LPN-RK-1SP Equivalent & Substitute Parts

Part Overview

The LPN-RK-1SP is a low peak dual element fuse manufactured by Eaton - Bussmann Electrical Division. This component is classified as a fuse cartridge designed for electrical and industrial applications. The product maintains active status with full RoHS compliance. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives from different manufacturers.

Substiute Parts

LPN-RK-1SP

Eaton - Bussmann Electrical DivisionIn Stock: 800LPN-RK-1SP Datasheet

Current PartRFQ

LNRK001.T

Littelfuse Inc.In Stock: 1098LNRK001.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPN-RK-1SP is determined by the following critical parameters:

• Fuse Type & Class: Cartridge fuse, RK1 class
• Current Rating: 1A nominal
• Voltage Ratings: 250 VAC / 125 VDC
• Response Characteristic: Slow Blow (dual element)
• Breaking Capacity: Minimum 200kA AC / 20kA DC
• Physical Form Factor: Cartridge configuration requiring holder
• Regulatory Compliance: RoHS and international certifications (CE, CSA, UL)

The substitute part LNRK001.T from Littelfuse Inc. meets these core electrical and mechanical parameters, enabling direct functional equivalence in applications requiring RK1 class fuses with 1A, 250 VAC / 125 VDC ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the LPN-RK-1SP and LNRK001.T maintain active product status with current manufacturer support. The Littelfuse LNRK001.T provides documented breaking capacity specifications (200kA AC / 20kA DC) and ROHS3 compliance, meeting or exceeding the electrical performance requirements of the Eaton part. Both components carry equivalent regulatory certifications suitable for industrial and electrical applications. Selection between these parts should be based on availability, lead time, and established supplier relationships, as electrical and mechanical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can LNRK001.T directly replace LPN-RK-1SP in existing installations?

A: Yes. Both parts are RK1 class cartridge fuses with identical current (1A) and voltage ratings (250 VAC / 125 VDC). Both require a fuse holder and exhibit slow blow response characteristics. Physical dimensions and electrical performance are compatible.

Q: What determines if a fuse is a valid substitute?

A: Valid substitutes must match the fuse class (RK1), current rating (1A), AC voltage rating (250 VAC), DC voltage rating (125 VDC), response type (slow blow), and physical form factor (cartridge requiring holder). Breaking capacity must meet or exceed application requirements.

Q: Are there packaging differences between these parts?

A: Yes. The LPN-RK-1SP is supplied in bulk packaging, while LNRK001.T is supplied in box packaging. This affects inventory management and handling but does not impact electrical or mechanical compatibility.

Q: Do both parts meet current RoHS requirements?

A: Yes. LPN-RK-1SP is RoHS Compliant, and LNRK001.T is ROHS3 Compliant. Both meet current environmental and hazardous substance restrictions.

Q: What is the significance of RK1 class for substitution?

A: RK1 class defines the fuse's interrupting rating, physical dimensions, and response characteristics. Only RK1 class fuses can substitute for other RK1 class fuses. Mixing fuse classes is not permitted.