Littelfuse 0RLS070.V Fuse Cartridge - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0RLS070.V is a 70A 600VAC cylindrical fuse cartridge from the POWR-GARD® RLS series, designed for electrical and industrial applications requiring fast-blow protection. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain the same electrical and mechanical specifications for continued system support and procurement.

Substiute Parts

0RLS070.V

Littelfuse Inc.In Stock: 10090RLS070.V Datasheet

Current PartRFQ

KLSR070.V

Littelfuse Inc.In Stock: 795KLSR070.V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The KLSR070.V qualifies as a direct substitute based on the following matching electrical and mechanical parameters:

• Current Rating: 70A (identical)
• Voltage Rating - AC: 600 VAC (identical)
• Fuse Type: Cartridge (identical)
• Response Time: Fast Blow (identical)
• Package / Case: Cylindrical, Blade Terminals (identical)
• Mounting Type: Requires Holder (identical)
• Manufacturer: Littelfuse Inc. (same manufacturer)
• Product Status: Active (available for procurement)

The KLSR070.V represents an upgraded alternative within the same product family, offering enhanced performance characteristics while maintaining full compatibility with existing holder installations.

Parameter Comparison

Engineering Selection Recommendations

The KLSR070.V is the manufacturer-recommended substitute for the obsolete 0RLS070.V. Both parts maintain identical electrical ratings (70A, 600 VAC, Fast Blow) and mechanical compatibility (cylindrical cartridge with blade terminals, requires holder). The KLSR070.V offers enhanced specifications including higher breaking capacity (200kA AC versus 10kA) and ROHS3 compliance, making it suitable for modern procurement requirements. Both parts carry equivalent international approvals (CE, CSA, UL), ensuring regulatory compliance in electrical and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the KLSR070.V be used as a direct replacement in existing 0RLS070.V installations?

A: Yes. Both parts share identical current ratings (70A), voltage ratings (600 VAC), response characteristics (Fast Blow), and mechanical form factors (cylindrical cartridge with blade terminals). Both require the same holder type for installation.

Q: What is the difference in physical dimensions between these parts?

A: The 0RLS070.V measures 1.311" Dia x 5.874" L (33.30mm x 149.20mm), while the KLSR070.V measures 1.311" Dia x 7.874" L (33.30mm x 200.00mm). The diameter is identical; the length differs by 2 inches. Verify holder accommodation for the longer cartridge length before installation.

Q: Does the KLSR070.V support DC applications?

A: The KLSR070.V is rated for 300 VDC in addition to 600 VAC. The 0RLS070.V does not specify a DC rating. If DC operation is required, the KLSR070.V provides this capability.

Q: What is the significance of the Class rating difference (H versus RK1)?

A: Class H and Class RK1 represent different fuse classifications with distinct performance characteristics. The KLSR070.V (RK1) offers higher breaking capacity (200kA AC) compared to the 0RLS070.V (Class H, 10kA). Selection should be based on circuit requirements and equipment specifications.

Q: Is the KLSR070.V compliant with current environmental standards?

A: Yes. The KLSR070.V is ROHS3 compliant, meeting current environmental regulations. The 0RLS070.V is RoHS non-compliant. For new designs or procurement requiring environmental compliance, the KLSR070.V is the appropriate choice.

Q: Are both parts available from the same manufacturer?

A: Yes. Both the 0RLS070.V and KLSR070.V are manufactured by Littelfuse Inc. The KLSR070.V is currently active in production, while the 0RLS070.V is obsolete.