Ferraz Shawmut 27x60 URGD Semiconductor Fuses (600V-690V)

Sourcing direct replacement protection devices for aging industrial drives and rectifiers can jeopardize facility uptime if original components are categorized as discontinued globally. However, we consistently stock and supply genuine Ferraz Shawmut 27x60 URGD Protistor Fuses—ensuring the uninterrupted operation of heritage system architectures without costly equipment retrofits.

Product Overview

The Ferraz Shawmut (now Mersen) URGD ferrule fuse series (27x60 mm) boasts an extremely high breaking capacity, engineered specifically to effectively shield ultra-sensitive power semiconductors. Rigorously vetted to stringent VDE and IEC 60269.4 standards, these aR-class limiters instantly isolate short-circuit faults while confining heavy system overload and minimizing total let-through thermal current (I²t).

Typical Applications

  • High-speed short-circuit protection for thyristors, discrete diodes, and triac components.
  • Safeguarding of complex high-power rectification frames and AC/DC converter circuits.
  • Direct maintenance replacements inside OEM inverters, motor soft-starters, and VFDs.
  • Protection of solid-state relays integrated into industrial heat controls and UPS systems.

Key Features & Benefits

  • Tested Breaking Capacity: Performs reliably up to 200 kA at rated voltage parameters.
  • Integrated Trip Monitoring: Equipped with an active trip-indicator to streamline visual fault tracking inside cabinets.
  • Versatile Electrical Spectrum: Covers robust industrial load requirements from 63 A through 250 A.
  • Standardized Protection Profile: Complies precisely with safety class definitions set by VDE 636-23 and strict IEC international regulations.

Available Legacy Catalog Guide

Type URGD — 600 V to 690 V AC (With Trip-indicator)

27x60 mm Ferrule format • 63 A to 250 A • Tested Breaking Capacity: 200 kA

Catalog Number Voltage Current Designation Action
FR27UD69V63T Ref: A076820 690 V 63 A 6.921 CP URGD 27x60/ 63 REQUEST QUOTE
FR27UD69V80T Ref: B076821 690 V 80 A 6.921 CP URGD 27x60/ 80 REQUEST QUOTE
FR27UD69V100T Ref: C076822 690 V 100 A 6.921 CP URGD 27x60/100 REQUEST QUOTE
FR27UD69V125T Ref: D076823 690 V 125 A 6.921 CP URGD 27x60/125 REQUEST QUOTE
FR27UD69V160T Ref: E076824 690 V 160 A 6.921 CP URGD 27x60/160 REQUEST QUOTE
FR27UD69V200T Ref: F076825 690 V 200 A 6.921 CP URGD 27x60/200 REQUEST QUOTE
FR27UD60V250T Ref: W076264 600 V 250 A 621 CP URGD 27x60/250 REQUEST QUOTE
Standard: IEC 60269.1 and 4  |  Rating: 600 V / 690 V AC (200kA Breaking Capacity)  |  Class / Category: aR-CLASS (According to VDE 636-23)

Replacing discontinued solid-state protection does not have to result in full-panel retrofits. Reach out with your desired catalog number, and our technical sourcing team will rapidly provide pricing and current inventory availability globally.

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