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Eaton Bussmann

Eaton Bussmann JJN-400 400A Class T Fast-Acting Fuse

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SKU
JJN-400

The Eaton Bussmann JJN-400 is a 400 A, fast-acting Class T fuse rated for 300 VAC and 160 VDC. It has current-limiting operation, bolted-blade terminals at both ends, interrupting ratings of 200 kA RMS symmetrical at 300 VAC and 20 kA at 160 VDC, and a non-indicating design.

  • 400 A Current Rating
  • Class T Fuse Type
  • 300 VAC and 160 VDC Ratings
  • AC and DC Interrupting Ratings
  • Fast-Acting, Current-Limiting Operation
  • Bolted-Blade Terminals at Both Ends

Product Overview

The Eaton Bussmann JJN-400 is a 400 A, fast-acting Class T fuse rated for 300 VAC and 160 VDC. It has current-limiting operation, bolted-blade terminals at both ends, interrupting ratings of 200 kA RMS symmetrical at 300 VAC and 20 kA at 160 VDC, and a non-indicating design.

Technical Specifications

Product information and specifications for the selected item.

SKU: JJN-400

Product Information

BrandEaton Bussmann
MPNJJN-400
SKUJJN-400
UPC / GTIN051712627047
CategoryFuses, Fuse Blocks & Holders

Key Specs

Current - Maximum400 A
AC Voltage Rating300 V AC
DC Voltage Rating160 V DC
Fits Fuse Class or TypeClass T

Electrical Ratings

Current - Maximum400 A
AC Voltage Rating300 V AC
DC Voltage Rating160 V DC
DC interrupting rating20 (applies to the 15–600 A fuse range) kA DC
Current-limiting operationProvides a current-limiting response on non-inductive circuits for ground faults and short circuits
ApplicationVFD line protection
AC interrupting rating200 kA RMS symmetrical
Apparent RMS symmetrical let-through current at 200 kA prospective SCC9,000 A
Inrush-current limitationShort-circuit protection only; must be oversized for circuits with motor, transformer, or other inductive-load inrush.
Short-circuit behaviorCurrent-limiting
Let-through current at 200 kA prospective short-circuit current9,000 A apparent RMS symmetrical
Typical applicationsLarge apartment complexes; multi-family meter stacks; VFD line protection

Fuse Type & Indication

Fits Fuse Class or TypeClass T
Visual IndicationNon-Indicating
UL standardUL 248-15
Fuse element constructionSingle-element
CSA standardCSA C22.2 No. 248.15
Agency approvals and compliancecULus Listed (file JDDZ.E4273); UL 248-15; CSA C22.2 No. 248.15; CE; RoHS compliant
Connection styleBolted blade end x bolted blade end
Recommended fuse blockT30400-1_
CE markingCE marked
cULus listingcULus Listed; file No. JDDZ.E4273
RoHS statusRoHS compliant

Dimensions & Weight

Height (in.)1
Width (in.)1
Length (in.)2.75
Weight (lb.)0.25

Product Documents

  • Bussmann Series Full Line Catalog 1007 — Section 1: Low Voltage Branch Circuit Fuses Other Open / download file
  • Eaton Bussmann Series UL Low Voltage Fuse Links and Fuse Holders Catalogue (CA134001EN) Other Open / download file
  • Technical Data 1025 — JJN Limitron 300 Vac, 1–1200 A, Fast-Acting Class T Fuses Spec sheet Open / download file

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