Equivalent & Substitute Parts for 0RLS005.T

Part Overview

The 0RLS005.T is a 5A 600VAC fast-blow fuse cartridge manufactured by Littelfuse Inc. as part of the POWR-GARD® RLS series. This component is classified as obsolete, indicating discontinuation from active production. The cartridge requires a compatible holder for installation and is designed for electrical and industrial applications. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for system maintenance, repair, and new design implementations where this specification is required.

Substiute Parts

0RLS005.T

Littelfuse Inc.In Stock: 11330RLS005.T Datasheet

Current PartRFQ

KLSR005.T

Littelfuse Inc.In Stock: 836KLSR005.T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0RLS005.T is determined by the following critical parameters:

• Current Rating: Must be 5A to match load protection requirements
• Voltage Rating - AC: Must be 600 VAC or higher to maintain voltage compatibility
• Fuse Type: Must be cartridge format to fit existing holder assemblies
• Physical Dimensions: Must be 0.811" Dia x 5.000" L to ensure mechanical fit
• Response Time: Must be fast-blow to preserve circuit protection characteristics
• Approval Certifications: Must maintain CE, CSA, and UL certifications for regulatory compliance

The KLSR005.T meets all these criteria while offering enhanced specifications in breaking capacity and DC voltage capability, making it a direct functional equivalent for the obsolete 0RLS005.T.

Parameter Comparison

Engineering Selection Recommendations

The KLSR005.T is the direct substitute for the obsolete 0RLS005.T based on the following engineering criteria:

Functional Equivalence: Both parts maintain identical current rating (5A), AC voltage rating (600 VAC), response time (fast-blow), physical dimensions, and mounting requirements. This ensures direct compatibility with existing holder assemblies and circuit protection schemes.

Regulatory Compliance: Both parts carry CE, CSA, and UL certifications, maintaining the same approval agency standards required for electrical and industrial applications.

Product Availability: The 0RLS005.T is obsolete with no active production. The KLSR005.T is an active product with current inventory availability, ensuring supply chain continuity.

Enhanced Specifications: The KLSR005.T provides superior breaking capacity (200kA AC versus 10kA) and adds DC voltage capability (250 VDC), offering improved performance margins without compromising AC circuit protection.

Compliance Upgrade: The KLSR005.T achieves ROHS3 compliance, whereas the 0RLS005.T is non-compliant, supporting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the KLSR005.T be used as a direct replacement for the 0RLS005.T in existing installations?

A: Yes. Both parts share identical current rating (5A), AC voltage rating (600 VAC), response time (fast-blow), physical dimensions (0.811" Dia x 5.000" L), and mounting type (requires holder). The KLSR005.T will function identically in circuits designed for the 0RLS005.T.

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

A: Class designation indicates the fuse's breaking capacity and application category. The 0RLS005.T (Class H) has a breaking capacity of 10kA, while the KLSR005.T (Class RK1) has a breaking capacity of 200kA AC. Both classes are approved for industrial and electrical applications with the same certifications.

Q: Does the KLSR005.T fit the same holder as the 0RLS005.T?

A: Yes. Both cartridges have identical physical dimensions (0.811" Dia x 5.000" L) and are designed for cartridge-type holders. No holder modification or replacement is required.

Q: Why does the KLSR005.T have a DC voltage rating when the 0RLS005.T does not?

A: The KLSR005.T is rated for both AC and DC applications (600 VAC / 250 VDC), providing broader application flexibility. In AC-only circuits, the DC rating does not affect performance and represents an enhancement.

Q: Is the KLSR005.T RoHS compliant?

A: Yes. The KLSR005.T is ROHS3 compliant, whereas the 0RLS005.T is non-compliant. This makes the KLSR005.T suitable for applications requiring modern environmental compliance standards.

Q: Are both parts certified by the same approval agencies?

A: Yes. Both the 0RLS005.T and KLSR005.T carry CE, CSA, and UL certifications, maintaining identical regulatory approval standards.