LH602003C Equivalent & Substitute Parts

Part Overview

The LH602003C is a 200 A, 600V fuse block designed for Class H(K) and Class R cartridge fuses with 3-circuit capacity. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system maintenance and new installations. The part features chassis mount configuration with box lug termination, suitable for industrial power distribution applications requiring high-current protection.

Substiute Parts

LH602003C

Littelfuse Inc.In Stock: 915LH602003C Datasheet

Current PartRFQ

LFH602003C

Littelfuse Inc.In Stock: 966LFH602003C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFH602003C qualifies as a direct substitute based on the following critical parameters:

• Current Rating: Both parts rated at 200 A
• Voltage Rating: Both rated at 600V
• Number of Circuits: Both provide 3-circuit configuration
• Fuse Type & Compatibility: Both accept Class H(K) and Class R cartridge fuses
• Fuseholder Type: Both are block-type fuseholders
• Termination Style: Both feature box lug termination

The primary difference is mounting configuration: LH602003C uses chassis mount, while LFH602003C uses DIN rail mount. This distinction affects installation method but does not alter electrical performance or fuse compatibility.

Parameter Comparison

Engineering Selection Recommendations

The LFH602003C is the direct electrical equivalent to the LH602003C. Selection between these parts depends on installation requirements:

Choose LFH602003C when:

• DIN rail mounting is available or preferred in the installation environment
• RoHS3 compliance is required for new designs or regulatory adherence
• Active product support and availability are priorities

Retain LH602003C only when:

• Existing chassis mount infrastructure is fixed and cannot be modified
• Legacy system compatibility requires the original mounting configuration

Both parts maintain identical electrical performance, fuse compatibility, and current/voltage ratings. The transition from LH602003C to LFH602003C represents a product line modernization with improved compliance status.

Frequently Asked Questions (FAQ)

Q: Can LFH602003C replace LH602003C in all applications?

A: Electrically and functionally, yes. The LFH602003C provides identical current rating (200 A), voltage rating (600V), circuit count (3), and fuse compatibility (Class H(K), Class R). The difference is mounting method: LH602003C requires chassis mount installation, while LFH602003C uses DIN rail. Installation feasibility depends on your enclosure design.

Q: What is the significance of the mounting type difference?

A: Mounting type affects physical installation only, not electrical performance. Chassis mount (LH602003C) uses direct panel or chassis attachment with box lugs. DIN rail mount (LFH602003C) attaches to standard 35mm DIN rail. Both termination styles are box lug, ensuring equivalent electrical connection methods.

Q: Why is LH602003C marked obsolete?

A: The LH602003C has been superseded by the LFH602003C in Littelfuse's product portfolio. The newer LFH602003C offers DIN rail mounting flexibility and RoHS3 compliance, representing current manufacturing standards.

Q: Are there any compatibility concerns with Class H(K) and Class R fuses?

A: No. Both the LH602003C and LFH602003C are designed for use with Class H(K) and Class R cartridge fuses. Fuse compatibility is identical between the two parts.

Q: What does RoHS3 compliance mean for the LFH602003C?

A: RoHS3 compliance indicates the LFH602003C meets current Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. The LH602003C is RoHS non-compliant, making LFH602003C the preferred choice for new installations subject to environmental regulations.