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    The
    ABB DD370a (Part Number GJR2237400R1) is a high-power Diode Module (Diode Modul) typically used in industrial automation, power electronics, and high-current rectifier applications. 
    Key Specifications (DD370a GJR2237400R1) 
    • Manufacturer: ABB
    • Model: DD370a / GJR2 237400 R1
    • Type: Diode Module (Air-cooled)
    • Current Rating (
      IFAVMcap I sub cap F cap A cap V cap M end-sub
      𝐼𝐹𝐴𝑉𝑀
      ):
      300A – 370A
    • Voltage Rating (
      VRRMcap V sub cap R cap R cap M end-sub
      𝑉𝑅𝑅𝑀
      ):
      1300V - 1600V
    • Surge Current (
      IFSMcap I sub cap F cap S cap M end-sub
      𝐼𝐹𝑆𝑀
      ):
      8kA (10ms)
    • Operating Temperature: -25°C to +70°C
    • Country of Origin: Sweden 
    Key Features & Applications 
    • High Power Rectification: Used as input rectifiers for large AC drives, particularly in older or specialized industrial drive systems (such as SAMI GS).
    • Construction: Semiconductor diodes are mounted on air-cooled heatsinks with copper busbar connections, often utilizing "plasma containment" protection.
    • Compatibility: Designed for high-current, industrial-grade power supply units. 
    Where to Find Technical Documentation 
    As this is a component of older ABB drive systems, specific datasheets are often found through industrial automation suppliers. 
    • Supplier Listing (Amikon/Anvex): The component is generally available through specialists in obsolete or spare parts for ABB/BBC (e.g., Amikon, Anvex).
    • ABB Support: For technical data regarding high-power semiconductors or older rectifier types, searching on new.abb.com or library.abb.com for "Diode Supply Sections" or "High Power Rectifiers" is recommended. 
    Note: The product is also referred to as BBC GJR2 237400 R1 DD 370a in some contexts, indicating its legacy in BBC/ABB systems. 
    • BBC GJR2 237400 R1 DD 370a Diode Module DD370a ...
      Automation technology. Automation technology. BBC GJR2 237400 R1 DD 370a Diode Module DD370a GJR2237400R1 used. BBC GJR2 237400 R1...
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    • Diode rectifiers for DC traction substations - ABB
      Individual silicon diodes are mounted on an air-cooled heat- sink having adequate heat dissipation properties. Such diode with dou...
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    • DD370a GJR2237400R1 From ABB | Diode Modul - Amikong
      ... pdf, csv). Get a Quote. For more information on how your data is processed and stored by Amikong please read our privacy polic...
      https://www.amikong.com
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    • BBC GJR2 237400 R1 DD 370a Diode Module DD370a ...
      Automation technology. Automation technology. BBC GJR2 237400 R1 DD 370a Diode Module DD370a GJR2237400R1 used. BBC GJR2 237400 R1...
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    • Diode rectifiers for DC traction substations - ABB
      Individual silicon diodes are mounted on an air-cooled heat- sink having adequate heat dissipation properties. Such diode with dou...
      ABB
    • DD370a GJR2237400R1 From ABB | Diode Modul - Amikong
      Product Information. Product Describe. Input Voltage:24V DC nominal. Input Current:3-8mA per channel. Isolation:1500V AC (field to...
      https://www.amikong.com
    • DD370a GJR2237400R1 From ABB | Diode Modul - Amikong
      ... pdf, csv). Get a Quote. For more information on how your data is processed and stored by Amikong please read our privacy polic...
      https://www.amikong.com
    • Technical data High Current Rectifiers (HCR) - ABB
      Main technical features ... Semiconductor and fuses are cooled on both sides by high efficiency cooling boxes. Except the joint to...
      new.abb.com
    • ABB DD370A Diode Module - Amikon Limited
      ABB DD370A Diode Module * ABB. * USA. * xiamen,China. * ABB. * DD370A.
      www.amikonplc.com
    • ACS880-307 diode supply units - ABB
      Technical data * Up to 5446 kVA. wide power range all the way from 55 kVA. * Up to 690V. wide voltage range all the way from 380. ...
      ABB
    • Diode Supply Sections 140 to 5200 kVA ACS 600 User's Manual - ABB
      * GENERAL MANUALS. *Safety and Product Information EN 63982229 • Complete general Safety Instructions • Technical data for DSU and...
      library.e.abb.com
    • The DatasheetArchive - Datasheet Search Engine
      * 1.1. * ITGQ = 370 A. * Standard spec. 5152 8891. * VDRM = 1300 V. * Code: 3AFE 61197711 (ABB P/N 61197711) * Old code. * Manufac...
      DatasheetArchive
    • SAMI GS - ABB
      Mar 28, 1995 — * 1 How to Use This Manual...................................................................... ... * 2 Delivery Checks .........
      ABB
    • High power rectifier diodes - Iconopower Ltd.
      * ABB Semiconductors' reliable high- power rectifier diodes for demanding applications in industry and traction. * - Reverse repet...
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    Input Voltage:24V DC nominal. Input Current:3-8mA per channel. Isolation:1500V AC (field to logic) Response Time:<1ms (ON/OFF) Number of Channels:32Read more
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    ABB DD370a GJR2237400R1 Diode Module · Brand : ABB · Part Number : DD370a GJR2237400R1 · Weight : 0.1kg · Dimension : 1.5x19.7x14.7cm · Country of Origin : SWEDEN.Read more
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