ABB 5SHX14H4510 – High-Current Thyristor Module for HVDC & Industrial Power Control

If you’re working on high-voltage DC transmission systems or large-scale rectifier setups, the ABB 5SHX14H4510 isn’t just another thyristor—it’s a workhorse built for reliability under heavy electrical stress. From my experience supporting power infrastructure projects, this module tends to show up in applications where downtime isn’t an option and thermal stability matters more than specs on paper.

Key Features

• 6500V blocking voltage – Handles extreme voltage transients typically seen in HVDC converter stations, which makes it suitable for long-distance transmission interconnects.
• 1400A average on-state current (ITAV) – Delivers consistent performance under continuous load; one thing I appreciate is how well it manages heat buildup when paired with proper cooling.
• Press-pack design – Eliminates bonding wires and improves mechanical robustness, especially useful in environments with vibration or frequent thermal cycling.
• Designed for series stacking – Frequently used in multi-module configurations where voltage sharing and gate triggering precision are critical.
• Compatible with ABB’s proprietary triggering systems – Works seamlessly with their digital firing units, though integration with third-party controllers may require additional snubber tuning.

Technical Specifications

Application Fields

This module pops up most often in high-power scenarios—think grid-level static VAR compensators (SVCs), HVDC valve halls, large industrial drives for rolling mills, and mining equipment rectifiers. In many cases, it’s chosen over discrete solutions because of its proven mean time between failures (MTBF) in harsh electromagnetic environments. You might notice that some retrofit projects still source these even after newer models launch, simply due to legacy system compatibility.

Advantages & Value

Procurement teams tend to favor this model not because it’s the cheapest, but because it reduces long-term risk. The failure rate in properly cooled installations is impressively low—typically less than 0.1% per year in stable conditions. Spare planning becomes easier since ABB has maintained form-fit compatibility across several generations. Also worth noting: technical documentation is thorough, and firmware tools (for test triggering) are still supported, which helps during commissioning.

Installation & Maintenance

Mounting requires a flat, thermally conductive surface—usually aluminum oxide ceramic-insulated baseplates. Use of torque-limited bolts and recommended pressure pads is essential; uneven clamping can lead to hotspots. Ventilation should allow for natural or forced convection depending on ambient temperature. One caveat: always verify insulation resistance before energizing, especially if stored in humid conditions. For maintenance, periodic inspection of cooling fins and cleaning of dust buildup goes a long way. While there’s no user-serviceable part inside, recording thermal cycles and surge events helps predict end-of-life behavior.

Quality & Certifications

Certified to IEC 60747-6 standards for semiconductor devices. Compliant with CE, UL recognition (via system-level certification), and RoHS directives. Manufactured under ISO 9001-controlled processes. Unit comes with a 365-day warranty—covers defects in materials and workmanship, excluding damage from improper installation or overvoltage events.

Our Order Placement Process & Guarantees

• Warranty: 365 days from date of delivery
• Delivery time: 1 week for in-stock units; maximum 4 weeks if requiring shipment from regional warehouse
• Payment method: 50% advance payment, balance due before dispatch
• Express delivery: FedEx, UPS, or DHL—tracking provided upon shipment