LA70Q2004 Equivalent & Substitute Parts

Part Overview

The LA70Q2004 is a 200A cartridge fuse rated for 700 VAC / 650 VDC operation, designed for bolt mount installation in electrical and industrial applications. Manufactured by Littelfuse Inc., this component is classified as obsolete, making identification of suitable substitute parts essential for system maintenance and component replacement.

The obsolete status of the LA70Q2004 necessitates sourcing of equivalent alternatives that maintain electrical performance and mechanical compatibility while offering active product support and current manufacturing availability.

Substiute Parts

LA70Q2004

Littelfuse Inc.In Stock: 1180LA70Q2004 Datasheet

Current PartRFQ

L70QS200.V

Littelfuse Inc.In Stock: 761L70QS200.V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LA70Q2004 is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Current Rating: 200A (exact match required)
• Voltage Rating - AC: 700 VAC (minimum requirement)
• Voltage Rating - DC: 650 VDC or higher (minimum requirement)
• Fuse Type: Cartridge (mechanical and functional requirement)

Mechanical Compatibility Requirements:

• Mounting Type: Bolt Mount (installation requirement)
• Package / Case: Cylindrical, Blade Terminal (Bolt) (physical interface requirement)

Regulatory & Quality Requirements:

• RoHS3 Compliance (environmental standard)
• Manufacturer: Littelfuse Inc. (product line consistency)

The L70QS200.V meets all electrical requirements with enhanced DC voltage rating (700 VDC vs. 650 VDC) and maintains mechanical compatibility through identical mounting and package specifications. Both components are manufactured by Littelfuse Inc. and comply with ROHS3 standards.

Parameter Comparison

Engineering Selection Recommendations

The L70QS200.V is the manufacturer-recommended substitute for the LA70Q2004. Selection is based on the following engineering criteria:

Electrical Performance: The L70QS200.V maintains identical AC voltage rating (700 VAC) and exceeds the DC voltage requirement (700 VDC vs. 650 VDC). Current rating remains at 200A, ensuring equivalent circuit protection characteristics.

Mechanical Compatibility: Both components utilize identical bolt mount installation and cylindrical blade terminal packaging, permitting direct physical replacement without modification to mounting hardware or electrical connections.

Regulatory Compliance: The L70QS200.V holds expanded approval certifications (CE, cURus, UR) compared to the LA70Q2004 (UR only), providing broader regulatory acceptance. Both components meet ROHS3 environmental standards.

Product Availability: The L70QS200.V maintains active product status with current manufacturing support, addressing the obsolescence limitation of the LA70Q2004.

Frequently Asked Questions (FAQ)

Q: Can the L70QS200.V be used as a direct replacement for the LA70Q2004?

A: Yes. Both components share identical current rating (200A), AC voltage rating (700 VAC), mounting type (bolt mount), and package configuration (cylindrical, blade terminal). The L70QS200.V exceeds the DC voltage requirement (700 VDC vs. 650 VDC), making it electrically compatible for direct substitution.

Q: What is the difference in breaking capacity between these fuses?

A: The LA70Q2004 has a breaking capacity of 100kA at rated voltage. The L70QS200.V provides enhanced breaking capacity of 200kA AC and 50kA DC. This represents improved fault current handling capability in the substitute component.

Q: Are there any physical dimension differences that would affect installation?

A: Yes. The LA70Q2004 measures 1.500" Dia x 2.843" L (38.10mm x 72.20mm), while the L70QS200.V measures 1.218" Dia x 5.085" L (30.94mm x 129.16mm). Despite dimensional differences, both components use identical bolt mount and blade terminal interfaces, permitting installation in the same mounting hardware.

Q: What certifications does the substitute part hold?

A: The L70QS200.V holds CE, cURus, and UR certifications, providing broader regulatory acceptance than the LA70Q2004, which holds UR certification only.

Q: Is the L70QS200.V RoHS compliant?

A: Yes. The L70QS200.V is ROHS3 compliant, matching the environmental compliance status of the LA70Q2004.