Littelfuse 0RLS015.T Fuse Cartridge - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0RLS015.T is a 15A 600VAC fast-blow cartridge fuse from the POWR-GARD® RLS series. This component is classified as obsolete, making identification of suitable substitute parts essential for system maintenance and component replacement. The cartridge fuse requires a compatible holder for installation and is designed for electrical and industrial applications requiring fast-response overcurrent protection.

Substiute Parts

0RLS015.T

Littelfuse Inc.In Stock: 10050RLS015.T Datasheet

Current PartRFQ

KLSR015.T

Littelfuse Inc.In Stock: 979KLSR015.T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0RLS015.T is determined by the following critical parameters that must remain consistent:

• Current Rating: 15A (exact match required)
• Voltage Rating - AC: 600 VAC (minimum requirement)
• Fuse Type: Cartridge (physical form factor)
• Physical Dimensions: 0.811" Dia x 5.000" L (holder compatibility)
• Response Time: Fast Blow (protection characteristic)
• Mounting Type: Requires Holder (installation method)

The KLSR015.T from Littelfuse Inc. meets all these critical parameters while offering enhanced specifications in breaking capacity and additional DC voltage rating capability.

Parameter Comparison

Engineering Selection Recommendations

The KLSR015.T is the direct substitute for the obsolete 0RLS015.T. Both components share identical current ratings, AC voltage ratings, physical dimensions, and response characteristics, ensuring mechanical and electrical compatibility within existing holder assemblies.

The KLSR015.T offers the following advantages:

• Active product status ensures continued availability and supply chain reliability
• ROHS3 compliance meets current environmental and regulatory requirements
• Significantly higher breaking capacity (200kA AC versus 10kA) provides enhanced fault protection margins
• Additional 250 VDC rating extends application flexibility for mixed AC/DC systems
• Identical physical form factor guarantees direct replacement without mechanical modification

Both components carry identical approval certifications (CE, CSA, UL), confirming equivalent safety and performance standards.

Frequently Asked Questions (FAQ)

Q: Can the KLSR015.T be used as a direct replacement for the 0RLS015.T?

A: Yes. Both components have identical current ratings (15A), AC voltage ratings (600 VAC), physical dimensions (0.811" Dia x 5.000" L), response time (Fast Blow), and mounting requirements (Requires Holder). The KLSR015.T will function identically in any application using the 0RLS015.T.

Q: What is the difference between Class H and Class RK1?

A: Class H and Class RK1 are different fuse classifications. The KLSR015.T (Class RK1) has a significantly higher breaking capacity (200kA AC) compared to the 0RLS015.T (Class H, 10kA). Both classes are approved for the same voltage and current ratings specified.

Q: Does the KLSR015.T require a different holder than the 0RLS015.T?

A: No. Both components have identical physical dimensions (0.811" Dia x 5.000" L) and are cartridge-type fuses requiring a holder. The KLSR015.T is mechanically compatible with any holder designed for the 0RLS015.T.

Q: Why is the 0RLS015.T listed as obsolete?

A: The 0RLS015.T is no longer in active production. The KLSR015.T is the current-generation equivalent from Littelfuse Inc., offering improved specifications and regulatory compliance while maintaining full electrical and mechanical compatibility.

Q: Is the KLSR015.T RoHS compliant?

A: Yes. The KLSR015.T is ROHS3 compliant, meeting current environmental regulations. The 0RLS015.T is RoHS non-compliant.

Q: Can the KLSR015.T be used in DC applications?

A: The KLSR015.T has a 250 VDC rating, enabling use in DC circuits up to 250V. The 0RLS015.T does not specify a DC rating. Both components are rated for 600 VAC AC applications.