BP/NON-20 Equivalent & Substitute Parts

Part Overview

The BP/NON-20 is a 20A cartridge fuse rated for 250 VAC and 125 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing system maintenance and new designs. The fuse requires a compatible holder for installation and is classified as K5 with a 50kA breaking capacity at rated voltage.

Substiute Parts

BP/NON-20

Eaton - Bussmann Electrical DivisionIn Stock: 1184BP/NON-20 Datasheet

Current PartRFQ

0NLN020.T

Littelfuse Inc.In Stock: 10010NLN020.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BP/NON-20 is determined by the following critical parameters:

• Current Rating: 20A (exact match required)
• Voltage Rating - AC: 250 VAC (exact match required)
• Voltage Rating - DC: Minimum 125 VDC (equal or higher acceptable)
• Fuse Class: K5 (exact match required)
• Physical Dimensions: Cartridge form factor, 0.560" Dia x 2.000" L nominal (minor tolerance variations acceptable)
• Approval Certifications: CE, CSA, UL (required for regulatory compliance)
• Breaking Capacity: 50kA minimum at rated voltage

The substitute part 0NLN020.T meets these criteria with the following considerations: it maintains the 20A current rating, 250 VAC AC voltage rating, and K5 classification. The DC voltage rating is 250 VDC, which exceeds the minimum 125 VDC requirement. Physical dimensions are within acceptable tolerance (0.563" Dia vs. 0.560" Dia). All required certifications are present.

Parameter Comparison

Engineering Selection Recommendations

The 0NLN020.T (Littelfuse POWR-GARD® NLN series) is a direct functional equivalent for the discontinued BP/NON-20. Selection is based on:

• Identical current and AC voltage ratings ensure circuit protection at the same threshold
• Higher DC voltage rating (250 VDC vs. 125 VDC) provides enhanced capability without compromising protection characteristics
• K5 class classification maintains the same response time and breaking capacity profile
• Physical dimensions are within acceptable tolerance for standard cartridge fuse holders
• Active product status ensures ongoing availability and supply chain continuity
• All required regulatory certifications (CE, CSA, UL) are maintained
• ROHS3 compliance exceeds the original RoHS requirement

Frequently Asked Questions (FAQ)

Q: Can the 0NLN020.T be used as a direct replacement in existing BP/NON-20 applications?

A: Yes. The 0NLN020.T is mechanically and electrically compatible. Both fuses are cartridge type with matching current ratings, AC voltage ratings, and K5 classification. Physical dimensions are within tolerance for standard holders. Verify holder compatibility with the 0.563" diameter specification.

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

A: The 0NLN020.T is rated for 250 VDC compared to the BP/NON-20's 125 VDC. This higher rating does not affect AC circuit operation and provides additional margin in DC applications. It does not change the fuse's response characteristics or breaking capacity.

Q: Are there any regulatory or compliance differences between these parts?

A: Both parts carry CE, CSA, and UL certifications. The 0NLN020.T meets ROHS3 compliance, which is more stringent than the original RoHS Compliant designation. No regulatory barriers exist for substitution.

Q: What is the physical dimension tolerance between these cartridge fuses?

A: The BP/NON-20 is 0.560" diameter; the 0NLN020.T is 0.563" diameter. This 0.003" difference is within standard mechanical tolerance for cartridge fuse holders and does not affect fit or function.

Q: Does the Fast Blow response time of the 0NLN020.T differ from the original part?

A: The original BP/NON-20 response time is not specified in the available data. Both parts are K5 class fuses, which defines their response characteristics. The 0NLN020.T's Fast Blow designation is consistent with K5 classification.