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ABB KVC758A 3BHE021951R0124 High-Frequency Power Supply Module

Brand/Manufacturer: ABB

Order Number: KVC758A 3BHE021951R0124

Type: High-Frequency Power Supply Module

Country of Origin: Sweden

Condition: Original Brand

Lead Time: Available in stock

Payment Term: 100% TT In Advance

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Description

Product Description

The ABB 3BHE021951R0124 (Type Designation: KVC758A) is a highly specialized, microprocessor-controlled power supply module engineered for critical control and excitation systems. Driven by an onboard 32-bit processor and equipped with non-volatile FRAM memory, this compact board converts wide-range low-voltage DC inputs into a highly stabilized, nominal 220V operating rail via a 30 kHz high-frequency switching loop. 

Technical Specifications

  • Manufacturer: ABB

  • Model Designation: KVC758A

  • Part Number / Ordering ID: 3BHE021951R0124

  • Hardware Classification: Intelligent Switching Power Supply Card

  • Onboard Processor: High-performance 32-bit microprocessor

  • Memory Architecture: 512 kB Ferroelectric RAM (FRAM) for non-volatile configuration logging

  • Input Voltage Window: DC 9V to 36V wide-range input spectrum

  • Nominal Operating Voltage Output: 220 V DC regulated rail

  • Switching/Output Frequency: 30 kHz nominal high-frequency conversion

  • Galvanic Isolation Threshold: 1500 V DC circuit-to-circuit isolation barrier

  • Operational Ambient Temperature: +5°C to +55°C continuous system environment

  • Storage Thermal Constraints: –40°C to +70°C non-operational limits

  • Physical Module Dimensions: Approximately 11.8 cm x 8.5 cm x 3.5 cm (Estimated shipping profile)

  • Net Hardware Mass: 0.2 kg (0.44 lbs) ultra-compact board layout

  • International Tariff Code: 8537101190

  • Country of Origin: Sweden

Industrial Application Scenarios

  • Excitation Control Panel Infeed: Provides stable, isolated control voltage to internal logic boards within high-power synchronous generator excitation units.

  • High-Voltage Rectifier Regulation: Delivers precise switching power to gate-firing circuits, isolating low-voltage microprocessors from high-power electric currents.

  • Substation Grid Telemetry: Powers remote grid diagnostic and data tracking nodes, keeping communication lines live during shifting battery voltage swings.

  • Critical System Standby Sparings: Drops into compact system subracks as a direct replacement component to maintain plant communication and control safety.

  • Focus on Benefits:

    We focus on what truly matters to industrial buyers — authentic products, reliable stock, and fast global delivery. Explore how we support your operations with trusted sourcing and expert service.

  • Hard-to-Find & Obsolete Parts:

    We specialize in sourcing rare and discontinued industrial automation components that others can't deliver.

  • Large In-Stock Inventory:

    Thousands of genuine parts ready for immediate shipping — reduce downtime and keep operations running smoothly.

  • Fast Response · Global Delivery:

    Get a quote within hours. We ship worldwide with express options to meet urgent demands.

  • Original Products · 1-Year Warranty:

    All parts are factory-sealed and 100% original. Covered by a 1-year warranty and 30-day return support.

  • Why You Can Trust Us:

    We go beyond parts — delivering reliability, speed, and expertise trusted by industrial buyers worldwide.

  • DcsSupplier Limited

    Trusted by Global Clients

    Serving thousands of companies across oil & gas, power, manufacturing, and more — from Fortune 500 enterprises to local distributors.

  • DcsSupplier Limited

    Uptime Is Our Priority

    Downtime is costly. That’s why we ensure rapid access to critical parts, minimizing production interruptions and delays.

  • DcsSupplier Limited

    Experts in Sourcing Rare Parts

    Our team specializes in finding hard-to-source and obsolete components — saving you time, risk, and procurement headaches.

  • DcsSupplier Limited

    One-Stop Automation Supply

    We offer complete automation part solutions — PLCs, drives, sensors, HMIs, relays — with expert guidance every step of the way.

Testimonials

Fast Delivery, Excellent Quality


We’ve worked with IndustriaX Limited on several urgent orders for automation components. Their ability to provide original, factory-sealed parts with full documentation—often from in-stock inventory—has significantly reduced our downtime. The delivery is consistently fast, and their logistics team is highly responsive. IndustriaX has become one of our most trusted global suppliers for industrial spare parts.

- Sarah Johnson

Reliable Partner for Original Parts


Finding authentic automation parts has always been a challenge, especially for discontinued models. IndustriaX Limited has impressed us with their genuine stock, clear product traceability, and prompt updates. We’ve verified their shipments against OEM specs multiple times, and the results are flawless. They’re now our preferred sourcing partner for critical systems.

- David Smith

Professional Service with After-Sales Support

"IndustriaX Limited doesn’t just ship products—they provide solutions. When we encountered installation issues with one of the modules, their technical team replied in less than 4 hours and provided wiring guides and troubleshooting tips. This level of post-sale support is rare in the spare parts sector. Their professionalism gives us confidence in every order."

- Emily Brown

Trusted Source for Industrial Automation Spares


We've tested multiple suppliers over the years, but IndustriaX Limited consistently stands out. Their product catalog is extensive, their team is knowledgeable, and they understand the urgency of industrial needs. With every order, we receive timely updates, fast delivery, and 100% genuine products. It’s rare to find such consistency and reliability in this field.

- Michael Anderson