-5 Business Days
Availability: In Stock
Country of Origin: United States
Manual Reference: GEH-6721G
The IS220JPDHG1A is a High-Density Power Distribution Module designed and manufactured by General Electric for the Speedtronic Mark VIe Distributed Control System platform. The High-Density Power Distribution (JPDHG1A) board provides 28 V dc power to 24 Mark VIe I/O packs and 3 Ethernet switches from a 28 V dc supply. Additional JPDHs can be connected in a daisy-chain arrangement to provide power to more I/O packs as required. The circuit for each I/O pack connector is protected with a positive temperature coefficient fuse device.
POWER ENTRY AND TOPOLOGY EXTENSION
The physical architecture of the assembly features a dense matrix of 29 integrated female pin plug connectors. Primary input voltage enters the card via a single heavy-duty 6-pin Mate-N-Lok connection standard capable of withstanding voltage thresholds up to 600 V and handling up to 13 A of primary current. For large-scale industrial topologies requiring expanded hardware footprints, the power distribution design natively supports a daisy-chain arrangement. Control power buses can be extended from an extension connector directly to a secondary JPDH board via a jumper system, allowing scalable control power distribution without overloading localized main panel circuits.
FAULT ISOLATION AND MATRIX PROTECTION
To prevent localized component failures or field faults from destabilizing the entire control loop, the card integrates a rigorous branch circuit protection mechanism across its output matrix. Each 2-pin I/O pack connector is equipped with an independent, self-recovering Positive Temperature Coefficient (PTC) poly-fuse device. In the event of an overcurrent condition or localized circuit malfunction, the PTC component automatically limits current throughput, effectively insulating the rest of the distribution module. Once the electrical fault is cleared, the poly-fuse resets, restoring optimal current limits to the protected I/O block and ensuring long-term operational continuity.
INSTALLATION:
Mount JPDHG1A on a vertical surface by inserting #6 machine screws through the mounting holes at each corner of the board. Insert Mate-N-Lok connectors as described in the following figure. The 6-pin and larger 2-pin connectors have a nominal rating of 600 V and 13 A, while the smaller two-pin connectors have a nominal rating of 600 V and are limited by fuse rating to 0.8 A max. JPDH has 24 identical output circuits to provide power to the individual I/O packs. The R, S, and T feeds each provide power to eight circuits. Each I/O pack circuit includes a positive temperature coefficient fuse device for branch circuit protection. The board also has three identical unfused output circuits to provide power to each Ethernet switch.
OPERATION:
JPDHG1A is designed to provide TMR I/O packs with adequate 28 V dc power distribution while taking up as little space as possible. Additional JPDHs can be connected in a daisy-chain arrangement through the unfused J1X connector. The user must provide suitable branch-circuit protection when connecting multiple JPDHs. Each pin is rated at 13 A. The 6-pin J1 connector brings in three separate 28 V dc feeds on three different pins for triple redundancy. The return current is common among the TMR and daisy- chain feeds and is brought in on the remaining three pins. The following figure shows how JPDH distributes the R, S, and T 28 V dc power to the I/O packs and Ethernet switches.
WHY PARTNER WITH WORLD OF CONTROLS
World of Controls specializes in supplying high-quality, warranty-backed OEM replacement parts, including unused surplus and professionally rebuilt components for critical turbine control and industrial automation systems like the General Electric Mark VIe platform. To minimize customer downtime and ensure original equipment standard compliance, every component undergoes rigorous inspection, testing, and verification in an advanced electronics lab. Beyond parts distribution, the company delivers comprehensive, global support through 24/7 technical assistance, expert troubleshooting, component repair services, and rapid shipping, ensuring optimal efficiency and long-term reliability for critical industrial operations worldwide.
What is the GE IS220JPDHG1A?
It is a Mark VIe Series High Density Power Distribution (JPDH) module that accepts a nominal 28 V dc input and distributes it to 24 I/O packs and 3 Ethernet switches.
What type of branch protection is used?
Each 2-pin output feed is protected by an independent, self-recovering Positive Temperature Coefficient (PTC) poly-fuse to isolate overcurrent faults.
Can the power distribution be expanded?
Yes, the module features a daisy-chain expansion architecture, allowing the 28 V dc power bus to bridge across multiple boards via extension connectors.
What are the primary connector specifications?
Main power entry uses a 6-pin Mate-N-Lok connector (up to 13 A / 600 V), while branch outputs use 2-pin Mate-N-Lok connectors limited to 0.8 A max per circuit.
What mounting options and standards are supported?
It supports DIN-rail or direct vertical surface mounting and complies with UL 508A and CSA 22.2 No. 14 industrial control panel standards.
