BP/NON-40 Equivalent & Substitute Parts

Part Overview

The BP/NON-40 is a 40A cartridge fuse rated for 250 VAC and 125 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This component is classified as discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new designs. The part requires a compatible fuse holder for installation and is approved for electrical and industrial applications.

Substiute Parts

BP/NON-40

Eaton - Bussmann Electrical DivisionIn Stock: 1240BP/NON-40 Datasheet

Current PartRFQ

0NLN040.T

Littelfuse Inc.In Stock: 10320NLN040.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BP/NON-40 is determined by the following critical parameters:

• Current Rating: Must be 40A
• Voltage Rating - AC: Must be 250 VAC minimum
• Voltage Rating - DC: Must be 125 VDC minimum
• Fuse Type: Must be Cartridge
• Class: Must be K5
• Physical Dimensions: Must be compatible with 0.810" Dia x 3.00" L cartridge holders
• Approval Certifications: Must maintain CE, CSA, and UL compliance

The substitute part 0NLN040.T meets all substitution criteria. While it provides enhanced DC voltage rating (250 VDC versus 125 VDC), this represents a functional improvement within the same cartridge form factor and does not compromise compatibility with systems designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The 0NLN040.T from Littelfuse Inc. is the direct equivalent substitute for the discontinued BP/NON-40. Both parts maintain identical current ratings, AC voltage specifications, fuse class, and breaking capacity at rated AC voltage. The substitute provides enhanced DC voltage capability (250 VDC versus 125 VDC), which does not create incompatibility with existing system designs. Both parts carry equivalent regulatory approvals (CE, CSA, UL) and maintain compliance with RoHS standards. The physical dimensions are functionally identical within manufacturing tolerances, ensuring compatibility with standard cartridge fuse holders. The active product status of the 0NLN040.T ensures ongoing availability for procurement and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 0NLN040.T be used as a direct replacement for the BP/NON-40?

A: Yes. Both parts are 40A K5 class cartridge fuses with 250 VAC ratings, identical physical dimensions, and equivalent regulatory certifications. The substitute is mechanically and electrically compatible with systems designed for the original part.

Q: What is the significance of the higher DC voltage rating on the substitute part?

A: The 0NLN040.T is rated for 250 VDC compared to the BP/NON-40's 125 VDC rating. This represents an expanded operational envelope that does not affect compatibility. Systems operating at or below 125 VDC will function identically with either part.

Q: Are the physical dimensions identical between the two parts?

A: The dimensions are functionally equivalent. The BP/NON-40 measures 0.810" Dia x 3.00" L, while the 0NLN040.T measures 0.811" Dia x 3.000" L. These differences fall within standard manufacturing tolerances for cartridge fuse holders and do not affect interchangeability.

Q: Do both parts carry the same regulatory approvals?

A: Yes. Both the BP/NON-40 and 0NLN040.T are certified by CE, CSA, and UL, ensuring compliance with applicable electrical safety standards.

Q: What is the difference in breaking capacity specifications?

A: The BP/NON-40 specifies 50kA breaking capacity at rated voltage. The 0NLN040.T specifies 50kA AC and 20kA DC. Both meet the 50kA AC requirement, ensuring equivalent performance in AC-dominant applications.