CCMR025.T Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The CCMR025.T is a 25A cartridge fuse manufactured by Littelfuse Inc., rated for 600 VAC and 500 VDC operation. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system maintenance and component procurement. The fuse is designed for motor protection applications and requires a compatible holder for installation. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure proper circuit protection without system redesign.

Substiute Parts

CCMR025.T

Littelfuse Inc.In Stock: 1338CCMR025.T Datasheet

Current PartRFQ

CCMR025.TXP

Littelfuse Inc.In Stock: 1005CCMR025.TXP Datasheet

DirectRFQ

LP-CC-25

Eaton - Bussmann Electrical DivisionIn Stock: 791LP-CC-25 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CCMR025.T is determined by the following critical parameters:

• Current Rating: Must be 25A
• Voltage Rating - AC: Must be 600 VAC minimum
• Voltage Rating - DC: Must be 500 VDC or higher
• Fuse Class: Must be CC class
• Response Time: Must be Slow Blow
• Package / Case: Must be 5AG, 10mm x 38mm (Midget)
• Breaking Capacity: Must meet or exceed 200kA AC and 20kA DC

Two substitute parts meet these criteria:

Direct Substitute (Littelfuse): CCMR025.TXP - Identical electrical and mechanical specifications with active product status and bulk packaging availability.

Cross-Manufacturer Substitute (Eaton): LP-CC-25 - Matches all critical parameters with the exception of DC voltage rating (300 VDC versus 500 VDC). This part is suitable only for applications where the DC voltage requirement does not exceed 300 VDC.

Parameter Comparison

Engineering Selection Recommendations

CCMR025.TXP is the primary substitute for CCMR025.T. Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications, mechanical dimensions, and performance characteristics. The CCMR025.TXP maintains active product status, ensuring long-term availability and supply chain continuity. This part is the direct replacement with no operational limitations.

LP-CC-25 is a secondary substitute suitable only for applications where the DC voltage requirement does not exceed 300 VDC. While this Eaton part maintains identical AC voltage rating, current rating, fuse class, and breaking capacity, the reduced DC voltage rating (300 VDC versus 500 VDC) restricts its use to lower-voltage DC circuits. The LP-CC-25 carries broader regulatory approvals (CE, CSA, UR) compared to the CCMR025.T (CE, UL), which may be advantageous in certain jurisdictions. Dimensional tolerance differences (0.394" Dia x 1.496" L versus 0.406" Dia x 1.500" L) are within standard 5AG midget cartridge specifications and do not affect holder compatibility.

Frequently Asked Questions (FAQ)

Q: Can CCMR025.TXP be used as a direct replacement for CCMR025.T?

A: Yes. CCMR025.TXP is a direct substitute with identical electrical ratings (25A, 600 VAC, 500 VDC), fuse class (CC), response time (Slow Blow), and mechanical specifications (5AG, 10mm x 38mm). Both parts are compatible with the same holder and provide equivalent circuit protection.

Q: What is the key difference between CCMR025.T and LP-CC-25?

A: The primary difference is the DC voltage rating. CCMR025.T is rated for 500 VDC, while LP-CC-25 is rated for 300 VDC. Both maintain 600 VAC rating and 25A current rating. LP-CC-25 is suitable only for applications where DC voltage does not exceed 300 VDC.

Q: Are there mechanical compatibility issues with LP-CC-25?

A: LP-CC-25 has minor dimensional differences (0.394" Dia x 1.496" L versus 0.406" Dia x 1.500" L for CCMR025.T). Both are classified as 5AG midget cartridges and are mechanically compatible with standard 5AG holders. These tolerance variations are within normal manufacturing specifications for this fuse class.

Q: Why is CCMR025.T listed as obsolete?

A: CCMR025.T has been discontinued by Littelfuse Inc. CCMR025.TXP is the active replacement part with identical specifications, ensuring continued availability for motor protection applications.

Q: Which regulatory approvals apply to each part?

A: CCMR025.T and CCMR025.TXP carry CE and UL approvals. LP-CC-25 carries CE, CSA, and UR approvals. Selection should consider regional regulatory requirements for the intended application.

Q: Are all three parts RoHS compliant?

A: Yes. CCMR025.T, CCMR025.TXP, and LP-CC-25 are all ROHS3 compliant.