AC interrupt rating
200000 A
Conditions: {"basis":"RMS_symmetrical","voltage_v":300}
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Verified current equipment
Bussmann series JJN-400 Class T Fuse
Exact 400 A North American Class T fast-acting current-limiting fuse rated 300 VAC and 160 VDC.
Best for: High-current circuit protection where 400 A is the engineered fuse size and both the DC and AC interrupt ratings meet the available fault current.
Key facts
- AC voltage rating
- 300 V
- Component type
- class_t_fuse
- Current rating
- 400 A
- DC voltage rating
- 160 V
- Fuse family
- North American Class T
Specifications alone do not confirm that a product fits your RV. Match the RV model and year to documented fitment evidence, then check system voltage, battery chemistry, wiring, protection and input/output limits before buying.
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BROWSE RV EQUIPMENT →Specifications and source evidence
Start with the key facts above. Open the complete evidence only when you need the detailed values and citations.
View all 11 verified specifications and sources
AC voltage rating
300 V
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Component type
class_t_fuse
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Bos Current Limiting
Yes
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Current rating
400 A
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
DC voltage rating
160 V
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Bos Fast Acting
Yes
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Fuse family
North American Class T
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
DC interrupt rating
20000 A
Conditions: {"system":"DC","voltage_v":160}
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Bos Listing Scope
UL 248-15; cULus; CSA C22.2 No. 248.15
- Bussmann series JJN Class T fuse data sheet · JJN technical data and JJN-400 catalog row · rev. 1025 JJN
Bos Termination Method
bolted blade end x bolted blade end
- JJN-400 Class T fuse SKU page · JJN technical data and JJN-400 catalog row · rev. current SKU page
Why you can trust this record
Only verified claims with claim-level provenance are returned. Conditions, units and source locators must be preserved when citing a fact.
Heeler RV keeps commerce downstream of technical selection. Affiliate status never changes specifications, lifecycle, replacement evidence, fitment evidence or comparison ranking.