Equivalent & Substitute Parts for 2540021

Part Overview

The 2540021 is a cartridge fuse holder manufactured by American Electrical Inc., designed for DIN rail mounting applications. This component is rated for 30 A at 600V and accommodates 10mm x 38mm cartridge fuses in a single-circuit configuration. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

Substiute Parts

2540021

American Electrical Inc.In Stock: 11322540021 Datasheet

Current PartRFQ

E2540011

American Electrical Inc.In Stock: 936E2540011 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2540021 is determined by the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating: 600V (exact match required)
• Fuse Size: 10mm x 38mm (exact match required)
• Mounting Type: DIN Rail (exact match required)
• Number of Circuits: 1 (exact match required)
• Fuse Type: Cartridge (exact match required)

The substitute part E2540011 meets all mandatory electrical and mechanical compatibility criteria. Both parts accommodate identical fuse dimensions, operate at the same voltage and current ratings, and utilize the same DIN rail mounting interface. The E2540011 represents an active product with enhanced functionality while maintaining full backward compatibility with the 2540021 installation footprint.

Parameter Comparison

Engineering Selection Recommendations

The E2540011 is the qualified substitute for the obsolete 2540021. Both components maintain identical electrical ratings (30 A, 600V) and mechanical compatibility (DIN rail mounting, single-circuit cartridge fuse holder). The E2540011 is an active product with current manufacturing support and full ROHS3 compliance certification, providing supply chain continuity for replacement applications.

The minor fuse size variation (10.3mm versus 10mm diameter) remains within standard cartridge fuse tolerance specifications and does not affect functional compatibility. The E2540011 includes LED indicator functionality and box lug termination, representing a direct functional upgrade while maintaining complete backward compatibility with existing 2540021 installations.

Frequently Asked Questions (FAQ)

Q: Can the E2540011 directly replace the 2540021 in existing installations?

A: Yes. Both components share identical electrical ratings (30 A, 600V), mounting interface (DIN rail), and fuse accommodation (10mm x 38mm cartridge). The E2540011 is mechanically and electrically compatible with all 2540021 applications.

Q: What is the significance of the fuse size difference (10mm versus 10.3mm)?

A: The 0.3mm diameter variation falls within standard cartridge fuse manufacturing tolerances and does not affect compatibility. Both dimensions accommodate the same 10mm x 38mm fuse specification.

Q: Why is the 2540021 listed as obsolete?

A: The 2540021 has been superseded by the E2540011, which offers enhanced functionality including LED indication while maintaining full electrical and mechanical compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the 2540021 and E2540011 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in termination style between these parts?

A: The 2540021 termination style is not specified in available documentation. The E2540011 features box lug termination, providing defined connection methodology for DIN rail circuit integration.