Equivalent & Substitute Parts for 0RLS035.T

Part Overview

The 0RLS035.T is a 35A 600VAC fast-blow cartridge fuse from Littelfuse Inc.'s POWR-GARD® RLS series. This component is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in electrical and industrial applications. The cartridge fuse requires a dedicated holder for installation and is rated for 10kA breaking capacity at its nominal voltage.

Substiute Parts

0RLS035.T

Littelfuse Inc.In Stock: 10380RLS035.T Datasheet

Current PartRFQ

KLSR035.T

LittelfuseIn Stock: 898KLSR035.T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0RLS035.T is determined by strict equivalence across the following critical parameters:

• Current Rating: Must be 35A
• Voltage Rating (AC): Must be 600 VAC minimum
• Fuse Type: Must be Cartridge
• Physical Dimensions: Must be 1.063" Dia x 5.500" L to ensure mechanical compatibility with existing holders
• Response Time: Must be Fast Blow
• Mounting Configuration: Must require holder (no direct-mount alternatives)

The KLSR035.T meets all these criteria and is therefore a valid substitute. While the KLSR035.T belongs to a different fuse class (RK1 versus H) and offers enhanced specifications (300 VDC capability, 200kA AC breaking capacity), these represent improvements that do not compromise backward compatibility in AC 600VAC applications.

Parameter Comparison

Engineering Selection Recommendations

The KLSR035.T is the manufacturer-recommended substitute for the obsolete 0RLS035.T. Both components share identical current ratings, AC voltage ratings, physical dimensions, and response characteristics, ensuring direct mechanical and electrical compatibility within AC 600VAC circuits.

The KLSR035.T offers additional advantages: it maintains active product status, carries ROHS3 compliance (versus non-compliance of the 0RLS035.T), and provides enhanced breaking capacity specifications. These improvements do not introduce incompatibility with existing installations designed for the 0RLS035.T.

All certifications required for the original part (CE, CSA, UL) are maintained in the substitute, supporting continued compliance in regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the KLSR035.T be used as a direct replacement for the 0RLS035.T?

A: Yes. Both fuses share identical current ratings (35A), AC voltage ratings (600 VAC), physical dimensions (1.063" Dia x 5.500" L), response time (Fast Blow), and mounting requirements (Requires Holder). The KLSR035.T is mechanically and electrically compatible with existing 0RLS035.T installations.

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

A: Class designation indicates the fuse's performance characteristics and breaking capacity. The KLSR035.T (Class RK1) provides higher breaking capacity (200kA AC) compared to the 0RLS035.T (Class H, 10kA). This represents an enhancement that does not affect backward compatibility in standard AC applications.

Q: Does the KLSR035.T's 300 VDC rating affect its use in 600 VAC circuits?

A: No. The 300 VDC rating is an additional capability that does not impact AC performance. The KLSR035.T maintains full 600 VAC compatibility and operates identically to the 0RLS035.T in AC-only applications.

Q: Are the physical dimensions identical between both fuses?

A: Yes. Both the 0RLS035.T and KLSR035.T measure 1.063" Dia x 5.500" L (27.00mm x 139.70mm), ensuring compatibility with existing cartridge fuse holders without modification.

Q: What certifications apply to the KLSR035.T?

A: The KLSR035.T carries CE, CSA, and UL certifications, matching the certification profile of the 0RLS035.T and maintaining compliance in regulated electrical and industrial applications.

Q: Why is the 0RLS035.T listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The KLSR035.T is the active replacement, offering equivalent functionality with improved specifications and current RoHS3 compliance.