CCMR04.5T Equivalent & Substitute Parts

Part Overview

The CCMR04.5T is a 4.5A cartridge fuse manufactured by Littelfuse Inc., rated for 600 VAC and 250 VDC operation. Designed for motor protection applications, this slow-blow fuse features a CC class rating and meets CE, CSA, and UL approval standards. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component replacement in existing installations.

Substiute Parts

CCMR04.5T

Littelfuse Inc.In Stock: 1203CCMR04.5T Datasheet

Current PartRFQ

CCMR04.5TXP

Littelfuse Inc.In Stock: 943CCMR04.5TXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CCMR04.5T is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications in current rating, voltage ratings (both AC and DC), fuse class, response time, physical dimensions, and breaking capacity. The CCMR04.5TXP qualifies as a direct substitute because it matches all critical parameters: 4.5A current rating, 600 VAC / 250 VDC voltage ratings, CC class designation, slow-blow response, 5AG package format with 10mm x 38mm dimensions, and identical breaking capacity ratings. The primary distinction between these parts is product status and packaging configuration, not functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The CCMR04.5TXP is the direct functional equivalent for CCMR04.5T replacement. Both parts are manufactured by Littelfuse Inc. and carry identical electrical and mechanical specifications. The CCMR04.5TXP maintains active product status, ensuring continued availability and supply chain reliability. Both parts satisfy CE, CSA, and UL compliance requirements and are ROHS3 compliant. Selection between these parts should be based on packaging requirements: the CCMR04.5T uses standard packaging while the CCMR04.5TXP is supplied in bulk configuration. For new designs or system upgrades, the CCMR04.5TXP is the preferred choice due to its active status and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can CCMR04.5TXP be used as a direct replacement for CCMR04.5T? A: Yes. Both parts are electrically and mechanically identical, with matching current ratings, voltage ratings, fuse class, response time, physical dimensions, and breaking capacity. The only differences are product status and packaging format.

Q: What determines if a fuse can substitute for the CCMR04.5T? A: A substitute fuse must match all of the following parameters: 4.5A current rating, 600 VAC and 250 VDC voltage ratings, CC class designation, slow-blow response time, 5AG package format with 10mm x 38mm dimensions, and 300kA AC / 20kA DC breaking capacity.

Q: Are there compliance or certification differences between these parts? A: No. Both CCMR04.5T and CCMR04.5TXP carry identical CE, CSA, and UL approvals and are ROHS3 compliant.

Q: What is the significance of the packaging difference? A: The CCMR04.5T is supplied in standard packaging, while CCMR04.5TXP is supplied in bulk packaging. This affects order quantities and handling but does not impact electrical or mechanical performance.

Q: Why is the CCMR04.5T listed as obsolete? A: Obsolete status indicates the part is no longer in active production. The CCMR04.5TXP, with identical specifications and active status, is the recommended alternative for ongoing applications.