ABB 5SHY35L4510 IGCT Press-Pack – Built for Dependable Switching in Medium-voltage Power Converters

• Press-pack reliability – Fail-safe short-circuit mode and uniform thermal path are preferred in MV stacks.

• Low on-state losses – Typically lower conduction loss than comparable IGBT solutions for steady heavy-load duty.

• High di/dt and dv/dt handling – Suited for cycloconverters, large drives, and grid-support converters.

• 4.5 kV-class device – The L45xx designation aligns with ABB’s 4.5 kV voltage class IGCT family.

• Service-friendly – Press-pack form factor simplifies replacement without reworking busbars in many cases.

• Matched to ABB gate units – Works with dedicated IGCT gate drivers for fast, clean turn-off.

• Traceability and documentation – ABB’s labeling and lot data make quality audits straightforward.

• Medium-voltage drives for cement, mining, steel, and marine propulsion

• Grid support and FACTS equipment (STATCOM, SVC) where robust switching is needed

• High-power rectifier/inverter bridges, cycloconverters, and soft-start solutions

• Traction power converters and heavy industrial energy conversion systems

One thing I appreciate is how the 5SHY35L4510 behaves in long-duty applications with frequent thermal cycles — press-pack contact and even pressure distribution seem to keep performance consistent over time, assuming the clamp force is set correctly.

• Reliability under stress – Press-pack construction manages thermal and electrical stress better in many MV stacks.

• Compatibility – Pairs with ABB IGCT gate units and standard clamps, reducing engineering effort in retrofits.

• Lifecycle cost – Lower conduction losses and predictable failure mode can translate to fewer unplanned outages.

• Support – Availability of application notes and proven references speeds up commissioning and service.

A maintenance supervisor at a mill summarized it well: “Once we corrected the clamp force and airflow path, we stopped seeing nuisance trips — the IGCT stack just ran.”

• IGCT Gate Driver Unit (GDU) – Dedicated fast gate unit for 4.5 kV-class IGCTs; provides high di/dt turn-off capability and diagnostic signaling.

• Press-Pack Clamping Assembly – Spring or hydraulic clamp calibrated to the required axial force; includes insulated posts and force indicators.

• Snubber Network – Film snubber capacitors with damping resistors to shape dv/dt and protect during commutation.

• Fiber-Optic Trigger Link – For noise-immune control from the converter protection/control board to the GDU.

• Heatsinks / Cold Plates – Air-cooled extrusions or liquid-cooled plates sized for the IGCT’s thermal impedance and duty cycle.

• Manufactured by ABB under ISO 9001 quality systems

• RoHS-compliant component (typical for ABB IGCT families)

• CE/UL apply at equipment level; bare semiconductors typically are not CE-marked

• Warranty: 365 days (repair/replace policy aligned with inspection findings)

If you’re confirming a direct replacement, share your stack position, gate unit type, cooling method, and any historic fault logs. It usually saves a round of emails and helps us ship the right unit faster.