ATDR4 Equivalent & Substitute Parts Reference

Part Overview

The ATDR4 is a CC TD fuse rated for 600V at 4A, manufactured by Mersen USA Newburyport-MA L.L.C. This fuse is designed for circuit protection applications requiring time-delay characteristics at 600V AC. The part is currently active in production with 901 units in stock. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, support design flexibility across manufacturing facilities, and provide alternative sourcing options when the primary part becomes unavailable.

Substiute Parts

ATDR4

Mersen USA Newburyport-MA L.L.C.In Stock: 921ATDR4 Datasheet

Current PartRFQ

LP-CC-4

Eaton - Bussmann Electrical DivisionIn Stock: 1088LP-CC-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The LP-CC-4 manufactured by Eaton - Bussmann Electrical Division qualifies as a functional equivalent to the ATDR4 based on the following critical parameters:

• Current Rating: Both parts are rated for 4A
• Voltage Rating (AC): Both parts are rated for 600 VAC
• Fuse Class: Both parts are Class CC cartridge fuses
• Response Time: Both parts feature slow-blow (time-delay) characteristics
• Mechanical Form Factor: Both are cartridge-style fuses requiring a holder

The LP-CC-4 provides equivalent circuit protection performance within the same electrical specifications and mechanical envelope class.

Parameter Comparison

Engineering Selection Recommendations

Both the ATDR4 and LP-CC-4 are active production parts suitable for 600V, 4A circuit protection applications. The LP-CC-4 offers additional compliance advantages with ROHS3 certification and multiple approval agencies (CE, CSA, UR), whereas the ATDR4 is RoHS non-compliant. Selection between these parts should be based on regulatory requirements for the end application and compliance mandates of the target market. Both parts maintain equivalent electrical performance at the specified ratings.

Frequently Asked Questions (FAQ)

Q: Can the LP-CC-4 directly replace the ATDR4 in existing designs?

A: The LP-CC-4 is electrically equivalent at 4A, 600 VAC and shares the same CC cartridge fuse class with time-delay characteristics. Both parts require a fuse holder for installation. Mechanical compatibility depends on the holder design; verify that the 10mm x 38mm (Midget) form factor of the LP-CC-4 matches the holder specification in your application.

Q: What is the primary difference between these two parts?

A: The primary differences are manufacturer origin and compliance status. The LP-CC-4 is ROHS3 compliant with CE, CSA, and UR approvals, while the ATDR4 is RoHS non-compliant. Both provide identical electrical protection at 4A, 600 VAC with slow-blow response.

Q: Does the LP-CC-4 offer DC voltage protection?

A: Yes. The LP-CC-4 is rated for 150 VDC in addition to 600 VAC. The ATDR4 DC rating is not specified in available documentation. If DC protection is required, the LP-CC-4 provides this capability.

Q: Are there inventory considerations for substitution?

A: The ATDR4 has 901 units in stock, while the LP-CC-4 has 978 units in stock. Both parts are currently available for procurement.

Q: What is the breaking capacity of these fuses?

A: The LP-CC-4 has a breaking capacity of 200kA AC and 20kA DC at rated voltage. The ATDR4 breaking capacity is not specified in available documentation.