Ferraz Shawmut Protistor FR10GB69V Series 10x38mm Semiconductor Fuses 690VAC

The Ferraz Shawmut Protistor FR10GB69V series comprises 10x38 mm ferrule-type semiconductor (AC) fuses rated at 690 VAC. The manufacturer catalog identifies 17 selectable part numbers with rated currents from 1 A to 32 A. The range is primarily designated gRB; the 1 A model is specifically designated gRC, while the 32 A model is marked as a non-approval rating.

Technical Specifications

Model Selection

Select the required fuse using its rated current and exact manufacturer Catalog Number. The matching Ref. Number and alternative manufacturer designation are provided for procurement identification. Only the combinations explicitly listed below are included.

*Important: The manufacturer explicitly identifies the 32 A model FR10GB69V32 as a "Non approval rating." The 1 A model FR10GB69V1 carries a gRC designation in the original reference table. These designations should be preserved when matching original equipment requirements.

Selection and Installation Notes

The manufacturer provides pre-arcing I²t data at 1 ms, total operating I²t data, dissipated power at rated current and 0.8 times rated current, time-current curves, cut-off characteristics and arc-voltage curves. These characteristics vary with the selected fuse rating and should be checked against the relevant manufacturer curves.

The published peak arc-voltage values are 2500 V for ratings from 1 A to 6 A and 1450 V for ratings from 8 A to 30 A. The original table groups the 30 A and 32 A entries for certain electrical measurements, without separate values for the 32 A model.

I²t test-condition note: The original datasheet labels the total operating I²t column at 660 VAC, while its explanatory text refers to 690 VAC. Confirm the applicable test condition before using those values for protection-coordination calculations.

The manufacturer also publishes DC working-voltage possibility curves based on the fault-path L/R time constant. These curves do not establish a single unconditional DC voltage rating. Confirm the actual DC operating conditions before selecting a fuse for DC service.

The 10x38 mm dimensional format alone does not establish electrical interchangeability. Verify the exact catalog number, current rating, fuse characteristic, interrupting requirements and applicable protection curves before replacing an existing fuse.

Applications

This product family is categorized by the manufacturer as semiconductor (AC) fuses for semiconductor circuit protection. The appropriate rating must be selected according to the protected circuit and its electrical protection requirements.

Technical Data Reference

Source: Ferraz Shawmut, "Semiconductor (AC) Fuses – Other Protistor Fuses – Ferrule Fuses – 10x38 gRB – 690VAC," document references SCAC166, SCAC167, SCAC168 and SCAC169, marked 12/04. The separately documented 10x38 URB/URD/URL 500–600 VAC range is not included in this series listing.

B2B Sourcing Support

Apexon Supply provides B2B sourcing and procurement support for the Ferraz Shawmut FR10GB69V catalog family. Buyers can use the exact Catalog Number and Ref. Number to prepare inquiries, identify required ratings and request sourcing assistance. Alternative or replacement sourcing requires separate technical verification.

For a quotation, please send your exact FR10GB69V model number, required quantity and delivery destination, together with any applicable technical requirements, to [email protected].